Initial release: Go Jdenticon library v0.1.0

- Core library with SVG and PNG generation
- CLI tool with generate and batch commands
- Cross-platform path handling for Windows compatibility
- Comprehensive test suite with integration tests

internal/engine/transform.go

@@ -1,61 +1,5 @@
 package engine
 
-import "math"
-
-// Matrix represents a 2D transformation matrix in the form:
-// | A C E |
-// | B D F |
-// | 0 0 1 |
-type Matrix struct {
-	A, B, C, D, E, F float64
-}
-
-// NewIdentityMatrix creates an identity matrix
-func NewIdentityMatrix() Matrix {
-	return Matrix{
-		A: 1, B: 0, C: 0,
-		D: 1, E: 0, F: 0,
-	}
-}
-
-// Translate creates a translation matrix
-func Translate(x, y float64) Matrix {
-	return Matrix{
-		A: 1, B: 0, C: 0,
-		D: 1, E: x, F: y,
-	}
-}
-
-// Rotate creates a rotation matrix for the given angle in radians
-func Rotate(angle float64) Matrix {
-	cos := math.Cos(angle)
-	sin := math.Sin(angle)
-	return Matrix{
-		A: cos, B: sin, C: -sin,
-		D: cos, E: 0, F: 0,
-	}
-}
-
-// Scale creates a scaling matrix
-func Scale(sx, sy float64) Matrix {
-	return Matrix{
-		A: sx, B: 0, C: 0,
-		D: sy, E: 0, F: 0,
-	}
-}
-
-// Multiply multiplies two matrices
-func (m Matrix) Multiply(other Matrix) Matrix {
-	return Matrix{
-		A: m.A*other.A + m.C*other.B,
-		B: m.B*other.A + m.D*other.B,
-		C: m.A*other.C + m.C*other.D,
-		D: m.B*other.C + m.D*other.D,
-		E: m.A*other.E + m.C*other.F + m.E,
-		F: m.B*other.E + m.D*other.F + m.F,
-	}
-}
-
 // Transform represents a geometric transformation
 type Transform struct {
 	x, y, size float64
@@ -91,13 +35,5 @@ func (t Transform) TransformIconPoint(x, y, w, h float64) Point {
 	}
 }
 
-// ApplyTransform applies a transformation matrix to a point
-func ApplyTransform(point Point, matrix Matrix) Point {
-	return Point{
-		X: matrix.A*point.X + matrix.C*point.Y + matrix.E,
-		Y: matrix.B*point.X + matrix.D*point.Y + matrix.F,
-	}
-}
-
 // NoTransform represents an identity transformation
-var NoTransform = NewTransform(0, 0, 0, 0)
+var NoTransform = NewTransform(0, 0, 0, 0)