mirror of
https://git.dev.opencascade.org/repos/occt.git
synced 2025-04-03 17:56:21 +03:00
5de4b704fe
Fixed multitouch input. Module is now exported with global functions hidden via MODULARIZE as global object OccViewerModule created by createOccViewerModule(). Global Module setup has been moved to occt-webgl-viewer.js. Use EMSCRIPTEN_KEEPALIVE attribute istead of listing C functions via EXTRA_EXPORTED_RUNTIME_METHODS. WasmOcctView now exports static methods as Module functions using EMSCRIPTEN_BINDINGS. Standard_ASSERT_DBGBREAK_() is now defined using emscripten_debugger().
1047 lines
33 KiB
C++
1047 lines
33 KiB
C++
// Copyright (c) 2019 OPEN CASCADE SAS
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//
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// This file is part of the examples of the Open CASCADE Technology software library.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE
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#include "WasmOcctView.h"
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#include "WasmVKeys.h"
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#include "WasmOcctPixMap.h"
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#include <AIS_Shape.hxx>
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#include <AIS_ViewCube.hxx>
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#include <Aspect_Handle.hxx>
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#include <Aspect_DisplayConnection.hxx>
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#include <Aspect_NeutralWindow.hxx>
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#include <Message.hxx>
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#include <Message_Messenger.hxx>
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#include <Graphic3d_CubeMapPacked.hxx>
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#include <OpenGl_GraphicDriver.hxx>
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#include <Prs3d_DatumAspect.hxx>
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#include <Prs3d_ToolCylinder.hxx>
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#include <Prs3d_ToolDisk.hxx>
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#include <BRep_Builder.hxx>
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#include <BRepBndLib.hxx>
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#include <BRepTools.hxx>
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#include <Standard_ArrayStreamBuffer.hxx>
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#include <emscripten/bind.h>
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#include <iostream>
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#define THE_CANVAS_ID "canvas"
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namespace
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{
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EM_JS(int, jsCanvasGetWidth, (), {
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return Module.canvas.width;
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});
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EM_JS(int, jsCanvasGetHeight, (), {
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return Module.canvas.height;
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});
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EM_JS(float, jsDevicePixelRatio, (), {
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var aDevicePixelRatio = window.devicePixelRatio || 1;
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return aDevicePixelRatio;
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});
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//! Return cavas size in pixels.
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static Graphic3d_Vec2i jsCanvasSize()
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{
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return Graphic3d_Vec2i (jsCanvasGetWidth(), jsCanvasGetHeight());
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}
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//! Auxiliary wrapper for loading model.
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struct ModelAsyncLoader
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{
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std::string Name;
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std::string Path;
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ModelAsyncLoader (const char* theName, const char* thePath)
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: Name (theName), Path (thePath) {}
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//! File data read event.
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static void onDataRead (void* theOpaque, void* theBuffer, int theDataLen)
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{
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const ModelAsyncLoader* aTask = (ModelAsyncLoader* )theOpaque;
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WasmOcctView::openFromMemory (aTask->Name, reinterpret_cast<uintptr_t>(theBuffer), theDataLen, false);
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delete aTask;
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}
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//! File read error event.
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static void onReadFailed (void* theOpaque)
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{
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const ModelAsyncLoader* aTask = (ModelAsyncLoader* )theOpaque;
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Message::DefaultMessenger()->Send (TCollection_AsciiString("Error: unable to load file ") + aTask->Path.c_str(), Message_Fail);
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delete aTask;
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}
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};
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//! Auxiliary wrapper for loading cubemap.
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struct CubemapAsyncLoader
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{
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//! Image file read event.
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static void onImageRead (const char* theFilePath)
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{
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Handle(Graphic3d_CubeMapPacked) aCubemap;
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Handle(WasmOcctPixMap) anImage = new WasmOcctPixMap();
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if (anImage->Init (theFilePath))
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{
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aCubemap = new Graphic3d_CubeMapPacked (anImage);
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}
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WasmOcctView::Instance().View()->SetBackgroundCubeMap (aCubemap, true, false);
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WasmOcctView::Instance().UpdateView();
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}
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//! Image file failed read event.
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static void onImageFailed (const char* theFilePath)
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{
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Message::DefaultMessenger()->Send (TCollection_AsciiString("Error: unable to load image ") + theFilePath, Message_Fail);
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}
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};
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}
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// ================================================================
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// Function : Instance
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// Purpose :
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// ================================================================
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WasmOcctView& WasmOcctView::Instance()
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{
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static WasmOcctView aViewer;
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return aViewer;
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}
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// ================================================================
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// Function : WasmOcctView
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// Purpose :
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// ================================================================
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WasmOcctView::WasmOcctView()
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: myDevicePixelRatio (1.0f),
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myUpdateRequests (0)
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{
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}
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// ================================================================
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// Function : ~WasmOcctView
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// Purpose :
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// ================================================================
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WasmOcctView::~WasmOcctView()
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{
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}
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// ================================================================
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// Function : run
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// Purpose :
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// ================================================================
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void WasmOcctView::run()
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{
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initWindow();
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initViewer();
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initDemoScene();
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if (myView.IsNull())
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{
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return;
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}
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myView->MustBeResized();
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myView->Redraw();
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// There is no infinite message loop, main() will return from here immediately.
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// Tell that our Module should be left loaded and handle events through callbacks.
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//emscripten_set_main_loop (redrawView, 60, 1);
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//emscripten_set_main_loop (redrawView, -1, 1);
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EM_ASM(Module['noExitRuntime'] = true);
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}
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// ================================================================
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// Function : initWindow
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// Purpose :
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// ================================================================
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void WasmOcctView::initWindow()
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{
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myDevicePixelRatio = jsDevicePixelRatio();
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myCanvasId = THE_CANVAS_ID;
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const char* aTargetId = !myCanvasId.IsEmpty() ? myCanvasId.ToCString() : EMSCRIPTEN_EVENT_TARGET_WINDOW;
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const EM_BOOL toUseCapture = EM_TRUE;
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emscripten_set_resize_callback (EMSCRIPTEN_EVENT_TARGET_WINDOW, this, toUseCapture, onResizeCallback);
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emscripten_set_mousedown_callback (aTargetId, this, toUseCapture, onMouseCallback);
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emscripten_set_mouseup_callback (aTargetId, this, toUseCapture, onMouseCallback);
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emscripten_set_mousemove_callback (aTargetId, this, toUseCapture, onMouseCallback);
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emscripten_set_dblclick_callback (aTargetId, this, toUseCapture, onMouseCallback);
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emscripten_set_click_callback (aTargetId, this, toUseCapture, onMouseCallback);
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emscripten_set_mouseenter_callback (aTargetId, this, toUseCapture, onMouseCallback);
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emscripten_set_mouseleave_callback (aTargetId, this, toUseCapture, onMouseCallback);
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emscripten_set_wheel_callback (aTargetId, this, toUseCapture, onWheelCallback);
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emscripten_set_touchstart_callback (aTargetId, this, toUseCapture, onTouchCallback);
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emscripten_set_touchend_callback (aTargetId, this, toUseCapture, onTouchCallback);
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emscripten_set_touchmove_callback (aTargetId, this, toUseCapture, onTouchCallback);
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emscripten_set_touchcancel_callback(aTargetId, this, toUseCapture, onTouchCallback);
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//emscripten_set_keypress_callback (EMSCRIPTEN_EVENT_TARGET_WINDOW, this, toUseCapture, onKeyCallback);
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emscripten_set_keydown_callback (EMSCRIPTEN_EVENT_TARGET_WINDOW, this, toUseCapture, onKeyDownCallback);
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emscripten_set_keyup_callback (EMSCRIPTEN_EVENT_TARGET_WINDOW, this, toUseCapture, onKeyUpCallback);
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}
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// ================================================================
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// Function : dumpGlInfo
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// Purpose :
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// ================================================================
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void WasmOcctView::dumpGlInfo (bool theIsBasic)
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{
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TColStd_IndexedDataMapOfStringString aGlCapsDict;
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myView->DiagnosticInformation (aGlCapsDict, theIsBasic ? Graphic3d_DiagnosticInfo_Basic : Graphic3d_DiagnosticInfo_Complete);
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if (theIsBasic)
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{
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TCollection_AsciiString aViewport;
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aGlCapsDict.FindFromKey ("Viewport", aViewport);
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aGlCapsDict.Clear();
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aGlCapsDict.Add ("Viewport", aViewport);
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}
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aGlCapsDict.Add ("Display scale", TCollection_AsciiString(myDevicePixelRatio));
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// beautify output
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{
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TCollection_AsciiString* aGlVer = aGlCapsDict.ChangeSeek ("GLversion");
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TCollection_AsciiString* aGlslVer = aGlCapsDict.ChangeSeek ("GLSLversion");
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if (aGlVer != NULL
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&& aGlslVer != NULL)
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{
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*aGlVer = *aGlVer + " [GLSL: " + *aGlslVer + "]";
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aGlslVer->Clear();
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}
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}
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TCollection_AsciiString anInfo;
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for (TColStd_IndexedDataMapOfStringString::Iterator aValueIter (aGlCapsDict); aValueIter.More(); aValueIter.Next())
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{
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if (!aValueIter.Value().IsEmpty())
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{
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if (!anInfo.IsEmpty())
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{
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anInfo += "\n";
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}
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anInfo += aValueIter.Key() + ": " + aValueIter.Value();
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}
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}
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::Message::DefaultMessenger()->Send (anInfo, Message_Warning);
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}
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// ================================================================
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// Function : initPixelScaleRatio
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// Purpose :
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// ================================================================
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void WasmOcctView::initPixelScaleRatio()
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{
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SetTouchToleranceScale (myDevicePixelRatio);
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if (!myView.IsNull())
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{
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myView->ChangeRenderingParams().Resolution = (unsigned int )(96.0 * myDevicePixelRatio + 0.5);
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}
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if (!myContext.IsNull())
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{
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myContext->SetPixelTolerance (int(myDevicePixelRatio * 6.0));
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if (!myViewCube.IsNull())
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{
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static const double THE_CUBE_SIZE = 60.0;
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myViewCube->SetSize (myDevicePixelRatio * THE_CUBE_SIZE, false);
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myViewCube->SetBoxFacetExtension (myViewCube->Size() * 0.15);
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myViewCube->SetAxesPadding (myViewCube->Size() * 0.10);
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myViewCube->SetFontHeight (THE_CUBE_SIZE * 0.16);
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if (myViewCube->HasInteractiveContext())
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{
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myContext->Redisplay (myViewCube, false);
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}
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}
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}
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}
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// ================================================================
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// Function : initViewer
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// Purpose :
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// ================================================================
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bool WasmOcctView::initViewer()
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{
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// Build with "--preload-file MyFontFile.ttf" option
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// and register font in Font Manager to use custom font(s).
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/*const char* aFontPath = "MyFontFile.ttf";
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if (Handle(Font_SystemFont) aFont = Font_FontMgr::GetInstance()->CheckFont (aFontPath))
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{
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Font_FontMgr::GetInstance()->RegisterFont (aFont, true);
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}
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else
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{
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Message::DefaultMessenger()->Send (TCollection_AsciiString ("Error: font '") + aFontPath + "' is not found", Message_Fail);
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}*/
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Handle(Aspect_DisplayConnection) aDisp;
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Handle(OpenGl_GraphicDriver) aDriver = new OpenGl_GraphicDriver (aDisp, false);
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aDriver->ChangeOptions().buffersNoSwap = true; // swap has no effect in WebGL
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aDriver->ChangeOptions().buffersOpaqueAlpha = true; // avoid unexpected blending of canvas with page background
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if (!aDriver->InitContext())
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{
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Message::DefaultMessenger()->Send (TCollection_AsciiString ("Error: EGL initialization failed"), Message_Fail);
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return false;
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}
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Handle(V3d_Viewer) aViewer = new V3d_Viewer (aDriver);
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aViewer->SetComputedMode (false);
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aViewer->SetDefaultShadingModel (Graphic3d_TOSM_FRAGMENT);
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aViewer->SetDefaultLights();
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aViewer->SetLightOn();
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for (V3d_ListOfLight::Iterator aLightIter (aViewer->ActiveLights()); aLightIter.More(); aLightIter.Next())
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{
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const Handle(V3d_Light)& aLight = aLightIter.Value();
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if (aLight->Type() == Graphic3d_TOLS_DIRECTIONAL)
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{
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aLight->SetCastShadows (true);
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}
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}
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Handle(Aspect_NeutralWindow) aWindow = new Aspect_NeutralWindow();
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Graphic3d_Vec2i aWinSize = jsCanvasSize();
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if (aWinSize.x() < 10 || aWinSize.y() < 10)
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{
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Message::DefaultMessenger()->Send (TCollection_AsciiString ("Warning: invalid canvas size"), Message_Warning);
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}
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aWindow->SetSize (aWinSize.x(), aWinSize.y());
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myTextStyle = new Prs3d_TextAspect();
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myTextStyle->SetFont (Font_NOF_ASCII_MONO);
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myTextStyle->SetHeight (12);
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myTextStyle->Aspect()->SetColor (Quantity_NOC_GRAY95);
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myTextStyle->Aspect()->SetColorSubTitle (Quantity_NOC_BLACK);
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myTextStyle->Aspect()->SetDisplayType (Aspect_TODT_SHADOW);
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myTextStyle->Aspect()->SetTextFontAspect (Font_FA_Bold);
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myTextStyle->Aspect()->SetTextZoomable (false);
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myTextStyle->SetHorizontalJustification (Graphic3d_HTA_LEFT);
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myTextStyle->SetVerticalJustification (Graphic3d_VTA_BOTTOM);
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myView = new V3d_View (aViewer);
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myView->Camera()->SetProjectionType (Graphic3d_Camera::Projection_Perspective);
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myView->SetImmediateUpdate (false);
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myView->ChangeRenderingParams().IsShadowEnabled = false;
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myView->ChangeRenderingParams().Resolution = (unsigned int )(96.0 * myDevicePixelRatio + 0.5);
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myView->ChangeRenderingParams().ToShowStats = true;
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myView->ChangeRenderingParams().StatsTextAspect = myTextStyle->Aspect();
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myView->ChangeRenderingParams().StatsTextHeight = (int )myTextStyle->Height();
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myView->SetWindow (aWindow);
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dumpGlInfo (false);
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myContext = new AIS_InteractiveContext (aViewer);
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initPixelScaleRatio();
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return true;
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}
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// ================================================================
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// Function : initDemoScene
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// Purpose :
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// ================================================================
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void WasmOcctView::initDemoScene()
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{
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if (myContext.IsNull())
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{
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return;
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}
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//myView->TriedronDisplay (Aspect_TOTP_LEFT_LOWER, Quantity_NOC_GOLD, 0.08, V3d_WIREFRAME);
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myViewCube = new AIS_ViewCube();
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// presentation parameters
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initPixelScaleRatio();
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myViewCube->SetTransformPersistence (new Graphic3d_TransformPers (Graphic3d_TMF_TriedronPers, Aspect_TOTP_RIGHT_LOWER, Graphic3d_Vec2i (100, 100)));
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myViewCube->Attributes()->SetDatumAspect (new Prs3d_DatumAspect());
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myViewCube->Attributes()->DatumAspect()->SetTextAspect (myTextStyle);
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// animation parameters
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myViewCube->SetViewAnimation (myViewAnimation);
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myViewCube->SetFixedAnimationLoop (false);
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myViewCube->SetAutoStartAnimation (true);
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myContext->Display (myViewCube, false);
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// Build with "--preload-file MySampleFile.brep" option to load some shapes here.
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}
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// ================================================================
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// Function : UpdateView
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// Purpose :
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// ================================================================
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void WasmOcctView::UpdateView()
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{
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if (!myView.IsNull())
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{
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myView->Invalidate();
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updateView();
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}
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}
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// ================================================================
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// Function : updateView
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// Purpose :
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// ================================================================
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void WasmOcctView::updateView()
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{
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if (!myView.IsNull())
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{
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if (++myUpdateRequests == 1)
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{
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emscripten_async_call (onRedrawView, this, 0);
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}
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}
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}
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// ================================================================
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// Function : redrawView
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// Purpose :
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// ================================================================
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void WasmOcctView::redrawView()
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{
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if (!myView.IsNull())
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{
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FlushViewEvents (myContext, myView, true);
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}
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}
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// ================================================================
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// Function : handleViewRedraw
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// Purpose :
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// ================================================================
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void WasmOcctView::handleViewRedraw (const Handle(AIS_InteractiveContext)& theCtx,
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const Handle(V3d_View)& theView)
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{
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myUpdateRequests = 0;
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AIS_ViewController::handleViewRedraw (theCtx, theView);
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if (myToAskNextFrame)
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{
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// ask more frames
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++myUpdateRequests;
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emscripten_async_call (onRedrawView, this, 0);
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}
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}
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// ================================================================
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// Function : onResizeEvent
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// Purpose :
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// ================================================================
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EM_BOOL WasmOcctView::onResizeEvent (int theEventType, const EmscriptenUiEvent* theEvent)
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{
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(void )theEventType; // EMSCRIPTEN_EVENT_RESIZE or EMSCRIPTEN_EVENT_CANVASRESIZED
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(void )theEvent;
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if (myView.IsNull())
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{
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return EM_FALSE;
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}
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Handle(Aspect_NeutralWindow) aWindow = Handle(Aspect_NeutralWindow)::DownCast (myView->Window());
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Graphic3d_Vec2i aWinSizeOld, aWinSizeNew (jsCanvasSize());
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if (aWinSizeNew.x() < 10 || aWinSizeNew.y() < 10)
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{
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Message::DefaultMessenger()->Send (TCollection_AsciiString ("Warning: invalid canvas size"), Message_Warning);
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}
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aWindow->Size (aWinSizeOld.x(), aWinSizeOld.y());
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const float aPixelRatio = jsDevicePixelRatio();
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if (aWinSizeNew != aWinSizeOld
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|| aPixelRatio != myDevicePixelRatio)
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{
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if (myDevicePixelRatio != aPixelRatio)
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{
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myDevicePixelRatio = aPixelRatio;
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initPixelScaleRatio();
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}
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aWindow->SetSize (aWinSizeNew.x(), aWinSizeNew.y());
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myView->MustBeResized();
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myView->Invalidate();
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myView->Redraw();
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dumpGlInfo (true);
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}
|
|
return EM_TRUE;
|
|
}
|
|
|
|
// ================================================================
|
|
// Function : onMouseEvent
|
|
// Purpose :
|
|
// ================================================================
|
|
EM_BOOL WasmOcctView::onMouseEvent (int theEventType, const EmscriptenMouseEvent* theEvent)
|
|
{
|
|
if (myView.IsNull())
|
|
{
|
|
return EM_FALSE;
|
|
}
|
|
|
|
Graphic3d_Vec2i aWinSize;
|
|
myView->Window()->Size (aWinSize.x(), aWinSize.y());
|
|
const Graphic3d_Vec2i aNewPos = convertPointToBacking (Graphic3d_Vec2i (theEvent->targetX, theEvent->targetY));
|
|
Aspect_VKeyFlags aFlags = 0;
|
|
if (theEvent->ctrlKey == EM_TRUE) { aFlags |= Aspect_VKeyFlags_CTRL; }
|
|
if (theEvent->shiftKey == EM_TRUE) { aFlags |= Aspect_VKeyFlags_SHIFT; }
|
|
if (theEvent->altKey == EM_TRUE) { aFlags |= Aspect_VKeyFlags_ALT; }
|
|
if (theEvent->metaKey == EM_TRUE) { aFlags |= Aspect_VKeyFlags_META; }
|
|
|
|
const bool isEmulated = false;
|
|
const Aspect_VKeyMouse aButtons = WasmVKeys_MouseButtonsFromNative (theEvent->buttons);
|
|
switch (theEventType)
|
|
{
|
|
case EMSCRIPTEN_EVENT_MOUSEMOVE:
|
|
{
|
|
if ((aNewPos.x() < 0 || aNewPos.x() > aWinSize.x()
|
|
|| aNewPos.y() < 0 || aNewPos.y() > aWinSize.y())
|
|
&& PressedMouseButtons() == Aspect_VKeyMouse_NONE)
|
|
{
|
|
return EM_FALSE;
|
|
}
|
|
if (UpdateMousePosition (aNewPos, aButtons, aFlags, isEmulated))
|
|
{
|
|
updateView();
|
|
}
|
|
break;
|
|
}
|
|
case EMSCRIPTEN_EVENT_MOUSEDOWN:
|
|
case EMSCRIPTEN_EVENT_MOUSEUP:
|
|
{
|
|
if (aNewPos.x() < 0 || aNewPos.x() > aWinSize.x()
|
|
|| aNewPos.y() < 0 || aNewPos.y() > aWinSize.y())
|
|
{
|
|
return EM_FALSE;
|
|
}
|
|
if (UpdateMouseButtons (aNewPos, aButtons, aFlags, isEmulated))
|
|
{
|
|
updateView();
|
|
}
|
|
break;
|
|
}
|
|
case EMSCRIPTEN_EVENT_CLICK:
|
|
case EMSCRIPTEN_EVENT_DBLCLICK:
|
|
{
|
|
if (aNewPos.x() < 0 || aNewPos.x() > aWinSize.x()
|
|
|| aNewPos.y() < 0 || aNewPos.y() > aWinSize.y())
|
|
{
|
|
return EM_FALSE;
|
|
}
|
|
break;
|
|
}
|
|
case EMSCRIPTEN_EVENT_MOUSEENTER:
|
|
{
|
|
break;
|
|
}
|
|
case EMSCRIPTEN_EVENT_MOUSELEAVE:
|
|
{
|
|
// there is no SetCapture() support, so that mouse unclick events outside canvas will not arrive,
|
|
// so we have to forget current state...
|
|
if (UpdateMouseButtons (aNewPos, Aspect_VKeyMouse_NONE, aFlags, isEmulated))
|
|
{
|
|
updateView();
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
return EM_TRUE;
|
|
}
|
|
|
|
// ================================================================
|
|
// Function : onWheelEvent
|
|
// Purpose :
|
|
// ================================================================
|
|
EM_BOOL WasmOcctView::onWheelEvent (int theEventType, const EmscriptenWheelEvent* theEvent)
|
|
{
|
|
if (myView.IsNull()
|
|
|| theEventType != EMSCRIPTEN_EVENT_WHEEL)
|
|
{
|
|
return EM_FALSE;
|
|
}
|
|
|
|
Graphic3d_Vec2i aWinSize;
|
|
myView->Window()->Size (aWinSize.x(), aWinSize.y());
|
|
const Graphic3d_Vec2i aNewPos = convertPointToBacking (Graphic3d_Vec2i (theEvent->mouse.targetX, theEvent->mouse.targetY));
|
|
if (aNewPos.x() < 0 || aNewPos.x() > aWinSize.x()
|
|
|| aNewPos.y() < 0 || aNewPos.y() > aWinSize.y())
|
|
{
|
|
return EM_FALSE;
|
|
}
|
|
|
|
double aDelta = 0.0;
|
|
switch (theEvent->deltaMode)
|
|
{
|
|
case DOM_DELTA_PIXEL:
|
|
{
|
|
aDelta = theEvent->deltaY / (5.0 * myDevicePixelRatio);
|
|
break;
|
|
}
|
|
case DOM_DELTA_LINE:
|
|
{
|
|
aDelta = theEvent->deltaY * 8.0;
|
|
break;
|
|
}
|
|
case DOM_DELTA_PAGE:
|
|
{
|
|
aDelta = theEvent->deltaY >= 0.0 ? 24.0 : -24.0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (UpdateZoom (Aspect_ScrollDelta (aNewPos, -aDelta)))
|
|
{
|
|
updateView();
|
|
}
|
|
return EM_TRUE;
|
|
}
|
|
|
|
// ================================================================
|
|
// Function : onTouchEvent
|
|
// Purpose :
|
|
// ================================================================
|
|
EM_BOOL WasmOcctView::onTouchEvent (int theEventType, const EmscriptenTouchEvent* theEvent)
|
|
{
|
|
const double aClickTolerance = 5.0;
|
|
if (myView.IsNull())
|
|
{
|
|
return EM_FALSE;
|
|
}
|
|
|
|
Graphic3d_Vec2i aWinSize;
|
|
myView->Window()->Size (aWinSize.x(), aWinSize.y());
|
|
bool hasUpdates = false;
|
|
for (int aTouchIter = 0; aTouchIter < theEvent->numTouches; ++aTouchIter)
|
|
{
|
|
const EmscriptenTouchPoint& aTouch = theEvent->touches[aTouchIter];
|
|
if (!aTouch.isChanged)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
const Standard_Size aTouchId = (Standard_Size )aTouch.identifier;
|
|
const Graphic3d_Vec2i aNewPos = convertPointToBacking (Graphic3d_Vec2i (aTouch.targetX, aTouch.targetY));
|
|
switch (theEventType)
|
|
{
|
|
case EMSCRIPTEN_EVENT_TOUCHSTART:
|
|
{
|
|
if (aNewPos.x() >= 0 && aNewPos.x() < aWinSize.x()
|
|
&& aNewPos.y() >= 0 && aNewPos.y() < aWinSize.y())
|
|
{
|
|
hasUpdates = true;
|
|
AddTouchPoint (aTouchId, Graphic3d_Vec2d (aNewPos));
|
|
myClickTouch.From.SetValues (-1.0, -1.0);
|
|
if (myTouchPoints.Extent() == 1)
|
|
{
|
|
myClickTouch.From = Graphic3d_Vec2d (aNewPos);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case EMSCRIPTEN_EVENT_TOUCHMOVE:
|
|
{
|
|
const int anOldIndex = myTouchPoints.FindIndex (aTouchId);
|
|
if (anOldIndex != 0)
|
|
{
|
|
hasUpdates = true;
|
|
UpdateTouchPoint (aTouchId, Graphic3d_Vec2d (aNewPos));
|
|
if (myTouchPoints.Extent() == 1
|
|
&& (myClickTouch.From - Graphic3d_Vec2d (aNewPos)).cwiseAbs().maxComp() > aClickTolerance)
|
|
{
|
|
myClickTouch.From.SetValues (-1.0, -1.0);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
case EMSCRIPTEN_EVENT_TOUCHEND:
|
|
case EMSCRIPTEN_EVENT_TOUCHCANCEL:
|
|
{
|
|
if (RemoveTouchPoint (aTouchId))
|
|
{
|
|
if (myTouchPoints.IsEmpty()
|
|
&& myClickTouch.From.minComp() >= 0.0)
|
|
{
|
|
if (myDoubleTapTimer.IsStarted()
|
|
&& myDoubleTapTimer.ElapsedTime() <= myMouseDoubleClickInt)
|
|
{
|
|
myView->FitAll (0.01, false);
|
|
myView->Invalidate();
|
|
}
|
|
else
|
|
{
|
|
myDoubleTapTimer.Stop();
|
|
myDoubleTapTimer.Reset();
|
|
myDoubleTapTimer.Start();
|
|
SelectInViewer (Graphic3d_Vec2i (myClickTouch.From), false);
|
|
}
|
|
}
|
|
hasUpdates = true;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
if (hasUpdates)
|
|
{
|
|
updateView();
|
|
}
|
|
return hasUpdates || !myTouchPoints.IsEmpty() ? EM_TRUE : EM_FALSE;
|
|
}
|
|
|
|
// ================================================================
|
|
// Function : onKeyDownEvent
|
|
// Purpose :
|
|
// ================================================================
|
|
EM_BOOL WasmOcctView::onKeyDownEvent (int theEventType, const EmscriptenKeyboardEvent* theEvent)
|
|
{
|
|
if (myView.IsNull()
|
|
|| theEventType != EMSCRIPTEN_EVENT_KEYDOWN) // EMSCRIPTEN_EVENT_KEYPRESS
|
|
{
|
|
return EM_FALSE;
|
|
}
|
|
|
|
const double aTimeStamp = EventTime();
|
|
const Aspect_VKey aVKey = WasmVKeys_VirtualKeyFromNative (theEvent->keyCode);
|
|
if (aVKey == Aspect_VKey_UNKNOWN)
|
|
{
|
|
return EM_FALSE;
|
|
}
|
|
|
|
if (theEvent->repeat == EM_FALSE)
|
|
{
|
|
myKeys.KeyDown (aVKey, aTimeStamp);
|
|
}
|
|
|
|
if (Aspect_VKey2Modifier (aVKey) == 0)
|
|
{
|
|
// normal key
|
|
}
|
|
return EM_FALSE;
|
|
}
|
|
|
|
// ================================================================
|
|
// Function : onKeyUpEvent
|
|
// Purpose :
|
|
// ================================================================
|
|
EM_BOOL WasmOcctView::onKeyUpEvent (int theEventType, const EmscriptenKeyboardEvent* theEvent)
|
|
{
|
|
if (myView.IsNull()
|
|
|| theEventType != EMSCRIPTEN_EVENT_KEYUP)
|
|
{
|
|
return EM_FALSE;
|
|
}
|
|
|
|
const double aTimeStamp = EventTime();
|
|
const Aspect_VKey aVKey = WasmVKeys_VirtualKeyFromNative (theEvent->keyCode);
|
|
if (aVKey == Aspect_VKey_UNKNOWN)
|
|
{
|
|
return EM_FALSE;
|
|
}
|
|
|
|
if (theEvent->repeat == EM_TRUE)
|
|
{
|
|
return EM_FALSE;
|
|
}
|
|
|
|
const unsigned int aModif = myKeys.Modifiers();
|
|
myKeys.KeyUp (aVKey, aTimeStamp);
|
|
if (Aspect_VKey2Modifier (aVKey) == 0)
|
|
{
|
|
// normal key released
|
|
switch (aVKey | aModif)
|
|
{
|
|
case Aspect_VKey_F:
|
|
{
|
|
myView->FitAll (0.01, false);
|
|
myView->Invalidate();
|
|
updateView();
|
|
return EM_TRUE;
|
|
}
|
|
}
|
|
}
|
|
return EM_FALSE;
|
|
}
|
|
|
|
// ================================================================
|
|
// Function : setCubemapBackground
|
|
// Purpose :
|
|
// ================================================================
|
|
void WasmOcctView::setCubemapBackground (const std::string& theImagePath)
|
|
{
|
|
if (!theImagePath.empty())
|
|
{
|
|
emscripten_async_wget (theImagePath.c_str(), "/emulated/cubemap.jpg", CubemapAsyncLoader::onImageRead, CubemapAsyncLoader::onImageFailed);
|
|
}
|
|
else
|
|
{
|
|
WasmOcctView::Instance().View()->SetBackgroundCubeMap (Handle(Graphic3d_CubeMapPacked)(), true, false);
|
|
WasmOcctView::Instance().UpdateView();
|
|
}
|
|
}
|
|
|
|
// ================================================================
|
|
// Function : fitAllObjects
|
|
// Purpose :
|
|
// ================================================================
|
|
void WasmOcctView::fitAllObjects (bool theAuto)
|
|
{
|
|
WasmOcctView& aViewer = Instance();
|
|
if (theAuto)
|
|
{
|
|
aViewer.FitAllAuto (aViewer.Context(), aViewer.View());
|
|
}
|
|
else
|
|
{
|
|
aViewer.View()->FitAll (0.01, false);
|
|
}
|
|
aViewer.UpdateView();
|
|
}
|
|
|
|
// ================================================================
|
|
// Function : removeAllObjects
|
|
// Purpose :
|
|
// ================================================================
|
|
void WasmOcctView::removeAllObjects()
|
|
{
|
|
WasmOcctView& aViewer = Instance();
|
|
for (NCollection_IndexedDataMap<TCollection_AsciiString, Handle(AIS_InteractiveObject)>::Iterator anObjIter (aViewer.myObjects);
|
|
anObjIter.More(); anObjIter.Next())
|
|
{
|
|
aViewer.Context()->Remove (anObjIter.Value(), false);
|
|
}
|
|
aViewer.myObjects.Clear();
|
|
aViewer.UpdateView();
|
|
}
|
|
|
|
// ================================================================
|
|
// Function : removeObject
|
|
// Purpose :
|
|
// ================================================================
|
|
bool WasmOcctView::removeObject (const std::string& theName)
|
|
{
|
|
WasmOcctView& aViewer = Instance();
|
|
Handle(AIS_InteractiveObject) anObj;
|
|
if (!theName.empty()
|
|
&& !aViewer.myObjects.FindFromKey (theName.c_str(), anObj))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
aViewer.Context()->Remove (anObj, false);
|
|
aViewer.myObjects.RemoveKey (theName.c_str());
|
|
aViewer.UpdateView();
|
|
return true;
|
|
}
|
|
|
|
// ================================================================
|
|
// Function : eraseObject
|
|
// Purpose :
|
|
// ================================================================
|
|
bool WasmOcctView::eraseObject (const std::string& theName)
|
|
{
|
|
WasmOcctView& aViewer = Instance();
|
|
Handle(AIS_InteractiveObject) anObj;
|
|
if (!theName.empty()
|
|
&& !aViewer.myObjects.FindFromKey (theName.c_str(), anObj))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
aViewer.Context()->Erase (anObj, false);
|
|
aViewer.UpdateView();
|
|
return true;
|
|
}
|
|
|
|
// ================================================================
|
|
// Function : displayObject
|
|
// Purpose :
|
|
// ================================================================
|
|
bool WasmOcctView::displayObject (const std::string& theName)
|
|
{
|
|
WasmOcctView& aViewer = Instance();
|
|
Handle(AIS_InteractiveObject) anObj;
|
|
if (!theName.empty()
|
|
&& !aViewer.myObjects.FindFromKey (theName.c_str(), anObj))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
aViewer.Context()->Display (anObj, false);
|
|
aViewer.UpdateView();
|
|
return true;
|
|
}
|
|
|
|
// ================================================================
|
|
// Function : openFromUrl
|
|
// Purpose :
|
|
// ================================================================
|
|
void WasmOcctView::openFromUrl (const std::string& theName,
|
|
const std::string& theModelPath)
|
|
{
|
|
ModelAsyncLoader* aTask = new ModelAsyncLoader (theName.c_str(), theModelPath.c_str());
|
|
emscripten_async_wget_data (theModelPath.c_str(), (void* )aTask, ModelAsyncLoader::onDataRead, ModelAsyncLoader::onReadFailed);
|
|
}
|
|
|
|
// ================================================================
|
|
// Function : openFromMemory
|
|
// Purpose :
|
|
// ================================================================
|
|
bool WasmOcctView::openFromMemory (const std::string& theName,
|
|
uintptr_t theBuffer, int theDataLen,
|
|
bool theToFree)
|
|
{
|
|
removeObject (theName);
|
|
char* aBytes = reinterpret_cast<char*>(theBuffer);
|
|
if (aBytes == nullptr
|
|
|| theDataLen <= 0)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
// Function to check if specified data stream starts with specified header.
|
|
#define dataStartsWithHeader(theData, theHeader) (::strncmp(theData, theHeader, sizeof(theHeader) - 1) == 0)
|
|
|
|
if (dataStartsWithHeader(aBytes, "DBRep_DrawableShape"))
|
|
{
|
|
return openBRepFromMemory (theName, theBuffer, theDataLen, theToFree);
|
|
}
|
|
else if (dataStartsWithHeader(aBytes, "glTF"))
|
|
{
|
|
//return openGltfFromMemory (theName, theBuffer, theDataLen, theToFree);
|
|
}
|
|
if (theToFree)
|
|
{
|
|
free (aBytes);
|
|
}
|
|
|
|
Message::SendFail() << "Error: file '" << theName.c_str() << "' has unsupported format";
|
|
return false;
|
|
}
|
|
|
|
// ================================================================
|
|
// Function : openBRepFromMemory
|
|
// Purpose :
|
|
// ================================================================
|
|
bool WasmOcctView::openBRepFromMemory (const std::string& theName,
|
|
uintptr_t theBuffer, int theDataLen,
|
|
bool theToFree)
|
|
{
|
|
removeObject (theName);
|
|
|
|
WasmOcctView& aViewer = Instance();
|
|
TopoDS_Shape aShape;
|
|
BRep_Builder aBuilder;
|
|
bool isLoaded = false;
|
|
{
|
|
char* aRawData = reinterpret_cast<char*>(theBuffer);
|
|
Standard_ArrayStreamBuffer aStreamBuffer (aRawData, theDataLen);
|
|
std::istream aStream (&aStreamBuffer);
|
|
BRepTools::Read (aShape, aStream, aBuilder);
|
|
if (theToFree)
|
|
{
|
|
free (aRawData);
|
|
}
|
|
isLoaded = true;
|
|
}
|
|
if (!isLoaded)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
Handle(AIS_Shape) aShapePrs = new AIS_Shape (aShape);
|
|
if (!theName.empty())
|
|
{
|
|
aViewer.myObjects.Add (theName.c_str(), aShapePrs);
|
|
}
|
|
aShapePrs->SetMaterial (Graphic3d_NameOfMaterial_Silver);
|
|
aViewer.Context()->Display (aShapePrs, AIS_Shaded, 0, false);
|
|
aViewer.View()->FitAll (0.01, false);
|
|
aViewer.UpdateView();
|
|
|
|
Message::DefaultMessenger()->Send (TCollection_AsciiString("Loaded file ") + theName.c_str(), Message_Info);
|
|
Message::DefaultMessenger()->Send (OSD_MemInfo::PrintInfo(), Message_Trace);
|
|
return true;
|
|
}
|
|
|
|
// ================================================================
|
|
// Function : displayGround
|
|
// Purpose :
|
|
// ================================================================
|
|
void WasmOcctView::displayGround (bool theToShow)
|
|
{
|
|
static Handle(AIS_Shape) aGroundPrs = new AIS_Shape (TopoDS_Shape());
|
|
|
|
WasmOcctView& aViewer = Instance();
|
|
Bnd_Box aBox;
|
|
if (theToShow)
|
|
{
|
|
aViewer.Context()->Remove (aGroundPrs, false);
|
|
aBox = aViewer.View()->View()->MinMaxValues();
|
|
}
|
|
if (aBox.IsVoid()
|
|
|| aBox.IsZThin (Precision::Confusion()))
|
|
{
|
|
if (!aGroundPrs.IsNull()
|
|
&& aGroundPrs->HasInteractiveContext())
|
|
{
|
|
aViewer.Context()->Remove (aGroundPrs, false);
|
|
aViewer.UpdateView();
|
|
}
|
|
return;
|
|
}
|
|
|
|
const gp_XYZ aSize = aBox.CornerMax().XYZ() - aBox.CornerMin().XYZ();
|
|
const double aRadius = Max (aSize.X(), aSize.Y());
|
|
const double aZValue = aBox.CornerMin().Z() - Min (10.0, aSize.Z() * 0.01);
|
|
const double aZSize = aRadius * 0.01;
|
|
gp_XYZ aGroundCenter ((aBox.CornerMin().X() + aBox.CornerMax().X()) * 0.5,
|
|
(aBox.CornerMin().Y() + aBox.CornerMax().Y()) * 0.5,
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aZValue);
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|
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TopoDS_Compound aGround;
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gp_Trsf aTrsf1, aTrsf2;
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aTrsf1.SetTranslation (gp_Vec (aGroundCenter - gp_XYZ(0.0, 0.0, aZSize)));
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aTrsf2.SetTranslation (gp_Vec (aGroundCenter));
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Prs3d_ToolCylinder aCylTool (aRadius, aRadius, aZSize, 50, 1);
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Prs3d_ToolDisk aDiskTool (0.0, aRadius, 50, 1);
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TopoDS_Face aCylFace, aDiskFace1, aDiskFace2;
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BRep_Builder().MakeFace (aCylFace, aCylTool .CreatePolyTriangulation (aTrsf1));
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BRep_Builder().MakeFace (aDiskFace1, aDiskTool.CreatePolyTriangulation (aTrsf1));
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BRep_Builder().MakeFace (aDiskFace2, aDiskTool.CreatePolyTriangulation (aTrsf2));
|
|
|
|
BRep_Builder().MakeCompound (aGround);
|
|
BRep_Builder().Add (aGround, aCylFace);
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|
BRep_Builder().Add (aGround, aDiskFace1);
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|
BRep_Builder().Add (aGround, aDiskFace2);
|
|
|
|
aGroundPrs->SetShape (aGround);
|
|
aGroundPrs->SetToUpdate();
|
|
aGroundPrs->SetMaterial (Graphic3d_NameOfMaterial_Stone);
|
|
aGroundPrs->SetInfiniteState (false);
|
|
aViewer.Context()->Display (aGroundPrs, AIS_Shaded, -1, false);
|
|
aGroundPrs->SetInfiniteState (true);
|
|
aViewer.UpdateView();
|
|
}
|
|
|
|
// Module exports
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EMSCRIPTEN_BINDINGS(OccViewerModule) {
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emscripten::function("setCubemapBackground", &WasmOcctView::setCubemapBackground);
|
|
emscripten::function("fitAllObjects", &WasmOcctView::fitAllObjects);
|
|
emscripten::function("removeAllObjects", &WasmOcctView::removeAllObjects);
|
|
emscripten::function("removeObject", &WasmOcctView::removeObject);
|
|
emscripten::function("eraseObject", &WasmOcctView::eraseObject);
|
|
emscripten::function("displayObject", &WasmOcctView::displayObject);
|
|
emscripten::function("displayGround", &WasmOcctView::displayGround);
|
|
emscripten::function("openFromUrl", &WasmOcctView::openFromUrl);
|
|
emscripten::function("openFromMemory", &WasmOcctView::openFromMemory, emscripten::allow_raw_pointers());
|
|
emscripten::function("openBRepFromMemory", &WasmOcctView::openBRepFromMemory, emscripten::allow_raw_pointers());
|
|
}
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