void CubeDrawable::draw(const Matrix4& transformationMatrix, SceneGraph::Camera3D& camera) {
_shader.setDiffuseColor(_color)
.setSpecularColor(Color3(1.0f))
.setShininess(20)
.setLightPosition(camera.cameraMatrix().transformPoint({3.0f, 3.0f, 3.0f}))
.setTransformationMatrix(transformationMatrix)
.setNormalMatrix(transformationMatrix.rotationScaling())
.setProjectionMatrix(camera.projectionMatrix());
_mesh.draw(_shader);
}
void BulletExample::drawEvent() {
GL::defaultFramebuffer.clear(GL::FramebufferClear::Color|GL::FramebufferClear::Depth);
/* Housekeeping: remove any objects which are far away from the origin */
for(Object3D* obj = _scene.children().first(); obj; )
{
Object3D* next = obj->nextSibling();
if(obj->transformation().translation().dot() > 100*100)
delete obj;
obj = next;
}
/* Step bullet simulation */
_bWorld.stepSimulation(_timeline.previousFrameDuration(), 5);
/* Draw the cubes */
if(_drawCubes) _camera->draw(_drawables);
/* Debug draw. If drawing on top of cubes, avoid flickering by setting
depth function to <= instead of just <. */
if(_drawDebug) {
if(_drawCubes)
GL::Renderer::setDepthFunction(GL::Renderer::DepthFunction::LessOrEqual);
_debugDraw.setTransformationProjectionMatrix(
_camera->projectionMatrix()*_camera->cameraMatrix());
_bWorld.debugDrawWorld();
if(_drawCubes)
GL::Renderer::setDepthFunction(GL::Renderer::DepthFunction::Less);
}
swapBuffers();
_timeline.nextFrame();
redraw();
}