From b5342688ea929c015e534c033924098591fa3d9c Mon Sep 17 00:00:00 2001
From: amandaghassaei <amandaghassaei@gmail.com>
Date: Sun, 2 Apr 2017 18:39:52 -0400
Subject: [PATCH] advection2d
---
index.html | 2 +-
main.js | 1 +
2 files changed, 2 insertions(+), 1 deletion(-)
diff --git a/index.html b/index.html
index 78692ee..afdb0a8 100644
--- a/index.html
+++ b/index.html
@@ -53,7 +53,7 @@
}
vec2 pxCenter = vec2(0.5, 0.5);
- vec2 pos = fragCoord - pxCenter + u_dt*currentVelocity;
+ vec2 pos = fragCoord - pxCenter - u_dt*currentVelocity;
if (pos.x < 0.0 || pos.x >= u_textureSize.x-1.0 || pos.y < 0.0 || pos.y >= u_textureSize.y-1.0){
//boundary
gl_FragColor = vec4(0);
diff --git a/main.js b/main.js
index 61c5c96..7eb8930 100755
--- a/main.js
+++ b/main.js
@@ -97,6 +97,7 @@ function resetWindow(){
for (var j=0;j<width;j++){
var index = 4*(i*width+j);
velocity[index] = i/100;
+ velocity[index+1] = j/100;
}
}
GPU.initTextureFromData("velocity", width, height, "FLOAT", velocity, true);
--
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