Build3D

This page allows you to define 3D objects from cubes / cylinders / pyramids (half cubes). You can have up to 4 shapes, each starts as a cube whose corners are at (+/-1,+/-1,+/-1). You define a series of transformations for that cube.

U,255;S,2,1,2;T,0,1,0 means cube intensity 255, scaled by 2,1,2 then translated by 0,1,0

L,0,128,128;S,1,3,4;R,0,90,0 means cylinder with the RGB values, scaled by 1,3,4 then rotated about Y axis by 90

P,255;S,2,1,2;T,0,1,0 means pyramid intensity 255, scaled by 2,1,2 then translated by 0,1,0

Also X,0,y,z means shear in X; Y,x,0,z means shear in Y; and Z,x,y,0 means shear in Z

Scene shown as wire frame shapes, back faces culling or solid shapes

The eye can be rotated around the scene. You can speed up or slow down.

A crude version of 'Painters' algorithm is used to determine the order in which the cubes are drawn. The furthest away cube is drawn first, etc. but this is not perfect.

The colour is affected by the amount of light which shines on each surface. You can change the position of the light.