Study of perspective drawing and projective geometry
 PDF Files
 Any quadrangle can be a square
I found any quadrangle can be the projection of a square,
if view point is selected properly.
 Visio Ellipse is Cool
 Cross Ratio
 Using Cross Ratio
 Calculating t to draw projected circle
 Study of Visio Projective Geometry
 Shapes for Perspective View Drawing
 Center Projection from Horizontal Plane to Screen
 Geometry Tools
How to use the shapes for Geometry Tools in Visio
 Visio Drawings
 Any Quadrangle is square
This drawing has Visio intelligence.
You can analyse how they change, when you change the quadrangle 1.
 Visio Ellipse is Cool
 Cross Ratio
 Using Cross Ratio
 Calculating t to draw projected circle on screen.
 Center Projection from Horizontal Plane to Screen
 Projection of Square and Circle
 Study of Visio Projective Geometry
 More Than Perspective Drawing Diamond
If you rotate the shape of plan view, 3dlike perspective football will
turns..
 Visio Shapes for perspective Drawing
 Visio Stencils for Perspective
 Geometry Tools
 Shapes for 1Point Perspective
 Shapes for 1Point Perspective
 Shapes for 3Point Perspective
 Advanced Shapes for 2Point Perspective
 Shapes for Vanishing Points
 JAVA Applet made with Cinderella
I found any quadrangle can be the projection of a square, if view point
is selected properly.
You can change the shape of quadrangle, and you can see where is the view
point,
Junichi Yoda
2011/10/31
Revised 2011/11/23
(C) Copyright 2011 All Right Reserved
