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3
votes
2answers
851 views

Scaling at an arbitrary point and figuring out the distance from origin

Suppose I have a 8x6 rectangle, with its lower left corner at the origin (0, 0). I want to scale this rectangle by 0.5 at an anchor point (3, 3). So the resulting rectangle is 4x3, but I cannot figure ...
6
votes
2answers
660 views

Rotations by degrees other than 90, 180, and 270

Say I have a triangle with vertices (0,0), (2,4), (4,0) that I want to rotate along the origin. Rotation by multiples of 90 is simple. However, I want to rotate by ...
3
votes
1answer
239 views

Constructing an Extrusion between two non-parallel planes

I am crossposting this question from Stack Overflow since it is more math then programming related. In Reference to my question about projecting a planar Polygon to a plane, i came to another ...
0
votes
2answers
4k views

Non-Linear Transformation

Can someone explain to me in simple terms what a non-linear transformation is in maths? I know some single-variable calculus, but I read it has to do with multi-variable calculus, which I'm not ...
6
votes
5answers
3k views

Can non-linear transformations be represented as Transformation Matrices?

I just came back from an intense linear algebra lecture which showed that linear transformations could be represented by transformation matrices; with more generalization, it was later shown that ...