Method ProjectPoint

Source/Editor/Viewport/EditorViewport.cs:1514–1527

Projects the point from 3D world-space to viewport coordinates. The input world-space location (XYZ in world). The output viewport window coordinates (XY in screen pixels).

(Vector3 worldSpaceLocation, out Float2 viewportSpaceLocation)

        /// <param name="worldSpaceLocation">The input world-space location (XYZ in world).</param>
        /// <param name="viewportSpaceLocation">The output viewport window coordinates (XY in screen pixels).</param>
        public void ProjectPoint(Vector3 worldSpaceLocation, out Float2 viewportSpaceLocation)
        {
            viewportSpaceLocation = Float2.Minimum;
            var viewport = new FlaxEngine.Viewport(0, 0, Width, Height);
            if (viewport.Width < Mathf.Epsilon || viewport.Height < Mathf.Epsilon)
                return;
            Vector3 viewOrigin = Task.View.Origin;
            Float3 position = ViewPosition - viewOrigin;
            CreateProjectionMatrix(out var p);
            CreateViewMatrix(position, out var v);
            Matrix.Multiply(ref v, ref p, out var vp);
            viewport.Project(ref worldSpaceLocation, ref vp, out var projected);
            viewportSpaceLocation = new Float2((float)projected.X, (float)projected.Y);
        }

        /// <summary>
        /// Called when mouse control begins.