##-
# Author: Brian Tiffin
# Dedicated to the public domain
#
# Date: October, 2016
# Modified: 2016-12-18/21:01-0500
##+
#
# IdentityMatrix.icn, demonstrate matrix transforms
# Curerntly a work in progress
#
link fullimag
procedure main()
    window := open("IdentityMatrix", "gl", "bg=black", "buffer=on",
                    "size=400,260", "dim=3")#, "canvas=hidden")
    WAttrib(window,"light0=on, ambient blue-green","fg=specular white")

    # A torus 
    DrawTorus(window, 0.0,0.19,-2.2, 0.3,0.4)
    Refresh(window)
    MatrixMode(window, "projection")
    PushMatrix(window)
    
    write(image(IdentityMatrix(window)))
    write(fullimage(PopMatrix(window)))
    
    # save image for the document
    Refresh(window)
    WSync(window)
    WriteImage(window, "../images/IdentityMatrix.png")
    close(window)
end