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// -----------------------------------------------------------------------------
// Copyright (c) 2014, Nicolas P. Rougier. All Rights Reserved.
// Distributed under the (new) BSD License.
// -----------------------------------------------------------------------------
#include "math/constants.glsl"
float marker_triangle(vec2 P, float size)
{
float x = M_SQRT2/2.0 * (P.x - (P.y-size/6));
float y = M_SQRT2/2.0 * (P.x + (P.y-size/6));
float r1 = max(abs(x), abs(y)) - size/(2.0*M_SQRT2);
float r2 = P.y-size/6;
return max(r1,r2);
}
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