DisplayGroupRenderer::DisplayGroupRenderer( RenderContextPtr renderContext )
: renderContext_( renderContext )
, displayGroup_( new DisplayGroup( QSize( )))
, displayGroupItem_( 0 )
{
setRenderingOptions( boost::make_shared<Options>( ));
}
void
SliceRenderer::renderSlice(
const soglu::GLViewSetup &aViewSetup,
const soglu::GLTextureImageTyped<3> &aImage,
const SliceConfiguration &aSlice,
const SliceRenderingQuality &aRenderingQuality,
const TRenderingOptions &aRenderingOptions
)
{
soglu::GLSLProgram &shaderProgram = getShaderProgram(aRenderingOptions, aRenderingQuality);
int vertexLocation = shaderProgram.getAttributeLocation("vertex");
auto programBinder = getBinder(shaderProgram);
setViewSetup(shaderProgram, aViewSetup);
setSliceRenderingImageData(shaderProgram, aImage, aRenderingQuality.enableInterpolation);
setRenderingOptions(shaderProgram, aRenderingOptions);
shaderProgram.use([&aImage, &aSlice, vertexLocation]() {
soglu::drawVertexBuffer(
generateVolumeSlice(aImage.getExtents().realMinimum, aImage.getExtents().realMaximum, aSlice.slice, aSlice.plane),
GL_TRIANGLE_FAN,
vertexLocation
);
});
}
/**
* This method initializes the opengl settings. its invoked defaultly by Qt when the widget
* is initialized.
*/
void MantidGLWidget::initializeGL()
{
setCursor(cursorShape); // This is to set the initial window mouse cursor to Hand icon
// Set the relevant OpenGL rendering options
setRenderingOptions();
glViewport(0,0,width(),height());
// Clear the memory buffers
QColor bgColor = currentBackgroundColor();
glClearColor(GLclampf(bgColor.red()/255.0),GLclampf(bgColor.green()/255.0),GLclampf(bgColor.blue()/255.0),1.0);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
}
