Function setMatricesWindowPersp

src/cinder/gl/wrapper.cpp:577–589

}

void setMatricesWindowPersp( int screenWidth, int screenHeight, float fovDegrees, float nearPlane, float farPlane, bool originUpperLeft )
{
	auto ctx = gl::context();

	CameraPersp cam( screenWidth, screenHeight, fovDegrees, nearPlane, farPlane );
	ctx->getModelMatrixStack().back() = mat4();
	ctx->getProjectionMatrixStack().back() = cam.getProjectionMatrix();
	ctx->getViewMatrixStack().back() = cam.getViewMatrix();
	if( originUpperLeft ) {
		ctx->getViewMatrixStack().back() *= glm::scale( vec3( 1, -1, 1 ) );								// invert Y axis so increasing Y goes down.
		ctx->getViewMatrixStack().back() *= glm::translate( vec3( 0, (float) - screenHeight, 0 ) );		// shift origin up to upper-left corner.
	}
}

void setMatricesWindowPersp( const ci::ivec2& screenSize, float fovDegrees, float nearPlane, float farPlane, bool originUpperLeft )
{