3D shapes and Cellophane glasses

Question

How do I generate basic 3D shapes (red and blue) that can be seen as 3D with cellophane 3D glasses, using C# in a desktop app? (Note that this question is not limited to any particular language. If I can get a head start in any language, then that's great. I can always learn from that and eventually know enough to attempt to implement this in my desired language.)

I've seen so many questions about this, but the answers seem very complicated and don't lead me to anywhere in the end. I can't even find any docs or articles about this.

Answer 1

To generate Anaglyph 3D images, you first have to render the scene from two slightly different viewports, one for each eye. The further apart they are, the smaller the scene will look, and the higher the 3D-sense will be.

The easiest method would be to use some existing library to render the images. Using a "camera", position it slightly to the left (and right) of the center of view. Render two images, and get the pixels.

The second step is to combine the two images into an Anaglyph 3D image. One way to do this, is to combine the red channel from one image with the green and blue channels from the other.

(Pseduo-C#:)

Color Combine(Color left, Color right)
{
    return new Color(left.Red, right.Green, right.Blue);
}

Image Combine(Image left, Image right)
{
    Image result = new Image(left.Width, left.Height);
    for (int y = 0; y < left.Height; y++)
    for (int x = 0; x < left.Width; x++)
    {
        result.SetPixel(x, y, Combine(left.GetPixel(x, y), right.GetPixel(x, y)));
    }
}