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20 lines
613 B
GLSL
20 lines
613 B
GLSL
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uniform vec2 storm_position;
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uniform float storm_total_radius;
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uniform float storm_inner_radius;
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void main()
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{
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vec4 vertex = gl_ModelViewMatrix * gl_Vertex;
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vec2 offset = vertex.xy - storm_position;
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float len = length(offset);
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if (len < storm_total_radius)
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{
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float push_distance = storm_inner_radius + len / storm_total_radius * (storm_total_radius - storm_inner_radius);
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vertex.xy = storm_position + normalize(offset) * push_distance;
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}
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gl_Position = gl_ProjectionMatrix * vertex;
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gl_TexCoord[0] = gl_TextureMatrix[0] * gl_MultiTexCoord0;
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gl_FrontColor = gl_Color;
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}
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