60 lines
1.4 KiB
Go
60 lines
1.4 KiB
Go
package shape
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import (
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"oss.terrastruct.com/d2/lib/geo"
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"oss.terrastruct.com/d2/lib/svg"
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)
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type shapeParallelogram struct {
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*baseShape
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}
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const parallelWedgeWidth = 26.
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func NewParallelogram(box *geo.Box) Shape {
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return shapeParallelogram{
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baseShape: &baseShape{
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Type: PARALLELOGRAM_TYPE,
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Box: box,
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},
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}
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}
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func (s shapeParallelogram) GetInnerBox() *geo.Box {
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tl := s.Box.TopLeft.Copy()
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width := s.Box.Width - 2*parallelWedgeWidth
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tl.X += parallelWedgeWidth
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return geo.NewBox(tl, width, s.Box.Height)
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}
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func parallelogramPath(box *geo.Box) *svg.SvgPathContext {
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wedgeWidth := parallelWedgeWidth
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// Note: box width should always be larger than parallelWedgeWidth
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// this just handles after collapsing into a line
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if box.Width <= wedgeWidth {
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wedgeWidth = box.Width / 2.0
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}
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pc := svg.NewSVGPathContext(box.TopLeft, 1, 1)
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pc.StartAt(pc.Absolute(wedgeWidth, 0))
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pc.L(false, box.Width, 0)
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pc.L(false, box.Width-wedgeWidth, box.Height)
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pc.L(false, 0, box.Height)
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pc.L(false, 0, box.Height)
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pc.Z()
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return pc
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}
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func (s shapeParallelogram) Perimeter() []geo.Intersectable {
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return parallelogramPath(s.Box).Path
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}
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func (s shapeParallelogram) GetSVGPathData() []string {
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return []string{
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parallelogramPath(s.Box).PathData(),
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}
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}
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func (s shapeParallelogram) GetDimensionsToFit(width, height, padding float64) (float64, float64) {
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totalWidth := width + padding*2 + parallelWedgeWidth*2
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return totalWidth, height + padding*2
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}
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