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[Metaballs] Blend between a blue and purple

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This commit is contained in:
Eryn Wells 2017-08-06 10:00:53 -07:00
parent ebbaee4efa
commit aa48b29e21
1 changed files with 11 additions and 3 deletions
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14
Metaballs/Shaders.metal
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@ -48,11 +48,19 @@ sampleToColorShader(RasterizerData in [[stage_in]],
const uint numberOfBalls = parameters.z;
const float sample = sampleAtPoint(in.position.xy, balls, numberOfBalls);
const float target = 1.0;
// const float variange = 0.08;
// const float halfVariance = variange / 2.0;
float4 out;
if (sample > 1.0) {
out = float4(0.0, 1.0, 0.0, 1.0);
// if (sample >= (target - halfVariance) && sample <= (target + halfVariance)) {
if (sample > target) {
const float3 left = float3(0.50, 0.79, 1.00);
const float3 right = float3(0.88, 0.50, 1.00);
const float blend = in.position.x / parameters.x;
const float invBlend = 1.0 - blend;
out = float4((blend * left.x + invBlend * right.x) / 2.0, (blend * left.y + invBlend * right.y) / 2.0, (blend * left.z + invBlend * right.z) / 2.0, 1.0);
} else {
out = float4(0.2, 0.2, 0.2, 1.0);
out = float4(0.0, 0.0, 0.0, 1.0);
}
return out;
}