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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,5 @@ | ||
| package bsdf | ||
|
|
||
| const ( | ||
| deltaEps = 1.0e-12 | ||
| ) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,59 +1,71 @@ | ||
| package core | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "fmt" | ||
| "math" | ||
| ) | ||
|
|
||
| type Color struct { | ||
| R, G, B Float | ||
| R, G, B Float | ||
| } | ||
|
|
||
| func NewColor(r, g, b Float) *Color { | ||
| c := &Color{} | ||
| c.R = r | ||
| c.G = g | ||
| c.B = b | ||
| return c | ||
| c := &Color{} | ||
| c.R = r | ||
| c.G = g | ||
| c.B = b | ||
| return c | ||
| } | ||
|
|
||
| func NewColorWithString(s string) *Color { | ||
| var r, g, b Float | ||
| n, _ := fmt.Sscanf(s, "(%f, %f, %f)", &r, &g, &b) | ||
| if n != 3 { | ||
| panic(fmt.Sprintf("Failed to parse Vector3d: %s", s)) | ||
| } | ||
| return &Color{r, g, b} | ||
| var r, g, b Float | ||
| n, _ := fmt.Sscanf(s, "(%f, %f, %f)", &r, &g, &b) | ||
| if n != 3 { | ||
| panic(fmt.Sprintf("Failed to parse Vector3d: %s", s)) | ||
| } | ||
| return &Color{r, g, b} | ||
| } | ||
|
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|
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| func (c *Color) Y() Float { | ||
| return 0.299 * c.R + 0.587 * c.G + 0.114 * c.B | ||
| return 0.299*c.R + 0.587*c.G + 0.114*c.B | ||
| } | ||
|
|
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| func (c *Color) IsBlack() bool { | ||
| return c.R == 0.0 && c.G == 0.0 && c.B == 0.0 | ||
| return c.R == 0.0 && c.G == 0.0 && c.B == 0.0 | ||
| } | ||
|
|
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| func (c *Color) IsNaN() bool { | ||
| return math.IsNaN(c.R) || math.IsNaN(c.G) || math.IsNaN(c.B) | ||
| } | ||
|
|
||
| func (c *Color) IsInf() bool { | ||
| return math.IsInf(c.R, 0) || math.IsInf(c.G, 0) || math.IsInf(c.B, 0) | ||
| } | ||
|
|
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| func (c *Color) IsValid() bool { | ||
| return !c.IsInf() && !c.IsNaN() | ||
| } | ||
|
|
||
| func (c1 *Color) Add(c2 *Color) *Color { | ||
| ret := &Color{} | ||
| ret.R = c1.R + c2.R | ||
| ret.G = c1.G + c2.G | ||
| ret.B = c1.B + c2.B | ||
| return ret | ||
| ret := &Color{} | ||
| ret.R = c1.R + c2.R | ||
| ret.G = c1.G + c2.G | ||
| ret.B = c1.B + c2.B | ||
| return ret | ||
| } | ||
|
|
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| func (c *Color) Scale(x Float) *Color { | ||
| ret := &Color{} | ||
| ret.R = c.R * x | ||
| ret.G = c.G * x | ||
| ret.B = c.B * x | ||
| return ret | ||
| ret := &Color{} | ||
| ret.R = c.R * x | ||
| ret.G = c.G * x | ||
| ret.B = c.B * x | ||
| return ret | ||
| } | ||
|
|
||
| func (c1 *Color) Multiply(c2 *Color) *Color { | ||
| ret := &Color{} | ||
| ret.R = c1.R * c2.R | ||
| ret.G = c1.G * c2.G | ||
| ret.B = c1.B * c2.B | ||
| return ret | ||
| ret := &Color{} | ||
| ret.R = c1.R * c2.R | ||
| ret.G = c1.G * c2.G | ||
| ret.B = c1.B * c2.B | ||
| return ret | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,31 +1,33 @@ | ||
| package core | ||
|
|
||
| import "math" | ||
|
|
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| type Intersection struct { | ||
| Pos, Normal, Wo *Vector3d | ||
| primitive *Primitive | ||
| Pos, Normal, Wo *Vector3d | ||
| primitive *Primitive | ||
| } | ||
|
|
||
| func NewIntersection(pos, normal, wo *Vector3d) *Intersection { | ||
| isect := &Intersection{} | ||
| isect.Pos = pos | ||
| isect.Normal = normal | ||
| isect.Wo = wo | ||
| isect.primitive = nil | ||
| return isect | ||
| isect := &Intersection{} | ||
| isect.Pos = pos | ||
| isect.Normal = normal | ||
| isect.Wo = wo | ||
| isect.primitive = nil | ||
| return isect | ||
| } | ||
|
|
||
| func (isect *Intersection) SpawnRay(wi *Vector3d) *Ray { | ||
| return NewRay(isect.Pos, wi) | ||
| return NewRay(isect.Pos, wi) | ||
| } | ||
|
|
||
| func (isect *Intersection) Bsdf() *Bsdf { | ||
| return NewBsdf(isect, isect.primitive.Bxdf()) | ||
| return NewBsdf(isect, isect.primitive.Bxdf()) | ||
| } | ||
|
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| func (isect *Intersection) Le(wi *Vector3d) *Color { | ||
| if isect.primitive.Light() == nil { | ||
| return NewColor(0.0, 0.0, 0.0) | ||
| } | ||
| dot := wi.Dot(isect.Normal) | ||
| return isect.primitive.Light().Le().Scale(dot) | ||
| if isect.primitive.Light() == nil { | ||
| return NewColor(0.0, 0.0, 0.0) | ||
| } | ||
| dot := math.Max(0.0, wi.Dot(isect.Normal)) | ||
| return isect.primitive.Light().Le().Scale(dot) | ||
| } |
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