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package draw
import (
"../llog"
"../structs"
"github.com/fogleman/ln/ln"
)
func drawStar3D(scene ln.Scene, star structs.Star) ln.Scene {
starSize := 0.1
oneCorner := ln.Vector{star.C.X - starSize, star.C.Y - starSize, star.C.Z - starSize}
otherCorner := ln.Vector{star.C.X + starSize, star.C.Y + starSize, star.C.Z + starSize}
scene.Add(ln.NewCube(oneCorner, otherCorner))
return scene
}
func drawStars3D(scene ln.Scene, slice []structs.Star) ln.Scene {
for _, star := range slice {
scene = drawStar3D(scene, star)
}
return scene
}
func Slice3D(slice []structs.Star, path string) {
// create a scene and add a single cube
scene := ln.Scene{}
llog.Good("Drawing the Stars")
scene = drawStars3D(scene, slice)
llog.Good("Done Drawing the Stars")
// 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
llog.Good("Configuring path")
// compute 2D paths that depict the 3D scene
paths := scene.Render(eye, center, up, width, height, fovy, znear, zfar, step)
llog.Good("Done")
// render the paths in an image
llog.Good("Writing to png")
paths.WriteToPNG(path, width, height)
}
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