58 lines
1,003 B
Go
58 lines
1,003 B
Go
package ox
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import (
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"surdeus.su/core/gg"
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"surdeus.su/core/gg/mx"
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)
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// Grouped triangles type.
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type Polygon struct {
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ObjectImpl
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Transform
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mx.Triangles
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}
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func (p Polygon) GetContainedPoints(
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pts mx.Vectors,
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) (mx.Vectors) {
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return p.MakeTriangles().
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GetContainedPoints(pts)
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}
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func (p Polygon) MakeTriangles() mx.Triangles {
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m := p.Transform.GetMatrice()
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ret := make(mx.Triangles, len(p.Triangles))
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for i, t := range p.Triangles {
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ret[i] = mx.Triangle{
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t[0].Apply(m),
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t[1].Apply(m),
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t[2].Apply(m),
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}
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}
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return ret
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}
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func (p Polygon) GetVertices() mx.Vectors {
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return p.MakeTriangles().GetVertices()
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}
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func (p Polygon) GetEdges() mx.Lines {
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return p.MakeTriangles().GetEdges()
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}
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var _ = gg.Drawer(&DrawablePolygon{})
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// Polygon that can be drawn.
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type DrawablePolygon struct {
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Polygon
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Drawity
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}
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func (p *DrawablePolygon) Draw(c gg.Context) *gg.Drawing {
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tri := &DrawableTriangles{}
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tri.Triangles = p.MakeTriangles()
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tri.Drawity = p.Drawity
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return tri.Draw(c)
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}
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