func main() {
// create a scene and add a single cube
scene := ln.Scene{}
scene.Add(ln.NewCube(ln.Vector{-1, -1, -1}, ln.Vector{1, 1, 1}))
// define camera parameters
eye := ln.Vector{4, 3, 2} // camera position
center := ln.Vector{0, 0, 0} // camera looks at
up := ln.Vector{0, 0, 1} // up direction
// define rendering parameters
width := 1024.0 // rendered width
height := 1024.0 // rendered height
fovy := 50.0 // vertical field of view, degrees
znear := 0.1 // near z plane
zfar := 10.0 // far z plane
step := 0.01 // how finely to chop the paths for visibility testing
// compute 2D paths that depict the 3D scene
paths := scene.Render(eye, center, up, width, height, fovy, znear, zfar, step)
// save the result as a png
paths.WriteToPNG("out.png", width, height)
// save the result as an svg
paths.WriteToSVG("out.svg", width, height)
}
func main() {
scene := ln.Scene{}
n := 15
for x := -n; x <= n; x++ {
for y := -n; y <= n; y++ {
p := rand.Float64()*0.25 + 0.2
dx := rand.Float64()*0.5 - 0.25
dy := rand.Float64()*0.5 - 0.25
fx := float64(x) + dx*0
fy := float64(y) + dy*0
fz := rand.Float64()*3 + 1
shape := ln.NewCube(ln.Vector{fx - p, fy - p, 0}, ln.Vector{fx + p, fy + p, fz})
if x == 2 && y == 1 {
continue
}
scene.Add(shape)
}
}
eye := ln.Vector{1.75, 1.25, 6}
center := ln.Vector{0, 0, 0}
up := ln.Vector{0, 0, 1}
width := 1024.0
height := 1024.0
paths := scene.Render(eye, center, up, width, height, 100, 0.1, 100, 0.01)
paths.WriteToPNG("out.png", width, height)
// paths.Print()
}
func main() {
blocks := load("examples/mountain.csv")
fmt.Println(len(blocks))
scene := ln.Scene{}
size := ln.Vector{0.5, 0.5, 0.5}
for _, v := range blocks {
scene.Add(ln.NewCube(v.Sub(size), v.Add(size)))
}
eye := ln.Vector{90, -90, 70}
center := ln.Vector{0, 0, -15}
up := ln.Vector{0, 0, 1}
width := 1920.0
height := 1080.0
paths := scene.Render(eye, center, up, width, height, 50, 0.1, 1000, 0.1)
paths.WriteToPNG("out.png", width, height)
// paths.Print()
}
func main() {
shape := ln.NewDifference(
ln.NewIntersection(
ln.NewSphere(ln.Vector{}, 1),
ln.NewCube(ln.Vector{-0.8, -0.8, -0.8}, ln.Vector{0.8, 0.8, 0.8}),
),
ln.NewCylinder(0.4, -2, 2),
ln.NewTransformedShape(ln.NewCylinder(0.4, -2, 2), ln.Rotate(ln.Vector{1, 0, 0}, ln.Radians(90))),
ln.NewTransformedShape(ln.NewCylinder(0.4, -2, 2), ln.Rotate(ln.Vector{0, 1, 0}, ln.Radians(90))),
)
for i := 0; i < 90; i += 2 {
fmt.Println(i)
scene := ln.Scene{}
m := ln.Rotate(ln.Vector{0, 0, 1}, ln.Radians(float64(i)))
scene.Add(ln.NewTransformedShape(shape, m))
eye := ln.Vector{0, 6, 2}
center := ln.Vector{0, 0, 0}
up := ln.Vector{0, 0, 1}
width := 750.0
height := 750.0
paths := scene.Render(eye, center, up, width, height, 20, 0.1, 100, 0.01)
paths.WriteToPNG(fmt.Sprintf("out%03d.png", i), width, height)
}
}
func cube(x, y, z float64) ln.Shape {
size := 0.5
v := ln.Vector{x, y, z}
return ln.NewCube(v.SubScalar(size), v.AddScalar(size))
}
func cube(x, y, z float64) ln.Shape {
a := ln.Vector{x - 0.5, y - 0.5, z - 0.5}
b := ln.Vector{x + 0.5, y + 0.5, z + 0.5}
return ln.NewCube(a, b)
}