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/*
Copyright (c) 2019 The Khronos Group Inc.
Use of this source code is governed by an MIT-style license that can be
found in the LICENSE.txt file.
*/
#ifdef GL_ES
precision mediump float;
#endif
varying vec4 color;
float lerp(float a, float b, float s)
{
return a + (b - a) * s;
}
void main (void)
{
float sinValues[17];
sinValues[0] = 0.0;
sinValues[1] = 0.382683;
sinValues[2] = 0.707107;
sinValues[3] = 0.92388;
sinValues[4] = 1.0;
sinValues[5] = 0.92388;
sinValues[6] = 0.707107;
sinValues[7] = 0.382683;
sinValues[8] = 0.0;
sinValues[9] = -0.382683;
sinValues[10] = -0.707107;
sinValues[11] = -0.92388;
sinValues[12] = -1.0;
sinValues[13] = -0.923879;
sinValues[14] = -0.707107;
sinValues[15] = -0.382683;
sinValues[16] = 0.0;
const float M_PI = 3.14159265358979323846;
float c = 2.0 * M_PI * color.r;
float arrVal = c * 2.546478971;
int arr0 = int(floor(arrVal));
float weight = arrVal - floor(arrVal);
float sin_c = 0.0;
if (arr0 == 0)
sin_c = lerp(sinValues[0], sinValues[1], weight);
else if (arr0 == 1)
sin_c = lerp(sinValues[1], sinValues[2], weight);
else if (arr0 == 2)
sin_c = lerp(sinValues[2], sinValues[3], weight);
else if (arr0 == 3)
sin_c = lerp(sinValues[3], sinValues[4], weight);
else if (arr0 == 4)
sin_c = lerp(sinValues[4], sinValues[5], weight);
else if (arr0 == 5)
sin_c = lerp(sinValues[5], sinValues[6], weight);
else if (arr0 == 6)
sin_c = lerp(sinValues[6], sinValues[7], weight);
else if (arr0 == 7)
sin_c = lerp(sinValues[7], sinValues[8], weight);
else if (arr0 == 8)
sin_c = lerp(sinValues[8], sinValues[9], weight);
else if (arr0 == 9)
sin_c = lerp(sinValues[9], sinValues[10], weight);
else if (arr0 == 10)
sin_c = lerp(sinValues[10], sinValues[11], weight);
else if (arr0 == 11)
sin_c = lerp(sinValues[11], sinValues[12], weight);
else if (arr0 == 12)
sin_c = lerp(sinValues[12], sinValues[13], weight);
else if (arr0 == 13)
sin_c = lerp(sinValues[13], sinValues[14], weight);
else if (arr0 == 14)
sin_c = lerp(sinValues[14], sinValues[15], weight);
else if (arr0 == 15)
sin_c = lerp(sinValues[15], sinValues[16], weight);
else if (arr0 == 16)
sin_c = sinValues[16];
gl_FragColor = vec4(0.5 * sin_c + 0.5, 0.0, 0.0, 1.0);
}
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