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on v3length(self) | raytracer.applescript |
v3lengthSq(self) ^ 0.5 -- x ^ 0.5 calculates sqrt(x) | raytracer.applescript |
on v3unit(v) | raytracer.applescript |
v3divScalar(v, v3length(v)) | raytracer.applescript |
on v3dot(u, v) | raytracer.applescript |
(x of u) * (x of v) + (y of u) * (y of v) + (z of u) * (z of v) | raytracer.applescript |
on v3cross(self, other) | raytracer.applescript |
set res to v3(0,0,0) | raytracer.applescript |
set x of res to y of self * z of other - z of self * y of other | raytracer.applescript |
set y of res to z of self * x of other - x of self * z of other | raytracer.applescript |
set z of res to x of self * y of other - y of self * x of other | raytracer.applescript |
res | raytracer.applescript |
on v3origin() | raytracer.applescript |
v3(0,0,0) | raytracer.applescript |
on v3clone(other) | raytracer.applescript |
v3(x of other, y of other, z of other) | raytracer.applescript |
on v3isEmpty(self) | raytracer.applescript |
x of self = 0 and y of self = 0 and z of self = 0 | raytracer.applescript |
on v3print(self) | raytracer.applescript |
log ("" & x in self & " " & y in self & " " & z in self) | raytracer.applescript |
on v3copyFrom(self, other) | raytracer.applescript |
set x of self to x of other | raytracer.applescript |
set y of self to y of other | raytracer.applescript |
set z of self to z of other | raytracer.applescript |
on v3randomInRange(min, max) | raytracer.applescript |
set rng to max - min | raytracer.applescript |
return v3(random number * rng + min, random number * rng + min, random number * rng + min) | raytracer.applescript |
on randomInRange(min, max) | raytracer.applescript |
return random number * rng + min | raytracer.applescript |
on min(a, b) | raytracer.applescript |
if a < b | raytracer.applescript |
on max(a, b) | raytracer.applescript |
if a > b | raytracer.applescript |
on v3nearZero(self) | raytracer.applescript |
set s to 1e-8 | raytracer.applescript |
return (abs(x of self) < s) or (abs(y of self) < s) or (abs(z of self) < s) | raytracer.applescript |
on randomInUnitSphere() | raytracer.applescript |
set p to v3randomInRange(-1,1) | raytracer.applescript |
if v3lengthSq(p) < 1 | raytracer.applescript |
return p | raytracer.applescript |
on randomUnitVector() | raytracer.applescript |
v3unit(randomInUnitSphere()) | raytracer.applescript |
on randomInHemisphere(normal) | raytracer.applescript |
set inUnitSphere to randomInUnitSphere() | raytracer.applescript |
if (v3dot(inUnitSphere, normal) > 0.0) -- In the same hemisphere as the normal | raytracer.applescript |
return inUnitSphere | raytracer.applescript |
return v3mulScalar(inUnitSphere, -1.0) | raytracer.applescript |
on clamp(x, min, max) | raytracer.applescript |
if (x < min) | raytracer.applescript |
return min | raytracer.applescript |
if (x > max) | raytracer.applescript |
return max | raytracer.applescript |
on makeRay(origin, direction) | raytracer.applescript |
{origin:origin, direction:direction} | raytracer.applescript |
on rayAt(r, t) | raytracer.applescript |
v3add((origin of r), v3mulScalar((direction of r), t)) | raytracer.applescript |
on v3ToColor(v) | raytracer.applescript |
makeColor(x of v, y of v, z of v) | raytracer.applescript |
on correctColor(c) | raytracer.applescript |
set red of c to clamp(sqrt(red of c), 0.0, 0.999) | raytracer.applescript |
set green of c to clamp(sqrt(green of c), 0.0, 0.999) | raytracer.applescript |
set blue of c to clamp(sqrt(blue of c), 0.0, 0.999) | raytracer.applescript |
c | raytracer.applescript |
on makeHitRecord() | raytracer.applescript |
{t: 0, p: v3origin(), normal: v3origin(), frontFace: true, material: null} | raytracer.applescript |
on hitRecordCopyFrom(self, other) | raytracer.applescript |
set t of self to t of other | raytracer.applescript |
v3copyFrom(p of self, p of other) | raytracer.applescript |
v3copyFrom(normal of self, normal of other) | raytracer.applescript |
set frontFace of self to frontFace of other | raytracer.applescript |
set material of self to material of other | raytracer.applescript |
on hitRecordSetFaceNormal(self, r, outwardNormal) | raytracer.applescript |
set frontFace of self to v3dot((direction of r), outwardNormal) < 0 | raytracer.applescript |
if frontFace of self | raytracer.applescript |
set normal of self to outwardNormal | raytracer.applescript |
set normal of self to -outwardNormal | raytracer.applescript |
script spherePrototype | raytracer.applescript |
on hit(r,tMin,tMax,rec) | raytracer.applescript |
set oc to v3sub((origin of r), my sphereCenter) | raytracer.applescript |
set a to v3lengthSq(direction of r) | raytracer.applescript |
set halfB to v3dot(oc, (direction of r)) | raytracer.applescript |
set c to v3lengthSq(oc) - my sphereRadius*my sphereRadius | raytracer.applescript |
set discriminant to halfB*halfB - a*c | raytracer.applescript |
if (discriminant < 0) | raytracer.applescript |
set sqrtd to sqrt(discriminant) | raytracer.applescript |
set root to (-halfB - sqrtd) / a | raytracer.applescript |
if (root < tMin or tMax < root) | raytracer.applescript |
root = (-halfB + sqrtd) / a | raytracer.applescript |
set t of rec to root | raytracer.applescript |
set p of rec to rayAt(r, t of rec) | raytracer.applescript |
set normal of rec to v3divScalar(v3sub(p of rec, my sphereCenter), my sphereRadius) | raytracer.applescript |
set outwardNormal to v3divScalar(v3sub(p of rec, my sphereCenter), my sphereRadius) | raytracer.applescript |
hitRecordSetFaceNormal(rec, r, outwardNormal) | raytracer.applescript |
set material of rec to my material | raytracer.applescript |
end hit | raytracer.applescript |
on newSphere(_sphereCenter, _sphereRadius, _material) | raytracer.applescript |
script sphere | raytracer.applescript |
property parent: spherePrototype | raytracer.applescript |
property sphereCenter: _sphereCenter | raytracer.applescript |
property sphereRadius: _sphereRadius | raytracer.applescript |
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