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middle ring wobble upgrade

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This commit is contained in:
Benny Wysong-Grass 2020-09-15 09:28:14 -05:00
parent 038366448c
commit 351f40ff84
1 changed files with 7 additions and 3 deletions
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10
src/components/MiddleRing/MiddleRing.tsx
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@ -157,13 +157,17 @@ const MiddleRing = memo(() => {
void main() {
vUv = uv;
const float angleOffset = 0.0f;
const float wobbleStrength = 0.15f;
// compute world position of the vertex
// (ie, position after model rotation and translation)
vec3 worldPos = modelMatrix * vec3(position, 1.0f);
vec4 worldPos = modelMatrix * vec4(position, 0.0f);
float wobbleAngle = atan(worldPos.x, worldPos.z);
// use the world position to move the original point up or down
vec3 pos = position;
pos.y += 3.5 * sin(0.3 * worldPos.x) * sin(0.3 * worldPos.z);
pos.y += wobbleStrength * sin(wobbleAngle * 2.0f);
// transform this position into final viewspace
gl_Position = projectionMatrix * modelViewMatrix * vec4(pos, 1.);
@ -199,7 +203,7 @@ const MiddleRing = memo(() => {
position={[0, -0.15, 0.3]}
scale={[0.8, 0.7, 0.8]}
ref={middleRingRef}
rotation={[0, -0.9, 0]}
rotation={[0, -0.2, 0]}
>
<shaderMaterial
attach="material"