C++ (Cpp) ofRectangle::isZero Examples

Example #1

File: ofxMapamok.cpp Project: fieldOfView/ProCamToolkit

ofVec3f ofxMapamok::worldToScreen(ofVec3f WorldXYZ, ofRectangle viewport) {
	if (!calibrationReady) {
		return WorldXYZ;
	}

	if (viewport.isZero()) {
		viewport = ofGetCurrentViewport();
	}

	begin();
	ofMatrix4x4 modelViewMatrix = ofGetCurrentMatrix(OF_MATRIX_MODELVIEW);
	ofMatrix4x4 projectionMatrix = ofGetCurrentMatrix(OF_MATRIX_PROJECTION);
	end();

	ofVec3f CameraXYZ = WorldXYZ * modelViewMatrix * projectionMatrix;
	ofVec3f ScreenXYZ;

	ScreenXYZ.x = (CameraXYZ.x + 1.0f) / 2.0f * viewport.width + viewport.x;
	ScreenXYZ.y = (1.0f - CameraXYZ.y) / 2.0f * viewport.height + viewport.y;

	ScreenXYZ.z = CameraXYZ.z;

	return ScreenXYZ;
}