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Fix specular lighting

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This commit is contained in:
Sven Weidauer 2023-01-19 19:43:58 +01:00
parent c7d89dc55a
commit 30e5534447
1 changed files with 2 additions and 3 deletions
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5
src/Ray.kt
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@ -1,6 +1,5 @@
import java.io.File import java.io.File
import java.lang.Float.max import java.lang.Float.max
import java.lang.Math.pow
import kotlin.math.min import kotlin.math.min
import kotlin.math.pow import kotlin.math.pow
import kotlin.math.sqrt import kotlin.math.sqrt
@ -57,7 +56,7 @@ fun main() {
val ambient = MaterialColor(0.1f, 0.1f, 0.1f) val ambient = MaterialColor(0.1f, 0.1f, 0.1f)
val light = PointLight(Point(1000f, 1000f, -500f), color = MaterialColor(0.5f, 0.5f, 0.5f)) val light = PointLight(Point(1000f, 1000f, -500f), color = MaterialColor(0.5f, 0.5f, 0.5f))
val specular = 2.4f val specular = 100f
for (y in 0 until bmp.height) { for (y in 0 until bmp.height) {
for (x in 0 until bmp.width) { for (x in 0 until bmp.width) {
@ -74,7 +73,7 @@ fun main() {
val lambert = max(0f, dot(hit.normal, rayToLight.direction)) val lambert = max(0f, dot(hit.normal, rayToLight.direction))
color += lambert * light.color color += lambert * light.color
val h = (ray.direction + rayToLight.direction).normalized() val h = (-ray.direction + rayToLight.direction).normalized()
val intensity = dot(hit.normal, h).pow(specular) val intensity = dot(hit.normal, h).pow(specular)