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changeset 1353:93a6d70d845f

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fix: make perlin noise 0..1 instead of -1..1
author sam <sam@basx.dev>
date Fri, 27 Sep 2024 23:44:37 +0700
parents 7b8a6b5e9a46
children 8ad6e4cfcb2d
files semicongine/contrib/algorithms/noise.nim
diffstat 1 files changed, 6 insertions(+), 5 deletions(-) [+]
line wrap: on
line diff
--- a/semicongine/contrib/algorithms/noise.nim	Wed Sep 11 23:26:08 2024 +0700
+++ b/semicongine/contrib/algorithms/noise.nim	Fri Sep 27 23:44:37 2024 +0700
@@ -27,8 +27,9 @@
     xinterpol = pos.x - topleft.x
     yinterpol = pos.y - topleft.y
 
-  return interpolate(
-    interpolate(topleft_dot, bottomleft_dot, yinterpol),
-    interpolate(topright_dot, bottomright_dot, yinterpol),
-    xinterpol,
-  )
+  return
+    interpolate(
+      interpolate(topleft_dot, bottomleft_dot, yinterpol),
+      interpolate(topright_dot, bottomright_dot, yinterpol),
+      xinterpol,
+    ) * 0.5 + 0.5