mirror of
https://git.dev.opencascade.org/repos/occt.git
synced 2025-04-04 18:06:22 +03:00
7465bfa65e
OpenGl_Context now skips loading functions related to mapping buffer, which are required by OpenGL ES 3.0 specs but not provided by WebGL 2.0. Message_PrinterSystemLog does not use a broken emscripten_log() anymore, which corrupted UNICODE strings. WasmOcctView::initWindow() - callbacks now set using EMSCRIPTEN_EVENT_TARGET_WINDOW instead of 0 used by older Emscripten API. Mouse callbacks now track canvas element and use EmscriptenMouseEvent::targetX/targetY instead of ::canvasX/canvasY as the latter was broken. Added emscripten_set_main_loop() setup to shut up eglSwapInterval() error message. Fixed missing \0 at the end of string converted by toUtf8Array().
81 lines
2.8 KiB
C++
81 lines
2.8 KiB
C++
#include <iostream>
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#include "WasmOcctView.h"
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#include <Message.hxx>
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#include <Message_Messenger.hxx>
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#include <Message_PrinterSystemLog.hxx>
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#include <OSD_MemInfo.hxx>
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#include <OSD_Parallel.hxx>
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#include <AIS_Shape.hxx>
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#include <BRepTools.hxx>
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#include <BRep_Builder.hxx>
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#include <Standard_ArrayStreamBuffer.hxx>
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#include <emscripten.h>
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#include <emscripten/html5.h>
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//! Global viewer instance.
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static WasmOcctView aViewer;
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//! Dummy main loop callback for a single shot.
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extern "C" void onMainLoop()
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{
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// do nothing here - viewer updates are handled on demand
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emscripten_cancel_main_loop();
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}
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//! File data read event.
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extern "C" void onFileDataRead (void* theOpaque, void* theBuffer, int theDataLen)
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{
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const char* aName = theOpaque != NULL ? (const char* )theOpaque : "";
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{
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AIS_ListOfInteractive aShapes;
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aViewer.Context()->DisplayedObjects (AIS_KOI_Shape, -1, aShapes);
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for (AIS_ListOfInteractive::Iterator aShapeIter (aShapes); aShapeIter.More(); aShapeIter.Next())
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{
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aViewer.Context()->Remove (aShapeIter.Value(), false);
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}
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}
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Standard_ArrayStreamBuffer aStreamBuffer ((const char* )theBuffer, theDataLen);
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std::istream aStream (&aStreamBuffer);
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TopoDS_Shape aShape;
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BRep_Builder aBuilder;
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BRepTools::Read (aShape, aStream, aBuilder);
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Handle(AIS_Shape) aShapePrs = new AIS_Shape (aShape);
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aShapePrs->SetMaterial (Graphic3d_NOM_SILVER);
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aViewer.Context()->Display (aShapePrs, AIS_Shaded, 0, false);
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aViewer.View()->FitAll (0.01, false);
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aViewer.View()->Redraw();
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Message::DefaultMessenger()->Send (TCollection_AsciiString("Loaded file ") + aName, Message_Info);
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Message::DefaultMessenger()->Send (OSD_MemInfo::PrintInfo(), Message_Trace);
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}
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//! File read error event.
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static void onFileReadFailed (void* theOpaque)
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{
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const char* aName = (const char* )theOpaque;
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Message::DefaultMessenger()->Send (TCollection_AsciiString("Error: unable to load file ") + aName, Message_Fail);
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}
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int main()
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{
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Message::DefaultMessenger()->Printers().First()->SetTraceLevel (Message_Trace);
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Handle(Message_PrinterSystemLog) aJSConsolePrinter = new Message_PrinterSystemLog ("webgl-sample", Message_Trace);
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Message::DefaultMessenger()->AddPrinter (aJSConsolePrinter); // open JavaScript console within the Browser to see this output
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Message::DefaultMessenger()->Send (TCollection_AsciiString("NbLogicalProcessors: ") + OSD_Parallel::NbLogicalProcessors(), Message_Trace);
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// setup a dummy single-shot main loop callback just to shut up a useless Emscripten error message on calling eglSwapInterval()
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emscripten_set_main_loop (onMainLoop, -1, 0);
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aViewer.run();
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Message::DefaultMessenger()->Send (OSD_MemInfo::PrintInfo(), Message_Trace);
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// load some file
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emscripten_async_wget_data ("samples/Ball.brep", (void* )"samples/Ball.brep", onFileDataRead, onFileReadFailed);
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return 0;
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}
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