68 lines
1.5 KiB
Go
68 lines
1.5 KiB
Go
package shape
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import (
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"math"
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"oss.terrastruct.com/d2/lib/geo"
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"oss.terrastruct.com/d2/lib/svg"
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"oss.terrastruct.com/util-go/go2"
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)
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type shapeHexagon struct {
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*baseShape
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}
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func NewHexagon(box *geo.Box) Shape {
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shape := shapeHexagon{
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baseShape: &baseShape{
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Type: HEXAGON_TYPE,
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Box: box,
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},
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}
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shape.FullShape = go2.Pointer(Shape(shape))
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return shape
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}
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func (s shapeHexagon) GetInnerBox() *geo.Box {
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width := s.Box.Width
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height := s.Box.Height
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tl := s.Box.TopLeft.Copy()
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tl.X += width / 6.
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width /= 1.5
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tl.Y += height / 6.
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height /= 1.5
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return geo.NewBox(tl, width, height)
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}
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func hexagonPath(box *geo.Box) *svg.SvgPathContext {
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halfYFactor := 43.6 / 87.3
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pc := svg.NewSVGPathContext(box.TopLeft, box.Width, box.Height)
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pc.StartAt(pc.Absolute(0.25, 0))
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pc.L(false, 0, halfYFactor)
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pc.L(false, 0.25, 1)
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pc.L(false, 0.75, 1)
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pc.L(false, 1, halfYFactor)
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pc.L(false, 0.75, 0)
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pc.Z()
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return pc
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}
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func (s shapeHexagon) Perimeter() []geo.Intersectable {
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return hexagonPath(s.Box).Path
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}
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func (s shapeHexagon) GetSVGPathData() []string {
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return []string{
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hexagonPath(s.Box).PathData(),
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}
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}
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func (s shapeHexagon) GetDimensionsToFit(width, height, paddingX, paddingY float64) (float64, float64) {
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totalWidth := 1.5 * (width + paddingX)
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totalHeight := 1.5 * (height + paddingY)
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return math.Ceil(totalWidth), math.Ceil(totalHeight)
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}
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func (s shapeHexagon) GetDefaultPadding() (paddingX, paddingY float64) {
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return defaultPadding / 2, defaultPadding / 2
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}
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