Method draw

test/WindowToWorldTest/src/WindowToWorldTestApp.cpp:74–122

}

void WindowToWorldTestApp::draw()
{
	gl::clear();

	// Create a list of (object space) corners, so we can easily draw them.
	vec2 corners[] = { mRectangle.area.getUpperLeft(), mRectangle.area.getUpperRight(),
		mRectangle.area.getLowerRight(), mRectangle.area.getLowerLeft() };

	// Either use setMatricesWindow() or setMatricesWindowPersp() to enable 2D rendering.
	gl::setMatricesWindow( getWindowSize(), false );

	// Draw the transformed rectangle.
	gl::pushModelMatrix();
	gl::multModelMatrix( mRectangle.matrix() );

	// Draw a stroked rect in magenta (if mouse inside) or white (if mouse outside).
	if( mIsOver )
		gl::color( 1, 0, 1 );
	else
		gl::color( 1, 1, 1 );
	gl::drawStrokedRect( mRectangle.area );

	// Draw the same rect as line segments.
	gl::drawLine( corners[0], corners[1] );
	gl::drawLine( corners[1], corners[2] );
	gl::drawLine( corners[2], corners[3] );
	gl::drawLine( corners[3], corners[0] );

	// Draw the 4 corners as yellow crosses.
	for( vec2 &corner : corners ) {
		gl::color( 1, 1, 0 );
		gl::drawLine( vec2( corner.x, corner.y - 5 ), vec2( corner.x, corner.y + 5 ) );
		gl::drawLine( vec2( corner.x - 5, corner.y ), vec2( corner.x + 5, corner.y ) );
	}

	gl::popModelMatrix();

	// To test worldToWindowCoord, let's draw the 4 corners again,
	// this time as red crosses without changing the model matrix. [ Excercising gl::worldToWindowCoord() ].
	for( vec2 &corner : corners ) {
		vec4 world = mRectangle.matrix() * vec4( corner, 0, 1 );
		vec2 window = gl::worldToWindowCoord( vec3( world ) );
		vec2 scale = mRectangle.scale;

		gl::color( 1, 0, 0 );
		gl::drawLine( vec2( window.x, window.y - 5 * scale.y ), vec2( window.x, window.y + 5 * scale.y ) );
		gl::drawLine( vec2( window.x - 5 * scale.x, window.y ), vec2( window.x + 5 * scale.x, window.y ) );
	}
}

void WindowToWorldTestApp::mouseMove( MouseEvent event )
{