josh/j3ml
1
0
Fork 1
Code Issues 12 Pull Requests Actions Packages Projects Releases 41 Wiki Activity

Implement Transform2D

Browse Source
This commit is contained in:
josh
2024-01-23 21:46:07 -05:00
parent f04e08201d
commit d012af1214
4 changed files with 63 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
src/J3ML/LinearAlgebra/Transform2D.cpp
View File

@@ -2,4 +2,29 @@
namespace LinearAlgebra {
const Transform2D Transform2D::Identity = Transform2D({0, 0}, {1, 1}, {0,0}, {0,0}, 0);
const Transform2D Transform2D::FlipX = Transform2D({0, 0}, {-1, 1}, {0,0}, {0,0}, 0);
const Transform2D Transform2D::FlipY = Transform2D({0, 0}, {1, -1}, {0,0}, {0,0}, 0);
Vector2 Transform2D::Transform(const Vector2 &input) const {
return transformation * input;
}
Transform2D::Transform2D(const Matrix3x3 &transform) : transformation(transform) { }
Transform2D::Transform2D(const Vector2& pos, const Vector2& scale, const Vector2& origin, const Vector2& skew, float rotation) {
transformation = Matrix3x3(pos.x, pos.y, rotation, scale.x, scale.y, origin.x, origin.y, skew.x, skew.y);
}
Transform2D Transform2D::Translate(float x, float y) const {
auto copy = Matrix3x3(transformation);
copy.SetAt(0, 0, transformation.At(0, 0) + x);
copy.SetAt(0, 1, transformation.At(0, 1) + y);
return Transform2D(copy);
}
Transform2D Transform2D::Translate(const LinearAlgebra::Vector2 &input) const {
return Translate(input.x, input.y);
}
}