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main.go
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package main
import (
"gotracer/internal"
"image"
"image/png"
"math"
"os"
)
func renderCircle() {
rayOrigin := internal.NewPoint(0.0, 0.0, -5.0)
wallZ := 10.0
wallSize := 7.0
canvasPixels := 500
pixelSize := wallSize / float64(canvasPixels)
half := wallSize / 2
canvas := internal.NewCanvas(canvasPixels, canvasPixels)
color := internal.NewColor(1, 0, 0)
shape := internal.NewSphere()
for y := 0; y < canvasPixels-1; y++ {
worldY := half - pixelSize*float64(y)
for x := 0; x < canvasPixels-1; x++ {
worldX := -half + pixelSize*float64(x)
position := internal.NewPoint(worldX, worldY, wallZ)
r := internal.NewRay(rayOrigin, internal.SubTuples(position, rayOrigin).Normalize())
xs := internal.Intersect(shape, r)
empty := internal.Intersection{}
if internal.Hit(xs) != empty {
canvas.WritePixelAtCoord(x, y, color)
}
}
}
writeToPng(canvas, "circle.png")
}
func renderSphere() {
rayOrigin := internal.NewPoint(0.0, 0.0, -5.0)
wallZ := 10.0
wallSize := 7.0
canvasPixels := 1024
pixelSize := wallSize / float64(canvasPixels)
half := wallSize / 2
canvas := internal.NewCanvas(canvasPixels, canvasPixels)
shape := internal.NewSphere()
shape.Material.SetColor(internal.NewColor(0.0, 0.2, 1))
lightPosition := internal.NewPoint(-10, 10, -10)
lightColor := internal.NewColor(1, 1, 1)
light := internal.NewPointLight(lightPosition, lightColor)
for y := 0; y < canvasPixels-1; y++ {
worldY := half - pixelSize*float64(y)
for x := 0; x < canvasPixels-1; x++ {
worldX := -half + pixelSize*float64(x)
position := internal.NewPoint(worldX, worldY, wallZ)
r := internal.NewRay(rayOrigin, internal.SubTuples(position, rayOrigin).Normalize())
xs := internal.Intersect(shape, r)
empty := internal.Intersection{}
if hit := internal.Hit(xs); hit != empty {
point := internal.Position(r, hit.T)
normal := internal.NormalAt(hit.Object, point, internal.Intersection{})
eye := internal.Negate(r.Direction)
color := internal.Lighting(hit.Object.GetMaterial(), internal.NewSphere(), light, point, eye, normal, 1.0)
canvas.WritePixelAtCoord(x, y, color)
}
}
}
writeToPng(canvas, "sphere.png")
}
func renderScene() {
world := internal.NewWorld()
floor := internal.NewSphere()
floor.SetTransform(internal.Scale(10, 0.1, 10))
floor.SetMaterial(internal.NewDefaultMaterial())
floor.Material.SetColor(internal.NewColor(1, 0.9, 0.9))
floor.Material.Specular = 0
world.Objects = append(world.Objects, floor)
leftWall := internal.NewSphere()
leftTransform := internal.MatrixMultiply(
internal.MatrixMultiply(
internal.MatrixMultiply(
internal.Translate(0, 0, 5),
internal.RotateY(-math.Pi/4),
),
internal.RotateX(math.Pi/2),
),
internal.Scale(10, 0.1, 10),
)
leftWall.SetTransform(leftTransform)
world.Objects = append(world.Objects, leftWall)
rightWall := internal.NewSphere()
rightTransform := internal.MatrixMultiply(
internal.MatrixMultiply(
internal.MatrixMultiply(
internal.Translate(0, 0, 5),
internal.RotateY(math.Pi/4),
),
internal.RotateX(math.Pi/2),
),
internal.Scale(10, 0.1, 10),
)
rightWall.SetTransform(rightTransform)
world.Objects = append(world.Objects, rightWall)
middle := internal.NewSphere()
middle.SetTransform(internal.Translate(-0.5, 1, 0.5))
middle.SetMaterial(internal.NewDefaultMaterial())
middle.Material.SetColor(internal.NewColor(0.1, 1, 0.5))
middle.Material.Diffuse = 0.7
middle.Material.Specular = 0.3
world.Objects = append(world.Objects, middle)
right := internal.NewSphere()
right.SetTransform(
internal.MatrixMultiply(
internal.Translate(1.5, 0.5, -0.5),
internal.Scale(0.5, 0.5, 0.5),
),
)
right.SetMaterial(internal.NewDefaultMaterial())
right.Material.SetColor(internal.NewColor(0.5, 1, 0.1))
right.Material.Diffuse = 0.7
right.Material.Specular = 0.3
world.Objects = append(world.Objects, right)
left := internal.NewSphere()
left.SetTransform(
internal.MatrixMultiply(
internal.Translate(-1.5, 0.33, -0.75),
internal.Scale(0.33, 0.33, 0.33),
),
)
left.SetMaterial(internal.NewDefaultMaterial())
left.Material.SetColor(internal.NewColor(1.0, 0.8, 0.1))
left.Material.Diffuse = 0.7
left.Material.Specular = 0.3
world.Objects = append(world.Objects, left)
world.Lights = append(world.Lights, internal.NewPointLight(internal.NewPoint(-10, 10, -10), internal.NewColor(1, 1, 1)))
camera := internal.NewCamera(1920, 1080, math.Pi/3)
camera.Transform = internal.ViewTransform(
internal.NewPoint(0, 1.5, -5),
internal.NewPoint(0, 1, 0),
internal.NewVector(0, 1, 0),
)
canvas := internal.Render(camera, world)
writeToPng(canvas, "scene.png")
}
func renderRefraction() {
world := internal.NewWorld()
camera := internal.NewCamera(1920, 1080, 0.5)
camera.Transform = internal.ViewTransform(internal.NewPoint(-4.5, 0.85, -4), internal.NewPoint(0, 0.85, 0), internal.NewVector(0, 1, 0))
wallMaterial := internal.NewDefaultMaterial()
pattern := internal.NewCheckersPattern(internal.NewColor(0, 0, 0), internal.NewColor(0.75, 0.75, 0.74))
pattern.SetTransform(internal.Scale(0.5, 0.5, 0.5))
wallMaterial.SetPattern(pattern)
wallMaterial.Specular = 0.0
floor := internal.NewPlane()
floor.SetTransform(internal.RotateY(0.31415))
floorMaterial := internal.NewDefaultMaterial()
floorMaterial.SetPattern(pattern)
floorMaterial.Ambient = 0.5
floorMaterial.Diffuse = 0.4
floorMaterial.Specular = 0.8
floorMaterial.Reflective = 0.1
floor.SetMaterial(floorMaterial)
ceil := internal.NewPlane()
ceil.SetTransform(internal.Translate(0, 5, 0))
ceilMaterial := internal.NewDefaultMaterial()
ceilPattern := internal.NewCheckersPattern(internal.NewColor(0.85, 0.85, 0.85), internal.NewColor(1, 1, 1))
ceilPattern.SetTransform(internal.Scale(0.2, 0.2, 0.2))
ceilMaterial.SetPattern(ceilPattern)
ceilMaterial.Ambient = 0.5
ceilMaterial.Specular = 0
ceil.SetMaterial(ceilMaterial)
westWall := internal.NewPlane()
westWall.SetTransform(
internal.MatrixMultiply(
internal.MatrixMultiply(
internal.Translate(-5, 0, 0),
internal.RotateZ(1.5708),
),
internal.RotateY(1.5708),
))
westWall.SetMaterial(wallMaterial)
eastWall := internal.NewPlane()
eastWall.SetTransform(
internal.MatrixMultiply(
internal.MatrixMultiply(
internal.Translate(5, 0, 0),
internal.RotateZ(1.5708),
),
internal.RotateY(1.5708),
))
eastWall.SetMaterial(wallMaterial)
northWall := internal.NewPlane()
northWall.SetTransform(
internal.MatrixMultiply(
internal.Translate(0, 0, 5),
internal.RotateX(1.5708),
),
)
northWall.SetMaterial(wallMaterial)
southWall := internal.NewPlane()
southWall.SetTransform(
internal.MatrixMultiply(
internal.Translate(0, 0, -5),
internal.RotateX(1.5708),
),
)
southWall.SetMaterial(wallMaterial)
ball1 := internal.NewSphere()
ball1.SetTransform(internal.Translate(4, 1, 4))
material1 := internal.NewDefaultMaterial()
material1.SetColor(internal.NewColor(0.8, 0.1, 0.3))
material1.Specular = 0
ball1.SetMaterial(material1)
ball2 := internal.NewSphere()
ball2.SetTransform(
internal.MatrixMultiply(
internal.Translate(4.6, 0.4, 2.9),
internal.Scale(0.4, 0.4, 0.4),
),
)
material2 := internal.NewDefaultMaterial()
material2.SetColor(internal.NewColor(0.1, 0.8, 0.2))
material2.Shininess = 200
ball2.SetMaterial(material2)
ball3 := internal.NewSphere()
ball3.SetTransform(
internal.MatrixMultiply(
internal.Translate(2.6, 0.6, 4.4),
internal.Scale(0.6, 0.6, 0.6),
),
)
material3 := internal.NewDefaultMaterial()
material3.SetColor(internal.NewColor(0.2, 0.1, 0.8))
material3.Shininess = 10
material3.Specular = 0.4
ball3.SetMaterial(material3)
glassBall := internal.NewSphere()
glassBall.SetTransform(
internal.MatrixMultiply(
internal.Translate(0.25, 1, 0),
internal.Scale(1, 1, 1),
),
)
glassMaterial := internal.NewMaterial(internal.NewColor(0.8, 0.8, 0.9), nil, 0, 0.2, 0.9, 300, 0.0, 0.8, 1.5)
glassBall.SetMaterial(glassMaterial)
world.Lights = append(world.Lights, internal.NewPointLight(internal.NewPoint(-4.9, 4.9, 1), internal.NewColor(1, 1, 1)))
world.Objects = append(world.Objects, ceil, floor, northWall, eastWall, southWall, westWall, ball1, ball2, ball3, glassBall)
canvas := internal.Render(camera, world)
writeToPng(canvas, "refraction.png")
}
func renderShadowGlamour() {
world := internal.NewWorld()
camera := internal.NewCamera(1920, 1080, 0.7854)
camera.Transform = internal.ViewTransform(internal.NewPoint(-3, 1, 2.5), internal.NewPoint(0, 0.5, 0), internal.NewVector(0, 1, 0))
light := internal.NewAreaLight(
internal.NewPoint(-1, 2, 4),
internal.NewVector(2, 0, 0),
10,
internal.NewVector(0, 2, 0),
10,
internal.NewColor(1.5, 1.5, 1.5),
)
light.Jitter = true
cube := internal.NewCube()
cube.HasShadow = false
cubeMaterial := internal.NewDefaultMaterial()
cubeMaterial.SetColor(internal.NewColor(1.5, 1.5, 1.5))
cubeMaterial.Ambient = 1.0
cubeMaterial.Diffuse = 0.0
cubeMaterial.Specular = 0.0
cube.SetMaterial(cubeMaterial)
cube.SetTransform(
internal.MatrixMultiply(
internal.Translate(0, 3, 4),
internal.Scale(1, 1, 0.01),
),
)
plane := internal.NewPlane()
planeMaterial := internal.NewDefaultMaterial()
planeMaterial.SetColor(internal.NewColor(1, 1, 1))
planeMaterial.Ambient = 0.025
planeMaterial.Diffuse = 0.67
planeMaterial.Specular = 0.0
plane.SetMaterial(planeMaterial)
sphere1 := internal.NewSphere()
sphereMaterial1 := internal.NewDefaultMaterial()
sphereMaterial1.SetColor(internal.NewColor(1, 0, 0))
sphereMaterial1.Ambient = 0.1
sphereMaterial1.Diffuse = 0.6
sphereMaterial1.Reflective = 0.3
sphereMaterial1.Specular = 0.0
sphere1.SetMaterial(sphereMaterial1)
sphere1.SetTransform(
internal.MatrixMultiply(
internal.Translate(0.5, 0.5, 0),
internal.Scale(0.5, 0.5, 0.5),
),
)
sphere2 := internal.NewSphere()
sphereMaterial2 := internal.NewDefaultMaterial()
sphereMaterial2.SetColor(internal.NewColor(0.5, 0.5, 1))
sphereMaterial2.Ambient = 0.1
sphereMaterial2.Diffuse = 0.6
sphereMaterial2.Reflective = 0.3
sphereMaterial2.Specular = 0.0
sphere2.SetMaterial(sphereMaterial2)
sphere2.SetTransform(
internal.MatrixMultiply(
internal.Translate(-0.25, 0.33, 0),
internal.Scale(0.33, 0.33, 0.33),
),
)
world.Lights = append(world.Lights, light)
world.Objects = append(world.Objects, cube, plane, sphere1, sphere2)
canvas := internal.Render(camera, world)
writeToPng(canvas, "shadow_glamour.png")
}
func renderReflectionRefraction() {
world := internal.NewWorld()
camera := internal.NewCamera(1920, 1080, 1.152)
camera.Transform = internal.ViewTransform(
internal.NewPoint(-2.6, 1.5, -3.9),
internal.NewPoint(-0.6, 1, -0.8),
internal.NewPoint(0, 1, 0),
)
light := internal.NewPointLight(internal.NewPoint(-4.9, 4.9, -1), internal.NewColor(1, 1, 1))
wallMaterial := internal.NewDefaultMaterial()
wallPattern := internal.NewStripePattern(
internal.NewColor(0.45, 0.45, 0.45),
internal.NewColor(0.55, 0.55, 0.55),
)
wallPattern.SetTransform(
internal.MatrixMultiply(
internal.RotateY(1.5708),
internal.Scale(0.25, 0.25, 0.25),
),
)
wallMaterial.Ambient = 0.0
wallMaterial.Diffuse = 0.4
wallMaterial.Specular = 0.0
wallMaterial.Reflective = 0.3
wallMaterial.SetPattern(wallPattern)
floor := internal.NewPlane()
floor.SetTransform(internal.RotateY(0.31415))
floorMaterial := internal.NewDefaultMaterial()
floorPattern := internal.NewCheckersPattern(
internal.NewColor(0.35, 0.35, 0.35),
internal.NewColor(0.65, 0.65, 0.65),
)
floorMaterial.SetPattern(floorPattern)
floorMaterial.Specular = 0.0
floorMaterial.Reflective = 0.4
floor.SetMaterial(floorMaterial)
ceiling := internal.NewPlane()
ceiling.SetTransform(internal.Translate(0, 5, 0))
ceilingMaterial := internal.NewDefaultMaterial()
ceilingMaterial.Ambient = 0.3
ceilingMaterial.Specular = 0.0
ceilingMaterial.SetColor(internal.NewColor(0.8, 0.8, 0.8))
ceiling.SetMaterial(ceilingMaterial)
westWall := internal.NewPlane()
westWall.SetTransform(
internal.MatrixMultiply(
internal.MatrixMultiply(
internal.Translate(-5, 0, 0),
internal.RotateZ(1.5708),
),
internal.RotateY(1.5708),
),
)
westWall.SetMaterial(wallMaterial)
eastWall := internal.NewPlane()
eastWall.SetTransform(
internal.MatrixMultiply(
internal.MatrixMultiply(
internal.Translate(5, 0, 0),
internal.RotateZ(1.5708),
),
internal.RotateY(1.5708),
),
)
eastWall.SetMaterial(wallMaterial)
northWall := internal.NewPlane()
northWall.SetTransform(
internal.MatrixMultiply(
internal.Translate(0, 0, 5),
internal.RotateX(1.5708),
),
)
northWall.SetMaterial(wallMaterial)
southWall := internal.NewPlane()
southWall.SetTransform(
internal.MatrixMultiply(
internal.Translate(0, 0, -5),
internal.RotateX(1.5708),
),
)
southWall.SetMaterial(wallMaterial)
ball1 := internal.NewSphere()
ball1.SetTransform(
internal.MatrixMultiply(
internal.Translate(4.6, 0.4, 1),
internal.Scale(0.4, 0.4, 0.4),
),
)
ball1Material := internal.NewDefaultMaterial()
ball1Material.SetColor(internal.NewColor(0.8, 0.5, 0.3))
ball1Material.Shininess = 50
ball1.SetMaterial(ball1Material)
ball2 := internal.NewSphere()
ball2.SetTransform(
internal.MatrixMultiply(
internal.Translate(4.7, 0.3, 0.4),
internal.Scale(0.3, 0.3, 0.3),
),
)
ball2Material := internal.NewDefaultMaterial()
ball2Material.SetColor(internal.NewColor(0.9, 0.4, 0.5))
ball2Material.Shininess = 50
ball2.SetMaterial(ball2Material)
ball3 := internal.NewSphere()
ball3.SetTransform(
internal.MatrixMultiply(
internal.Translate(-1, 0.5, 4.5),
internal.Scale(0.5, 0.5, 0.5),
),
)
ball3Material := internal.NewDefaultMaterial()
ball3Material.SetColor(internal.NewColor(0.4, 0.9, 0.6))
ball3Material.Shininess = 50
ball3.SetMaterial(ball3Material)
ball4 := internal.NewSphere()
ball4.SetTransform(
internal.MatrixMultiply(
internal.Translate(-1.7, 0.3, 4.7),
internal.Scale(0.3, 0.3, 0.3),
),
)
ball4Material := internal.NewDefaultMaterial()
ball4Material.SetColor(internal.NewColor(0.4, 0.6, 0.9))
ball4Material.Shininess = 50
ball4.SetMaterial(ball4Material)
ball5 := internal.NewSphere()
ball5.SetTransform(
internal.Translate(-0.6, 1, 0.6),
)
ball5Material := internal.NewDefaultMaterial()
ball5Material.SetColor(internal.NewColor(1, 0.3, 0.2))
ball5Material.Specular = 0.4
ball5Material.Shininess = 5
ball5.SetMaterial(ball5Material)
ball6 := internal.NewSphere()
ball6.SetTransform(
internal.MatrixMultiply(
internal.Translate(0.6, 0.7, -0.6),
internal.Scale(0.7, 0.7, 0.7),
),
)
ball6Material := internal.NewDefaultMaterial()
ball6Material.SetColor(internal.NewColor(0, 0, 0.2))
ball6Material.Ambient = 0.0
ball6Material.Diffuse = 0.4
ball6Material.Specular = 0.9
ball6Material.Shininess = 300
ball6Material.Reflective = 0.9
ball6Material.Transparency = 0.9
ball6Material.RefractiveIndex = 1.5
ball6.SetMaterial(ball6Material)
ball7 := internal.NewSphere()
ball7.SetTransform(
internal.MatrixMultiply(
internal.Translate(-0.7, 0.5, -0.8),
internal.Scale(0.5, 0.5, 0.5),
),
)
ball7Material := internal.Material{}
ball7Material.SetColor(internal.NewColor(0, 0.2, 0))
ball7Material.Ambient = 0.0
ball7Material.Diffuse = 0.4
ball7Material.Specular = 0.9
ball7Material.Shininess = 300
ball7Material.Reflective = 0.9
ball7Material.Transparency = 0.9
ball7Material.RefractiveIndex = 1.5
ball7.SetMaterial(ball7Material)
objects := []internal.Shape{
floor,
ceiling,
northWall,
southWall,
eastWall,
westWall,
ball1,
ball2,
ball3,
ball4,
ball5,
ball6,
ball7,
}
world.Lights = append(world.Lights, light)
world.Objects = append(world.Objects, objects...)
canvas := internal.Render(camera, world)
writeToPng(canvas, "reflection_refraction.png")
}
func renderTable() {
world := internal.NewWorld()
camera := internal.NewCamera(1920, 1080, 0.785)
camera.Transform = internal.ViewTransform(internal.NewPoint(8, 6, -8), internal.NewPoint(0, 3, 0), internal.NewVector(0, 1, 0))
light := internal.NewPointLight(internal.NewPoint(0, 6.9, -5), internal.NewColor(1, 1, 0.9))
floor := internal.NewCube()
floorMaterial := internal.NewDefaultMaterial()
floorPattern := internal.NewCheckersPattern(
internal.NewColor(0, 0, 0),
internal.NewColor(0.25, 0.25, 0.25),
)
floorPattern.SetTransform(internal.Scale(0.07, 0.07, 0.07))
floorMaterial.Ambient = 0.25
floorMaterial.Diffuse = 0.7
floorMaterial.Specular = 0.9
floorMaterial.Shininess = 300
floorMaterial.Reflective = 0.1
floorMaterial.SetPattern(floorPattern)
floor.SetMaterial(floorMaterial)
floor.SetTransform(
internal.MatrixMultiply(
internal.Scale(20, 7, 20),
internal.Translate(0, 1, 0),
),
)
wall := internal.NewCube()
wallMaterial := internal.NewDefaultMaterial()
wallPattern := internal.NewCheckersPattern(
internal.NewColor(0.4863, 0.3765, 0.2941),
internal.NewColor(0.3725, 0.2902, 0.2275),
)
wallPattern.SetTransform(internal.Scale(0.05, 20, 0.05))
wallMaterial.Ambient = 0.1
wallMaterial.Diffuse = 0.7
wallMaterial.Specular = 0.9
wallMaterial.Shininess = 300
wallMaterial.Reflective = 0.1
wallMaterial.SetPattern(wallPattern)
wall.SetMaterial(wallMaterial)
wall.SetTransform(internal.Scale(10, 10, 10))
tableTop := internal.NewCube()
tableMaterial := internal.NewDefaultMaterial()
tablePattern := internal.NewStripePattern(
internal.NewColor(0.5529, 0.4235, 0.3255),
internal.NewColor(0.6588, 0.5098, 0.4000),
)
tablePattern.SetTransform(
internal.MatrixMultiply(
internal.Scale(0.05, 0.05, 0.05),
internal.RotateY(0.1),
),
)
tableMaterial.Ambient = 0.1
tableMaterial.Diffuse = 0.7
tableMaterial.Specular = 0.9
tableMaterial.Shininess = 300
tableMaterial.Reflective = 0.2
tableMaterial.SetPattern(tablePattern)
tableTop.SetMaterial(tableMaterial)
tableTop.SetTransform(
internal.MatrixMultiply(
internal.Translate(0, 3.1, 0),
internal.Scale(3, 0.1, 2),
),
)
legMaterial := internal.NewDefaultMaterial()
legMaterial.SetColor(internal.NewColor(0.5529, 0.4235, 0.3255))
legMaterial.Ambient = 0.2
legMaterial.Diffuse = 0.7
leg1 := internal.NewCube()
leg1.SetMaterial(legMaterial)
leg1.SetTransform(
internal.MatrixMultiply(
internal.Translate(2.7, 1.5, -1.7),
internal.Scale(0.1, 1.5, 0.1),
),
)
leg2 := internal.NewCube()
leg2.SetMaterial(legMaterial)
leg2.SetTransform(
internal.MatrixMultiply(
internal.Translate(2.7, 1.5, 1.7),
internal.Scale(0.1, 1.5, 0.1),
),
)
leg3 := internal.NewCube()
leg3.SetMaterial(legMaterial)
leg3.SetTransform(
internal.MatrixMultiply(
internal.Translate(-2.7, 1.5, -1.7),
internal.Scale(0.1, 1.5, 0.1),
),
)
leg4 := internal.NewCube()
leg4.SetMaterial(legMaterial)
leg4.SetTransform(
internal.MatrixMultiply(
internal.Translate(-2.7, 1.5, 1.7),
internal.Scale(0.1, 1.5, 0.1),
),
)
glassCube := internal.NewCube()
glassCube.HasShadow = false
glassCube.SetTransform(
internal.MatrixMultiply(
internal.Translate(0, 3.45001, 0),
internal.MatrixMultiply(
internal.RotateY(0.2),
internal.Scale(0.25, 0.25, 0.25),
),
),
)
glassCubeMaterial := internal.NewDefaultMaterial()
glassCubeMaterial.SetColor(internal.NewColor(1, 1, 0.8))
glassCubeMaterial.Ambient = 0.0
glassCubeMaterial.Diffuse = 0.3
glassCubeMaterial.Specular = 0.9
glassCubeMaterial.Shininess = 300
glassCubeMaterial.Reflective = 0.7
glassCubeMaterial.Transparency = 0.7
glassCubeMaterial.RefractiveIndex = 1.5
glassCube.SetMaterial(glassCubeMaterial)
cube1 := internal.NewCube()
cube1.SetTransform(
internal.MatrixMultiply(
internal.Translate(1, 3.35, -0.9),
internal.MatrixMultiply(
internal.RotateY(-0.4),
internal.Scale(0.15, 0.15, 0.15),
),
),
)
cube1Material := internal.NewDefaultMaterial()
cube1Material.SetColor(internal.NewColor(1, 0.5, 0.5))
cube1Material.Reflective = 0.6
cube1Material.Diffuse = 0.4
cube1.SetMaterial(cube1Material)
cube2 := internal.NewCube()
cube2.SetTransform(
internal.MatrixMultiply(
internal.Translate(-1.5, 3.27, 0.3),
internal.MatrixMultiply(
internal.RotateY(0.4),
internal.Scale(0.15, 0.07, 0.15),
),
),
)
cube2Material := internal.NewDefaultMaterial()
cube2Material.SetColor(internal.NewColor(1, 1, 0.5))
cube2.SetMaterial(cube2Material)
cube3 := internal.NewCube()
cube3.SetTransform(
internal.MatrixMultiply(
internal.Translate(0, 3.25, 1),
internal.MatrixMultiply(
internal.RotateY(0.4),
internal.Scale(0.2, 0.05, 0.05),
),
),
)
cube3Material := internal.NewDefaultMaterial()
cube3Material.SetColor(internal.NewColor(0.5, 1, 0.5))
cube3.SetMaterial(cube3Material)
cube4 := internal.NewCube()
cube4.SetTransform(
internal.MatrixMultiply(
internal.Translate(-0.6, 3.4, -1),
internal.MatrixMultiply(
internal.RotateY(0.8),
internal.Scale(0.05, 0.2, 0.05),
),
),
)
cube4Material := internal.NewDefaultMaterial()
cube4Material.SetColor(internal.NewColor(0.5, 0.5, 1))
cube4.SetMaterial(cube4Material)
cube5 := internal.NewCube()
cube5.SetTransform(
internal.MatrixMultiply(
internal.Translate(2, 3.4, 1),
internal.MatrixMultiply(
internal.RotateY(0.8),
internal.Scale(0.05, 0.2, 0.05),
),
),
)
cube5Material := internal.NewDefaultMaterial()
cube5Material.SetColor(internal.NewColor(0.5, 1, 1))
cube5.SetMaterial(cube5Material)
frame1 := internal.NewCube()
frame1.SetTransform(
internal.MatrixMultiply(
internal.Translate(-10, 4, 1),
internal.Scale(0.05, 1, 1),
),
)
frame1Material := internal.NewDefaultMaterial()
frame1Material.SetColor(internal.NewColor(0.7098, 0.2471, 0.2196))
frame1Material.Diffuse = 0.6
frame1.SetMaterial(frame1Material)
frame2 := internal.NewCube()
frame2.SetTransform(
internal.MatrixMultiply(
internal.Translate(-10, 3.4, 2.7),
internal.Scale(0.05, 0.4, 0.4),
),
)
frame2Material := internal.NewDefaultMaterial()
frame2Material.SetColor(internal.NewColor(0.2667, 0.2706, 0.6902))
frame2Material.Diffuse = 0.6
frame2.SetMaterial(frame2Material)
frame3 := internal.NewCube()
frame3.SetTransform(
internal.MatrixMultiply(
internal.Translate(-10, 4.6, 2.7),
internal.Scale(0.05, 0.4, 0.4),
),
)
frame3Material := internal.NewDefaultMaterial()
frame3Material.SetColor(internal.NewColor(0.3098, 0.5961, 0.3098))
frame3Material.Diffuse = 0.6
frame3.SetMaterial(frame3Material)
frame4 := internal.NewCube()
frame4.SetTransform(
internal.MatrixMultiply(
internal.Translate(-2, 3.5, 9.95),
internal.Scale(5, 1.5, 0.05),
),
)
frame4Material := internal.NewDefaultMaterial()
frame4Material.SetColor(internal.NewColor(0.3882, 0.2627, 0.1882))
frame4Material.Diffuse = 0.7
frame4.SetMaterial(frame4Material)
mirror := internal.NewCube()
mirror.SetTransform(
internal.MatrixMultiply(
internal.Translate(-2, 3.5, 9.95),
internal.Scale(4.8, 1.4, 0.06),
),
)
mirrorMaterial := internal.NewDefaultMaterial()
mirrorMaterial.SetColor(internal.NewColor(0, 0, 0))
mirrorMaterial.Diffuse = 0.0
mirrorMaterial.Ambient = 0.0
mirrorMaterial.Specular = 1.0
mirrorMaterial.Shininess = 300
mirrorMaterial.Reflective = 1.0
mirror.SetMaterial(mirrorMaterial)
objects := []internal.Shape{
floor,
wall,
tableTop,
leg1,
leg2,
leg3,
leg4,
frame1,
frame2,
frame3,
frame4,
glassCube,
cube1,
cube2,
cube3,
cube4,
cube5,
mirror,
}
world.Lights = append(world.Lights, light)
world.Objects = append(world.Objects, objects...)
canvas := internal.Render(camera, world)
writeToPng(canvas, "table.png")
}
func renderCylinders() {
world := internal.NewWorld()
camera := internal.NewCamera(1920, 1080, 0.314)
camera.Transform = internal.ViewTransform(internal.NewPoint(8, 3.5, -9), internal.NewPoint(0, 0.3, 0), internal.NewPoint(0, 1, 0))
light := internal.NewPointLight(internal.NewPoint(1, 6.9, -4.9), internal.NewColor(1, 1, 1))
floor := internal.NewPlane()
floorMaterial := internal.NewDefaultMaterial()
floorPattern := internal.NewCheckersPattern(
internal.NewColor(0.5, 0.5, 0.5),
internal.NewColor(0.75, 0.75, 0.75),
)
floorPattern.SetTransform(
internal.MatrixMultiply(
internal.RotateY(0.3),
internal.Scale(0.25, 0.25, 0.25),
),
)
floorMaterial.SetPattern(floorPattern)
floorMaterial.Ambient = 0.2
floorMaterial.Diffuse = 0.9
floorMaterial.Specular = 0.0
floor.SetMaterial(floorMaterial)
cylinder1 := internal.NewCylinder()
cylinder1.Minimum = 0
cylinder1.Maximum = 0.75
cylinder1.Closed = true
cylinder1.SetTransform(
internal.MatrixMultiply(
internal.Translate(-1, 0, 1),
internal.Scale(0.5, 1, 0.5),
),
)
cylinder1Material := internal.NewDefaultMaterial()
cylinder1Material.SetColor(internal.NewColor(0, 0, 0.6))
cylinder1Material.Diffuse = 0.1
cylinder1Material.Specular = 0.9
cylinder1Material.Shininess = 300
cylinder1Material.Reflective = 0.9
cylinder1.SetMaterial(cylinder1Material)
cylinder2 := internal.NewCylinder()
cylinder2.Minimum = 0
cylinder2.Maximum = 0.2
cylinder2.Closed = false
cylinder2.SetTransform(
internal.MatrixMultiply(
internal.Translate(1, 0, 0),
internal.Scale(0.8, 1, 0.8),
),
)
cylinder2Material := internal.NewDefaultMaterial()
cylinder2Material.SetColor(internal.NewColor(1, 1, 0.3))
cylinder2Material.Ambient = 0.1
cylinder2Material.Diffuse = 0.8
cylinder2Material.Specular = 0.9
cylinder2Material.Shininess = 300
cylinder2.SetMaterial(cylinder2Material)
cylinder3 := internal.NewCylinder()
cylinder3.Minimum = 0
cylinder3.Maximum = 0.3
cylinder3.Closed = false
cylinder3.SetTransform(
internal.MatrixMultiply(
internal.Translate(1, 0, 0),
internal.Scale(0.6, 1, 0.6),
),
)
cylinder3Material := internal.NewDefaultMaterial()
cylinder3Material.SetColor(internal.NewColor(1, 0.9, 0.4))
cylinder3Material.Ambient = 0.1
cylinder3Material.Diffuse = 0.8
cylinder3Material.Specular = 0.9
cylinder3Material.Shininess = 300
cylinder3.SetMaterial(cylinder3Material)
cylinder4 := internal.NewCylinder()
cylinder4.Minimum = 0
cylinder4.Maximum = 0.4
cylinder4.Closed = false
cylinder4.SetTransform(
internal.MatrixMultiply(
internal.Translate(1, 0, 0),
internal.Scale(0.4, 1, 0.4),
),
)
cylinder4Material := internal.NewDefaultMaterial()
cylinder4Material.SetColor(internal.NewColor(1, 0.8, 0.5))
cylinder4Material.Ambient = 0.1
cylinder4Material.Diffuse = 0.8
cylinder4Material.Specular = 0.9
cylinder4Material.Shininess = 300
cylinder4.SetMaterial(cylinder4Material)
cylinder5 := internal.NewCylinder()
cylinder5.Minimum = 0
cylinder5.Maximum = 0.5
cylinder5.Closed = true
cylinder5.SetTransform(
internal.MatrixMultiply(
internal.Translate(1, 0, 0),
internal.Scale(0.2, 1, 0.2),
),
)
cylinder5Material := internal.NewDefaultMaterial()
cylinder5Material.SetColor(internal.NewColor(1, 0.7, 0.6))
cylinder5Material.Ambient = 0.1
cylinder5Material.Diffuse = 0.8
cylinder5Material.Specular = 0.9
cylinder5Material.Shininess = 300
cylinder5.SetMaterial(cylinder5Material)
cylinder6 := internal.NewCylinder()
cylinder6.Minimum = 0
cylinder6.Maximum = 0.3
cylinder6.Closed = true
cylinder6.SetTransform(
internal.MatrixMultiply(
internal.Translate(0, 0, -0.75),
internal.Scale(0.05, 1, 0.05),
),
)
cylinder6Material := internal.NewDefaultMaterial()