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a useless filter added to show how to work with a gl context inside a filter

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Guido Ranzuglia granzuglia 2010-10-07 16:20:28 +00:00
parent ad82e94100
commit f652f5f284
3 changed files with 198 additions and 0 deletions
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129
src/sampleplugins/sample_filtergpu/sample_filtergpu.cpp Normal file
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/****************************************************************************
* MeshLab o o *
* A versatile mesh processing toolbox o o *
* _ O _ *
* Copyright(C) 2005 \/)\/ *
* Visual Computing Lab /\/| *
* ISTI - Italian National Research Council | *
* \ *
* All rights reserved. *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License (http://www.gnu.org/licenses/gpl.txt) *
* for more details. *
* *
****************************************************************************/
#include "samplefiltergpu.h"
#include <QtScript>
#include <QGLFramebufferObject>
#include <QImage>
// Constructor usually performs only two simple tasks of filling the two lists
// - typeList: with all the possible id of the filtering actions
// - actionList with the corresponding actions. If you want to add icons to your filtering actions you can do here by construction the QActions accordingly
ExtraSampleGPUPlugin::ExtraSampleGPUPlugin()
{
typeList << FP_GPU_EXAMPLE;
foreach(FilterIDType tt , types())
actionList << new QAction(filterName(tt), this);
}
// ST() must return the very short string describing each filtering action
// (this string is used also to define the menu entry)
QString ExtraSampleGPUPlugin::filterName(FilterIDType filterId) const
{
switch(filterId) {
case FP_GPU_EXAMPLE : return QString("GPU Filter Example ");
default : assert(0);
}
return QString();
}
// Info() must return the longer string describing each filtering action
// (this string is used in the About plugin dialog)
QString ExtraSampleGPUPlugin::filterInfo(FilterIDType filterId) const
{
switch(filterId) {
case FP_GPU_EXAMPLE : return QString("Small useless filter added only to show how to work with a gl render context inside a filter.");
default : assert(0);
}
return QString("Unknown Filter");
}
// The FilterClass describes in which generic class of filters it fits.
// This choice affect the submenu in which each filter will be placed
// More than a single class can be choosen.
ExtraSampleGPUPlugin::FilterClass ExtraSampleGPUPlugin::getClass(QAction *a)
{
switch(ID(a))
{
case FP_GPU_EXAMPLE : return MeshFilterInterface::Generic;
default : assert(0);
}
return MeshFilterInterface::Generic;
}
// This function define the needed parameters for each filter. Return true if the filter has some parameters
// it is called every time, so you can set the default value of parameters according to the mesh
// For each parameter you need to define,
// - the name of the parameter,
// - the string shown in the dialog
// - the default value
// - a possibly long string describing the meaning of that parameter (shown as a popup help in the dialog)
void ExtraSampleGPUPlugin::initParameterSet(QAction *action,MeshModel &m, RichParameterSet & parlst)
{
switch(ID(action))
{
case FP_GPU_EXAMPLE :
{
QColor col(100,50,240);
parlst.addParam(new RichColor ("ClearColor",col,"Clear Color","Color used to clear the gl color buffer."));
parlst.addParam(new RichBool ("LogFBOBuffer",false,"Log FBOBuffer","Produce a log of the current FBO status in the Layer Log window."));
break;
}
default : assert(0);
}
}
// The Real Core Function doing the actual mesh processing.
// Move Vertex of a random quantity
bool ExtraSampleGPUPlugin::applyFilter(QAction * a, MeshDocument &/*md*/, RichParameterSet & par, vcg::CallBackPos */*cb*/)
{
switch(ID(a))
{
case FP_GPU_EXAMPLE :
{
glContext->makeCurrent();
QSize fbosize(4,4);
QGLFramebufferObject fbo(fbosize);
QColor clcolor = par.getColor("ClearColor");
fbo.bind();
glClearColor(clcolor.redF(),clcolor.greenF(),clcolor.blueF(),1.0f);
glClear(GL_COLOR_BUFFER_BIT);
fbo.release();
if (par.getBool("LogFBOBuffer"))
{
QImage img(fbo.toImage());
for(int ii = 0; ii < fbosize.height() * fbosize.width();++ii)
this->Log("Pixel[%d][%d] = [%f,%f,%f]",ii / fbosize.height(),ii % fbosize.height(),clcolor.redF(),clcolor.greenF(),clcolor.blueF());
}
glContext->doneCurrent();
break;
}
}
return true;
}
Q_EXPORT_PLUGIN(ExtraSampleGPUPlugin)

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src/sampleplugins/sample_filtergpu/sample_filtergpu.h Normal file
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/****************************************************************************
* MeshLab o o *
* A versatile mesh processing toolbox o o *
* _ O _ *
* Copyright(C) 2005 \/)\/ *
* Visual Computing Lab /\/| *
* ISTI - Italian National Research Council | *
* \ *
* All rights reserved. *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License (http://www.gnu.org/licenses/gpl.txt) *
* for more details. *
* *
****************************************************************************/
/****************************************************************************
History
$Log: sampleplugins.h,v $
Revision 1.2 2006/11/29 00:59:21 cignoni
Cleaned plugins interface; changed useless help class into a plain string
Revision 1.1 2006/09/25 09:24:39 e_cerisoli
add sampleplugins
****************************************************************************/
#ifndef SAMPLEFILTERGPUPLUGIN_H
#define SAMPLEFILTERGPUPLUGIN_H
#include <QObject>
#include <common/interfaces.h>
class QScriptEngine;
class ExtraSampleGPUPlugin : public QObject, public MeshFilterInterface
{
Q_OBJECT
Q_INTERFACES(MeshFilterInterface)
public:
enum { FP_GPU_EXAMPLE } ;
ExtraSampleGPUPlugin();
virtual QString pluginName(void) const { return "ExtraSampleGPUPlugin"; }
void initParameterSet(QAction *action,MeshModel &m, RichParameterSet & parlst);
QString filterName(FilterIDType filter) const;
QString filterInfo(FilterIDType filter) const;
bool applyFilter(QAction *filter, MeshDocument &md, RichParameterSet & /*parent*/, vcg::CallBackPos * cb) ;
FilterClass getClass(QAction *a);
};
#endif

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src/sampleplugins/sample_filtergpu/sample_filtergpu.pro Normal file
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include (../../shared.pri)
HEADERS += sample_filtergpu.h
SOURCES += sample_filtergpu.cpp \
TARGET = sample_filtergpu