MStatus viewRenderUserOperation::execute( const MHWRender::MDrawContext & drawContext )
{
// Sample code to debug pass information
static const bool debugPassInformation = false;
if (debugPassInformation)
{
const MHWRender::MPassContext & passCtx = drawContext.getPassContext();
const MString & passId = passCtx.passIdentifier();
const MStringArray & passSem = passCtx.passSemantics();
printf("viewRenderUserOperation: drawing in pass[%s], semantic[", passId.asChar());
for (unsigned int i=0; i<passSem.length(); i++)
printf(" %s", passSem[i].asChar());
printf("\n");
}
// Example code to find the active override.
// This is not necessary if the operations just keep a reference
// to the override, but this demonstrates how this
// contextual information can be extracted.
//
MHWRender::MRenderer *theRenderer = MHWRender::MRenderer::theRenderer();
const MHWRender::MRenderOverride *overridePtr = NULL;
if (theRenderer)
{
const MString & overrideName = theRenderer->activeRenderOverride();
overridePtr = theRenderer->findRenderOverride( overrideName );
}
// Some sample code to debug lighting information in the MDrawContext
//
if (fDebugLightingInfo)
{
viewRenderOverrideUtilities::printDrawContextLightInfo( drawContext );
}
// Some sample code to debug other MDrawContext information
//
if (fDebugDrawContext)
{
MStatus status;
MMatrix matrix = drawContext.getMatrix(MHWRender::MFrameContext::kWorldMtx, &status);
double dest[4][4];
status = matrix.get(dest);
printf("World matrix is:\n");
printf("\t%f, %f, %f, %f\n", dest[0][0], dest[0][1], dest[0][2], dest[0][3]);
printf("\t%f, %f, %f, %f\n", dest[1][0], dest[1][1], dest[1][2], dest[1][3]);
printf("\t%f, %f, %f, %f\n", dest[2][0], dest[2][1], dest[2][2], dest[2][3]);
printf("\t%f, %f, %f, %f\n", dest[3][0], dest[3][1], dest[3][2], dest[3][3]);
MDoubleArray viewDirection = drawContext.getTuple(MHWRender::MFrameContext::kViewDirection, &status);
printf("Viewdirection is: %f, %f, %f\n", viewDirection[0], viewDirection[1], viewDirection[2]);
MBoundingBox box = drawContext.getSceneBox(&status);
printf("Screen box is:\n");
printf("\twidth=%f, height=%f, depth=%f\n", box.width(), box.height(), box.depth());
float center[4];
box.center().get(center);
printf("\tcenter=(%f, %f, %f, %f)\n", center[0], center[1], center[2], center[3]);
int originX, originY, width, height;
status = drawContext.getViewportDimensions(originX, originY, width, height);
printf("Viewport dimension: center(%d, %d), width=%d, heigh=%d\n", originX, originY, width, height);
}
// Draw some addition things for scene draw
//
M3dView mView;
if (mPanelName.length() &&
(M3dView::getM3dViewFromModelPanel(mPanelName, mView) == MStatus::kSuccess))
{
// Get the current viewport and scale it relative to that
//
int targetW, targetH;
drawContext.getRenderTargetSize( targetW, targetH );
if (fDrawLabel)
{
MString testString("Drawing with override: ");
testString += overridePtr->name();
MPoint pos(0.0,0.0,0.0);
glColor3f( 1.0f, 1.0f, 1.0f );
mView.drawText( testString, pos);
}
// Some user drawing of scene bounding boxes
//
if (fDrawBoundingBoxes)
{
MDagPath cameraPath;
mView.getCamera( cameraPath);
MCustomSceneDraw userDraw;
userDraw.draw( cameraPath, targetW, targetH );
}
}
return MStatus::kSuccess;
}
