218 lines
7.4 KiB
C++
218 lines
7.4 KiB
C++
/********************************************************************
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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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#include "cube.h"
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#include "sphere.h"
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#include <kdebug.h>
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#include <KStandardDirs>
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#include <kconfiggroup.h>
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#include <math.h>
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#include <GL/gl.h>
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namespace KWin
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{
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KWIN_EFFECT( sphere, SphereEffect )
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KWIN_EFFECT_SUPPORTED( sphere, SphereEffect::supported() )
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SphereEffect::SphereEffect()
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: CubeEffect()
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, mInited( false )
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, mValid( true )
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, mShader( 0 )
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{
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if( wallpaper )
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wallpaper->discard();
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reconfigure( ReconfigureAll );
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}
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SphereEffect::~SphereEffect()
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{
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delete mShader;
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}
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void SphereEffect::reconfigure( ReconfigureFlags )
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{
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loadConfig( "Sphere" );
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reflection = false;
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animateDesktopChange = false;
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KConfigGroup conf = effects->effectConfig( "Sphere" );
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zPosition = conf.readEntry( "ZPosition", 450.0 );
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capDeformationFactor = conf.readEntry( "CapDeformation", 0 )/100.0f;
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bigCube = true;
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}
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bool SphereEffect::supported()
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{
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return GLShader::fragmentShaderSupported() &&
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(effects->compositingType() == OpenGLCompositing);
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}
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bool SphereEffect::loadData()
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{
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mInited = true;
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QString fragmentshader = KGlobal::dirs()->findResource("data", "kwin/cylinder.frag");
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QString vertexshader = KGlobal::dirs()->findResource("data", "kwin/sphere.vert");
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if( fragmentshader.isEmpty() || vertexshader.isEmpty() )
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{
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kError() << "Couldn't locate shader files" << endl;
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return false;
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}
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mShader = new GLShader( vertexshader, fragmentshader );
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if( !mShader->isValid() )
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{
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kError() << "The shader failed to load!" << endl;
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return false;
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}
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else
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{
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mShader->bind();
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mShader->setUniform( "winTexture", 0 );
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mShader->setUniform( "opacity", cubeOpacity );
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QRect rect = effects->clientArea( FullScreenArea, activeScreen, effects->currentDesktop());
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if( effects->numScreens() > 1 && (slide || bigCube ) )
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rect = effects->clientArea( FullArea, activeScreen, effects->currentDesktop() );
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mShader->setUniform( "width", (float)rect.width() );
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mShader->setUniform( "height", (float)rect.height() );
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mShader->unbind();
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}
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return true;
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}
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void SphereEffect::prePaintWindow( EffectWindow* w, WindowPrePaintData& data, int time )
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{
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if( activated )
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{
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if( cube_painting )
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{
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if( w->isOnDesktop( painting_desktop ))
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{
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data.quads = data.quads.makeGrid( 40 );
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QRect rect = effects->clientArea( FullArea, activeScreen, painting_desktop );
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if( w->x() < rect.width()/2 && w->x() + w->width() > rect.width()/ 2 )
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data.quads = data.quads.splitAtX( rect.width()/2 - w->x() );
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w->enablePainting( EffectWindow::PAINT_DISABLED_BY_DESKTOP );
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}
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else
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{
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w->disablePainting( EffectWindow::PAINT_DISABLED_BY_DESKTOP );
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}
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}
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}
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effects->prePaintWindow( w, data, time );
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}
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void SphereEffect::paintWindow( EffectWindow* w, int mask, QRegion region, WindowPaintData& data )
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{
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if( activated && cube_painting )
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{
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if( mValid && !mInited )
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mValid = loadData();
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bool useShader = mValid;
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if( useShader )
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{
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mShader->bind();
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mShader->setUniform( "windowWidth", (float)w->width() );
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mShader->setUniform( "windowHeight", (float)w->height() );
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mShader->setUniform( "xCoord", (float)w->x() );
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mShader->setUniform( "yCoord", (float)w->y() );
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mShader->setUniform( "cubeAngle", (effects->numberOfDesktops() - 2 )/(float)effects->numberOfDesktops() * 180.0f );
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data.shader = mShader;
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}
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CubeEffect::paintWindow( w, mask, region, data );
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if( useShader )
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{
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mShader->unbind();
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}
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}
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else
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effects->paintWindow( w, mask, region, data );
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}
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void SphereEffect::paintCap( float z, float zTexture )
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{
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if( bottomCap )
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{
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glPushMatrix();
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glScalef( 1.0, -1.0, 1.0 );
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}
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CubeEffect::paintCap( z, zTexture );
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if( bottomCap )
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glPopMatrix();
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}
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void SphereEffect::paintCapStep( float z, float zTexture, bool texture )
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{
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QRect rect = effects->clientArea( FullArea, activeScreen, painting_desktop );
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float cubeAngle = (effects->numberOfDesktops() - 2 )/(float)effects->numberOfDesktops() * 180.0f;
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float radius = (rect.width()*0.5)/cos(cubeAngle*0.5*M_PI/180.0);
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float angle = acos( (rect.height()*0.5)/radius )*180.0/M_PI;
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angle /= 30;
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if( texture )
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capTexture->bind();
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glPushMatrix();
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glTranslatef( 0.0, -rect.height()*0.5, 0.0 );
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glBegin( GL_QUADS );
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for( int i=0; i<30; i++ )
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{
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float topAngle = angle*i*M_PI/180.0;
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float bottomAngle = angle*(i+1)*M_PI/180.0;
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float yTop = rect.height() - radius * cos( topAngle );
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yTop -= (yTop-rect.height()*0.5)*capDeformationFactor;
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float yBottom = rect.height() -radius * cos( bottomAngle );
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yBottom -= (yBottom-rect.height()*0.5)*capDeformationFactor;
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for( int j=0; j<36; j++ )
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{
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float x = radius * sin( topAngle ) * sin( (90.0+j*10.0)*M_PI/180.0 );
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float z = radius * sin( topAngle ) * cos( (90.0+j*10.0)*M_PI/180.0 );
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if( texture )
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glTexCoord2f( x/(rect.width())+0.5, 0.5 - z/zTexture * 0.5 );
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glVertex3f( x, yTop, z );
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x = radius * sin( bottomAngle ) * sin( (90.0+j*10.0)*M_PI/180.00 );
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z = radius * sin( bottomAngle ) * cos( (90.0+j*10.0)*M_PI/180.0 );
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if( texture )
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glTexCoord2f( x/(rect.width())+0.5, 0.5 - z/zTexture * 0.5 );
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glVertex3f( x, yBottom, z );
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x = radius * sin( bottomAngle ) * sin( (90.0+(j+1)*10.0)*M_PI/180.0 );
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z = radius * sin( bottomAngle ) * cos( (90.0+(j+1)*10.0)*M_PI/180.0 );
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if( texture )
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glTexCoord2f( x/(rect.width())+0.5, 0.5 - z/zTexture * 0.5 );
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glVertex3f( x, yBottom, z );
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x = radius * sin( topAngle ) * sin( (90.0+(j+1)*10.0)*M_PI/180.0 );
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z = radius * sin( topAngle ) * cos( (90.0+(j+1)*10.0)*M_PI/180.0 );
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if( texture )
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glTexCoord2f( x/(rect.width())+0.5, 0.5 - z/zTexture * 0.5 );
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glVertex3f( x, yTop, z );
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}
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}
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glEnd();
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glPopMatrix();
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if( texture )
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{
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capTexture->unbind();
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}
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}
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} // namespace
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