d9e84812ff
- 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
40 lines
1.1 KiB
Go
40 lines
1.1 KiB
Go
package engine
|
|
|
|
// Transform represents a geometric transformation
|
|
type Transform struct {
|
|
x, y, size float64
|
|
rotation int // 0 = 0 rad, 1 = 0.5π rad, 2 = π rad, 3 = 1.5π rad
|
|
}
|
|
|
|
// NewTransform creates a new Transform
|
|
func NewTransform(x, y, size float64, rotation int) Transform {
|
|
return Transform{
|
|
x: x,
|
|
y: y,
|
|
size: size,
|
|
rotation: rotation,
|
|
}
|
|
}
|
|
|
|
// TransformIconPoint transforms a point based on the translation and rotation specification
|
|
// w and h represent the width and height of the transformed rectangle for proper corner positioning
|
|
func (t Transform) TransformIconPoint(x, y, w, h float64) Point {
|
|
right := t.x + t.size
|
|
bottom := t.y + t.size
|
|
rotation := t.rotation % 4
|
|
|
|
switch rotation {
|
|
case 1: // 90 degrees
|
|
return Point{X: right - y - h, Y: t.y + x}
|
|
case 2: // 180 degrees
|
|
return Point{X: right - x - w, Y: bottom - y - h}
|
|
case 3: // 270 degrees
|
|
return Point{X: t.x + y, Y: bottom - x - w}
|
|
default: // 0 degrees
|
|
return Point{X: t.x + x, Y: t.y + y}
|
|
}
|
|
}
|
|
|
|
// NoTransform represents an identity transformation
|
|
var NoTransform = NewTransform(0, 0, 0, 0)
|