47 lines
744 B
Go
47 lines
744 B
Go
package gg
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import (
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)
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// Grouped triangles type.
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type Polygon struct {
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Transform
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Triangles
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}
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func (p *Polygon) ContainsPoint(pnt Point) bool {
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return p.MakeTriangles().ContainsPoint(pnt)
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}
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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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ShaderOptions
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Visibility
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Colority
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}
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func (p *Polygon) MakeTriangles() Triangles {
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m := p.Matrix()
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ret := make(Triangles, len(p.Triangles))
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for i, t := range p.Triangles {
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ret[i] = 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 *DrawablePolygon) Draw(c *Context) {
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(&DrawableTriangles{
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Visibility: p.Visibility,
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Colority: p.Colority,
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ShaderOptions: p.ShaderOptions,
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Triangles: p.MakeTriangles(),
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}).Draw(c)
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}
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