80 lines
2.3 KiB
Go
80 lines
2.3 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 shapeQueue struct {
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*baseShape
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}
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func NewQueue(box *geo.Box) Shape {
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return shapeQueue{
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baseShape: &baseShape{
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Type: QUEUE_TYPE,
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Box: box,
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},
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}
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}
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func getArcWidth(box *geo.Box) float64 {
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arcWidth := defaultArcDepth
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// Note: box width should always be larger than 3*default
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// this just handles after collaping into an oval
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if box.Width < arcWidth*2 {
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arcWidth = box.Width / 2.0
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}
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return arcWidth
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}
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func (s shapeQueue) GetInnerBox() *geo.Box {
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width := s.Box.Width
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tl := s.Box.TopLeft.Copy()
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arcWidth := getArcWidth(s.Box)
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width -= 3 * arcWidth
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tl.X += arcWidth
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return geo.NewBox(tl, width, s.Box.Height)
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}
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func queueOuterPath(box *geo.Box) *svg.SvgPathContext {
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arcWidth := getArcWidth(box)
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multiplier := 0.45
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pc := svg.NewSVGPathContext(box.TopLeft, 1, 1)
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pc.StartAt(pc.Absolute(arcWidth, 0))
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pc.H(true, box.Width-2*arcWidth)
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pc.C(false, box.Width, 0, box.Width, box.Height*multiplier, box.Width, box.Height/2.0)
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pc.C(false, box.Width, box.Height-box.Height*multiplier, box.Width, box.Height, box.Width-arcWidth, box.Height)
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pc.H(true, -1*(box.Width-2*arcWidth))
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pc.C(false, 0, box.Height, 0, box.Height-box.Height*multiplier, 0, box.Height/2.0)
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pc.C(false, 0, box.Height*multiplier, 0, 0, arcWidth, 0)
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pc.Z()
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return pc
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}
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func queueInnerPath(box *geo.Box) *svg.SvgPathContext {
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arcWidth := getArcWidth(box)
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multiplier := 0.45
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pc := svg.NewSVGPathContext(box.TopLeft, 1, 1)
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pc.StartAt(pc.Absolute(box.Width-arcWidth, 0))
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pc.C(false, box.Width-2*arcWidth, 0, box.Width-2*arcWidth, box.Height*multiplier, box.Width-2*arcWidth, box.Height/2.0)
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pc.C(false, box.Width-2*arcWidth, box.Height-box.Height*multiplier, box.Width-2*arcWidth, box.Height, box.Width-arcWidth, box.Height)
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return pc
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}
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func (s shapeQueue) Perimeter() []geo.Intersectable {
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return queueOuterPath(s.Box).Path
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}
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func (s shapeQueue) GetSVGPathData() []string {
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return []string{
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queueOuterPath(s.Box).PathData(),
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queueInnerPath(s.Box).PathData(),
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}
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}
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func (s shapeQueue) GetDimensionsToFit(width, height, paddingX, paddingY float64) (float64, float64) {
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// 1 arc left, width+ padding, 2 arcs right
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totalWidth := 3*defaultArcDepth + width + paddingX
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return totalWidth, height + paddingY
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}
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