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occt/samples/webgl
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kgv 5f69cfa70c 0032638: Draw Harness, ViewerTest - HTML input range misbehavior in WebAssembly 
ViewerTest_EventManager - added tracking of EMSCRIPTEN_EVENT_FOCUSOUT event.
onWasmMouseCallback() has been adjusted to return FALSE for EMSCRIPTEN_EVENT_TARGET_WINDOW
target to avoid misbehavior of other HTML controls.

WNT_Window::ProcessMessage() now handles WM_SETFOCUS/WM_KILLFOCUS instead of WM_ACTIVATE to track focus changes.

AIS_ViewController::ProcessFocus() now redirects to AIS_ViewController::ResetViewInput() on focus loss.
This fixes issues when key action (like WASD navigation) keep working even after releasing key if window has been switched.
2021-10-22 19:58:16 +03:00
..
.gitignore
0031070: Configuration - fix building issues when using Emscripten toolchain
2019-10-27 00:43:07 +03:00
CMakeLists.txt
0032629: Configuration, scripts - add USE_PTHREADS building option to wasm_build.bat
2021-10-22 19:58:15 +03:00
main.cpp
0032460: Coding Rules - eliminate CLang warning -Wunused-but-set-variable
2021-06-24 23:47:45 +03:00
occt-webgl-sample.html
0032638: Draw Harness, ViewerTest - HTML input range misbehavior in WebAssembly
2021-10-22 19:58:16 +03:00
occt-webgl-viewer.js
0032315: Configuration, CMake - fix building Draw Harness plugins as static libraries
2021-04-23 18:46:13 +03:00
ReadMe.md
0031070: Configuration - fix building issues when using Emscripten toolchain
2019-10-27 00:43:07 +03:00
WasmOcctView.cpp
0032638: Draw Harness, ViewerTest - HTML input range misbehavior in WebAssembly
2021-10-22 19:58:16 +03:00
WasmOcctView.h
0032638: Draw Harness, ViewerTest - HTML input range misbehavior in WebAssembly
2021-10-22 19:58:16 +03:00

ReadMe.md

OCCT WebGL Viewer sample

This sample demonstrates simple way of using OCCT libraries in Web application written in C++ and translated into WebAssembly module using Emscripten SDK (emsdk): https://emscripten.org/

Sample consists of the Open CASCADE 3D Viewer with a button for opening a model in BREP format. The sample requires a WebGL 2.0 capable browser supporting WebAssembly 1.0 (Wasm).

Installation and configuration:

  1. Install Emscripten SDK and activate minimal configuration (Python, Java and CLang) following emsdk documentation. Activate also MinGW when building sample on Windows host.
  2. Build (using emsdk) or download FreeType static library.
  3. Configure CMake for building Open CASCADE Technology (OCCT) static libraries (BUILD_LIBRARY_TYPE="Static"). For this, activate emsdk command prompt, configure CMake for building OCCT using cross-compilation toolchain, disable BUILD_MODULE_Draw.
  4. Perform building and installation steps.
    > ${EMSDK}/fastcomp/emscripten/cmake/Modules/Platform/Emscripten.cmake
  1. Configure CMake for building this WebGL sample using emsdk with paths to OCCT and FreeType. Perform building and installation steps.
  2. Copy data/occ/Ball.brep from OCCT into "samples" folder within WebGL sample installation path.
  3. Navigate to installation folder and start web server from it; Python coming with emsdk can be used for this purpose:
    > python -m SimpleHTTPServer 8080
  1. Open compatible browser and enter path taking into account your web server settings:
    > http://localhost:8080/occt-webgl-sample.html