34 lines
623 B
Go
34 lines
623 B
Go
package main
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// Sphere
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type Sphere struct {
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center Vector3
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radius float64
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color Color
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}
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func (s Sphere) Distance(p Vector3) (float64, Color) {
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return p.Sub(s.center).Length(), s.color
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}
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// Box
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type Box struct {
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center Vector3
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dimensions Vector3
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color Color
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}
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func (s Box) Distance(p Vector3) (float64, Color) {
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q := p.Sub(s.center).Abs().Sub(s.dimensions)
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return q.Max(0.0).Length() + min(max(q.X, max(q.Y, q.Z)), 0.0), s.color
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}
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type Plane struct {
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normal Vector3
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height float64
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color Color
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}
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func (s Plane) Distance(p Vector3) (float64, Color) {
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return p.Dot(s.normal) + s.height, s.color
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}
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