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45 lines
1.8 KiB
45 lines
1.8 KiB
/******************************************************************** |
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KWin - the KDE window manager |
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This file is part of the KDE project. |
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Copyright (C) 2008 Martin Gräßlin <ubuntu@martin-graesslin.com> |
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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You should have received a copy of the GNU General Public License |
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along with this program. If not, see <http://www.gnu.org/licenses/>. |
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*********************************************************************/ |
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uniform float width; |
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uniform float height; |
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uniform float cubeAngle; |
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uniform float xCoord; |
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uniform float yCoord; |
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uniform float timeLine; |
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void main() |
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{ |
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gl_TexCoord[0].xy = gl_Vertex.xy; |
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vec3 vertex = vec3( gl_Vertex.xy - vec2( width*0.5 - xCoord, height*0.5 - yCoord ), gl_Vertex.z ); |
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float radian = radians(cubeAngle*0.5); |
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float radius = (width*0.5)/cos(radian); |
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float zenithAngle = acos( vertex.y/radius ); |
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float azimuthAngle = asin( vertex.x/radius ); |
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vertex.z = radius * sin( zenithAngle ) * cos( azimuthAngle ) - radius*cos( radians( 90.0 - cubeAngle*0.5 ) ); |
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vertex.x = radius * sin( zenithAngle ) * sin( azimuthAngle ); |
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vertex.xy += vec2( width*0.5 - xCoord, height*0.5 - yCoord ); |
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vec3 diff = (gl_Vertex.xyz - vertex.xyz)*timeLine; |
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vertex.xyz += diff; |
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gl_Position = gl_ModelViewProjectionMatrix * vec4( vertex, 1.0 ); |
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gl_FrontColor = gl_Color; |
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}
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