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89 lines
3.2 KiB
C++
89 lines
3.2 KiB
C++
/*=========================================================================
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Program: Visualization Toolkit
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Module: vtkOpenGLModelViewProjectionMonitor
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Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
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All rights reserved.
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See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
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This software is distributed WITHOUT ANY WARRANTY; without even
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the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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PURPOSE. See the above copyright notice for more information.
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=========================================================================*/
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#include "vtkOpenGLModelViewProjectionMonitor.h"
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#include "vtkObjectFactory.h"
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#include "vtkgl.h"
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#include <cstring>
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#include <cmath>
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//-----------------------------------------------------------------------------
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vtkStandardNewMacro(vtkOpenGLModelViewProjectionMonitor)
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//-----------------------------------------------------------------------------
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void vtkOpenGLModelViewProjectionMonitor::Initialize()
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{
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memset(this->Projection,0,16*sizeof(float));
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memset(this->ModelView,0,16*sizeof(float));
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}
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//-----------------------------------------------------------------------------
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#define vtkOpenGLModelViewProjectionMonitorSetVectorMacro(_name, _n) \
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void vtkOpenGLModelViewProjectionMonitor::Set##_name(float *val) \
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{ \
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int changed = 0; \
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for (int i=0; i<_n; ++i) \
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{ \
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if ( fabs( val[i] - this->_name[i] ) > 1e-5f ) \
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{ \
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changed=1; \
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this->_name[i] = val[i]; \
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} \
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} \
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if ( changed ) \
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{ \
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this->UpTime += 1; \
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} \
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}
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vtkOpenGLModelViewProjectionMonitorSetVectorMacro(Projection, 16)
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vtkOpenGLModelViewProjectionMonitorSetVectorMacro(ModelView, 16)
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//-----------------------------------------------------------------------------
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void vtkOpenGLModelViewProjectionMonitor::Update()
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{
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GLfloat matrix[16];
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glGetFloatv(GL_PROJECTION_MATRIX, matrix);
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this->SetProjection(matrix);
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glGetFloatv(GL_MODELVIEW_MATRIX, matrix);
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this->SetModelView(matrix);
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}
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//-----------------------------------------------------------------------------
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bool vtkOpenGLModelViewProjectionMonitor::StateChanged()
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{
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long long oldUpTime = this->UpTime;
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this->Update();
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return (this->UpTime != oldUpTime);
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}
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//-----------------------------------------------------------------------------
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void vtkOpenGLModelViewProjectionMonitor::PrintSelf(ostream &os, vtkIndent indent)
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{
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this->Superclass::PrintSelf(os,indent);
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os << indent << "Projection=";
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for (int q=0; q<16; ++q)
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{
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os << this->Projection[q] << " ";
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}
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os << endl;
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os << indent << "ModelView=";
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for (int q=0; q<16; ++q)
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{
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os << this->ModelView[q] << " ";
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}
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os << endl;
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os << indent << "UpTime=" << this->UpTime << endl;
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}
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