Twelve lessons
Twelve pictures. Each one is a matrix acting on a shape.
One box. Many matrices. Every copy is drawn in one pass.
Games, cities, and repeated parts
Spike and squash. Two weights move the same points.
Faces, speech, and product shapes
Same translate, rotate, and scale. Three products. Three pictures.
Robots, bones, and assemblies
w = 1 moves. w = 0 stays. Same translation.
Normals, maps, and physics
The area stays 1. The corner angle changes.
Type, drawings, and scans
A negative determinant flips the shape. Zero flattens it.
Area, mirrors, and warnings
A crease reflects the sheet. The mark flips.
Symmetric parts and folded sheets
A point on the circle. Two folds make one turn.
Cameras, joints, and sensors
A house drops onto a plane. Top, front, and side. det = 0.
Plans, elevations, and drawings
Move the eye. Divide by w. Depth lines meet on the horizon.
Cameras, drawings, and phones
Apply a matrix, then its inverse. The product is the identity.
CAD, cameras, and a teaching cipher
Most arrows turn. The red ones stay on a line and stretch by λ.
Search, data, and structures