public static bool WorldToScreen(Rect clientRect, CameraInfo cameraInfo, Vector3 position, out Point screenCoordinates)
{
Vector3 diff = new Vector3(position) - cameraInfo.Pos;
screenCoordinates = new Point(0, 0);
if ((diff * cameraInfo.ViewMatrix.FirstCol) < Vector3.Zero)
{
return(false);
}
Vector3 view = diff * cameraInfo.ViewMatrix.Inverse();
Vector3 cam = new Vector3(-view.Y, -view.Z, view.X);
float windowWidth = (clientRect.Right - clientRect.Left);
float windowHeight = (clientRect.Bottom - clientRect.Top);
float screenX = windowWidth / 2.0f;
float screenY = windowHeight / 2.0f;
float tmpX = screenX / MathF.Tan((cameraInfo.Fov * 180) * DEG_TO_RAD);
float tmpY = screenY / MathF.Tan((cameraInfo.Fov * 180) * DEG_TO_RAD);
screenCoordinates = new Point
{
X = (int)(screenX + cam.X * tmpX / cam.Z),
Y = (int)(screenY + cam.Y * tmpY / cam.Z)
};
return(screenCoordinates.X > 0 && screenCoordinates.Y > 0 && screenCoordinates.X < windowWidth && screenCoordinates.Y < windowHeight);
}
public static bool WorldToScreen(Rect clientRect, RawCameraInfo cameraInfo, Vector3 position, out Point screenCoordinates)
{
Vector3 diff = position - cameraInfo.Pos;
Vector3 view = diff * cameraInfo.ViewMatrix.Inverse();
float windowWidth = clientRect.Right - clientRect.Left;
float windowHeight = clientRect.Bottom - clientRect.Top;
float screenX = windowWidth / 2.0f;
float screenY = windowHeight / 2.0f;
float screenF = windowWidth / windowHeight;
float tmpX = screenX / MathF.Tan((screenF * (screenF >= 1.6f ? 55.0f : 44.0f) / 2.0f) * DEG_TO_RAD);
float tmpY = screenY / MathF.Tan((screenF * 35.0f / 2.0f) * DEG_TO_RAD);
screenCoordinates = new()
{
X = (int)MathF.Abs(screenX + (-view.Y * tmpX / view.X)),
Y = (int)MathF.Abs(screenY + (-view.Z * tmpY / view.X)) - 20
};
return(screenCoordinates.X > 0 && screenCoordinates.Y > 0 && screenCoordinates.X < windowWidth && screenCoordinates.Y < windowHeight);
}
}
