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Improved documentation and made the perlin noise calls a bit more robust

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This commit is contained in:
Paolo Cignoni cignoni 2008-07-08 06:54:31 +00:00
parent 8462bcb44b
commit 1b11899ae5
2 changed files with 32 additions and 37 deletions
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56
src/sampleplugins/samplefilterdyn/samplefilterdyn.cpp
View File

@ -2,7 +2,7 @@
* MeshLab o o *
* A versatile mesh processing toolbox o o *
* _ O _ *
* Copyright(C) 2005 \/)\/ *
* Copyright(C) 2004-2008 \/)\/ *
* Visual Computing Lab /\/| *
* ISTI - Italian National Research Council | *
* \ *
@ -19,19 +19,6 @@
* GNU General Public License (http://www.gnu.org/licenses/gpl.txt) *
* for more details. *
* *
****************************************************************************/
/****************************************************************************
History
$Log: samplefilter.cpp,v $
Revision 1.3 2006/11/29 00:59:20 cignoni
Cleaned plugins interface; changed useless help class into a plain string
Revision 1.2 2006/11/27 06:57:21 cignoni
Wrong way of using the __DATE__ preprocessor symbol
Revision 1.1 2006/09/25 09:24:39 e_cerisoli
add samplefilter
****************************************************************************/
#include <QtGui>
@ -94,6 +81,11 @@ const PluginInfo &ExtraSampleDynPlugin::pluginInfo()
return ai;
}
// The FilterClass describes in which generic class of filters it fits.
// This choice affect the submenu in which each filter will be placed
// In this case this sample belong to the class of filters that change the vertex colors
const MeshFilterInterface::FilterClass ExtraSampleDynPlugin::getClass(QAction *) { return MeshFilterInterface::VertexColoring; }
// 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 parmeter you need to define,
@ -101,8 +93,19 @@ const PluginInfo &ExtraSampleDynPlugin::pluginInfo()
// - 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)
//
// In this sample a couple of parameter are declared as dynamic. That means that the meshlab framework will automatically
// manage the store and restore of the mesh state during the dynamic movement of the filter.
// The pluging writer is no more burdened with the task of saving the state but has only to declare what the filter changes
// (in this case just the vertex color). When a filter is dynamic (e.g. it has a dynamic float parameter) the meshlab
// framework will automatically store that part of the state at the opening of the dialog. When the user drag the slider,
// the framework will restore the state and then simply call the apply callback of the filter.
// So from the point of view of the filter every time you have the freshly new mesh.
//
// when the user press apply the current stored state is updated.
// when the user press close the mesh state is restored to the one before the startup of the filter.
void ExtraSampleDynPlugin::initParameterSet(QAction *action,MeshModel &m, FilterParameterSet & parlst)
//void ExtraSamplePlugin::initParList(QAction *action, MeshModel &m, FilterParameterSet &parlst)
{
switch(ID(action)) {
case FP_VERTEX_COLOR_NOISE :
@ -110,6 +113,7 @@ void ExtraSampleDynPlugin::initParameterSet(QAction *action,MeshModel &m, Filter
Color4b::Black,
"BaseColor",
"The base color that is added to the mesh.");
parlst.addDynamicFloat("percentage",
0.5, 0, 1,
MeshModel::MM_VERTCOLOR,
@ -117,10 +121,10 @@ void ExtraSampleDynPlugin::initParameterSet(QAction *action,MeshModel &m, Filter
"The random color is blended with the current one with the specified alpha");
parlst.addDynamicFloat("frequency",
20, 1, 100,
20, 1, 200,
MeshModel::MM_VERTCOLOR,
"Noisy Frequency",
"The random color is blended with the current one with the specified alpha");
"The frequency of the Noise on the mesh. Higher numbers means smaller spots.");
break;
default : assert(0);
@ -128,26 +132,26 @@ void ExtraSampleDynPlugin::initParameterSet(QAction *action,MeshModel &m, Filter
}
// The Real Core Function doing the actual mesh processing.
// Move Vertex of a random quantity
// It changes the color of the mesh according to a perlin noise function
bool ExtraSampleDynPlugin::applyFilter(QAction *filter, MeshModel &m, FilterParameterSet & par, vcg::CallBackPos *cb)
{
srand(time(NULL));
const Color4b baseColor = par.getColor4b("baseColor");
const float percentage = par.getDynamicFloat("percentage");
const float frequency = par.getDynamicFloat("frequency");
const float frequency = math::Clamp(par.getDynamicFloat("frequency"),1.f,1000.f);
CMeshO::VertexIterator vi;
qDebug("Dynamic Apply percentage %f frequency %f",percentage,frequency);
float scale = frequency/m.cm.bbox.Diag() ;
//qDebug("Dynamic Apply percentage %f frequency %f",percentage,frequency);
for(vi=m.cm.vert.begin();vi!=m.cm.vert.end();++vi)
if(!(*vi).IsD())
{
float alpha = percentage * math::Abs(math::Perlin::Noise((*vi).P()[0]/frequency,(*vi).P()[1]/frequency,(*vi).P()[2]/frequency));
float alpha = percentage * (0.5f+math::Perlin::Noise((*vi).P()[0]*scale,(*vi).P()[1]*scale,(*vi).P()[2]*scale));
alpha=math::Clamp(alpha,0.0f,1.0f);
(*vi).C().lerp ( (*vi).C(), baseColor, alpha);
}
// Log function dump textual info in the lower part of the MeshLab screen.
Log(0,"Successfully displaced %i vertices",m.cm.vn);
return true;
}

13
src/sampleplugins/samplefilterdyn/samplefilterdyn.h
View File

@ -2,7 +2,7 @@
* MeshLab o o *
* A versatile mesh processing toolbox o o *
* _ O _ *
* Copyright(C) 2005 \/)\/ *
* Copyright(C) 2004-2008 \/)\/ *
* Visual Computing Lab /\/| *
* ISTI - Italian National Research Council | *
* \ *
@ -19,16 +19,6 @@
* 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 SAMPLEFILTERDYNPLUGIN_H
@ -55,6 +45,7 @@ public:
virtual bool autoDialog(QAction *) {return true;}
virtual void initParameterSet(QAction *,MeshModel &/*m*/, FilterParameterSet & /*parent*/);
virtual bool applyFilter(QAction *filter, MeshModel &m, FilterParameterSet & /*parent*/, vcg::CallBackPos * cb) ;
virtual const FilterClass getClass(QAction *);
};
#endif