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/*=========================================================================
Program: Visualization Toolkit
Module: vtkWindowLevelLookupTable.cxx
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
#include "vtkWindowLevelLookupTable.h"
#include "vtkObjectFactory.h"
#include <math.h>
vtkStandardNewMacro(vtkWindowLevelLookupTable);
//----------------------------------------------------------------------------
vtkWindowLevelLookupTable::vtkWindowLevelLookupTable(int sze, int ext)
: vtkLookupTable(sze, ext)
{
this->Level = (this->TableRange[0] + this->TableRange[1])/2;
this->Window = (this->TableRange[1] - this->TableRange[0]);
this->InverseVideo = 0;
this->MinimumTableValue[0] = 0.0;
this->MinimumTableValue[1] = 0.0;
this->MinimumTableValue[2] = 0.0;
this->MinimumTableValue[3] = 1.0;
this->MaximumTableValue[0] = 1.0;
this->MaximumTableValue[1] = 1.0;
this->MaximumTableValue[2] = 1.0;
this->MaximumTableValue[3] = 1.0;
}
//----------------------------------------------------------------------------
// Table is built as a linear ramp between MinimumTableValue and
// MaximumTableValue.
void vtkWindowLevelLookupTable::Build()
{
if (this->Table->GetNumberOfTuples() < 1 ||
(this->GetMTime() > this->BuildTime &&
this->InsertTime < this->BuildTime))
{
int i, j;
unsigned char *rgba;
double start[4], incr[4];
for (j = 0; j < 4; j++)
{
start[j] = this->MinimumTableValue[j]*255;
incr[j] = ((this->MaximumTableValue[j]-this->MinimumTableValue[j]) /
(this->NumberOfColors - 1) * 255);
}
if (this->InverseVideo)
{
for (i = 0; i < this->NumberOfColors; i++)
{
rgba = this->Table->WritePointer(4*i,4);
for (j = 0; j < 4; j++)
{
rgba[j] = static_cast<unsigned char> \
(start[j] + (this->NumberOfColors - i - 1)*incr[j] + 0.5);
}
}
}
else
{
for (i = 0; i < this->NumberOfColors; i++)
{
rgba = this->Table->WritePointer(4*i,4);
for (j = 0; j < 4; j++)
{
rgba[j] = static_cast<unsigned char>(start[j] + i*incr[j] + 0.5);
}
}
}
}
this->BuildTime.Modified();
}
//----------------------------------------------------------------------------
// Reverse the color table (don't rebuild in case someone has
// been adjusting the table values by hand)
// This is a little ugly ... it might be best to remove
// SetInverseVideo altogether and just use a negative Window.
void vtkWindowLevelLookupTable::SetInverseVideo(int iv)
{
if (this->InverseVideo == iv)
{
return;
}
this->InverseVideo = iv;
if (this->Table->GetNumberOfTuples() < 1)
{
return;
}
unsigned char *rgba, *rgba2;
unsigned char tmp[4];
int i;
int n = this->NumberOfColors-1;
for (i = 0; i < this->NumberOfColors/2; i++)
{
rgba = this->Table->WritePointer(4*i,4);
rgba2 = this->Table->WritePointer(4*(n-i),4);
tmp[0]=rgba[0]; tmp[1]=rgba[1]; tmp[2]=rgba[2]; tmp[3]=rgba[3];
rgba[0]=rgba2[0]; rgba[1]=rgba2[1]; rgba[2]=rgba2[2]; rgba[3]=rgba2[3];
rgba2[0]=tmp[0]; rgba2[1]=tmp[1]; rgba2[2]=tmp[2]; rgba2[3]=tmp[3];
}
this->Modified();
}
//----------------------------------------------------------------------------
void vtkWindowLevelLookupTable::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os,indent);
os << indent << "Window: " << this->Window << "\n";
os << indent << "Level: " << this->Level << "\n";
os << indent << "InverseVideo: "
<< (this->InverseVideo ? "On\n" : "Off\n");
os << indent << "MinimumTableValue : ("
<< this->MinimumTableValue[0] << ", "
<< this->MinimumTableValue[1] << ", "
<< this->MinimumTableValue[2] << ", "
<< this->MinimumTableValue[3] << ")\n";
os << indent << "MaximumTableValue : ("
<< this->MaximumTableValue[0] << ", "
<< this->MaximumTableValue[1] << ", "
<< this->MaximumTableValue[2] << ", "
<< this->MaximumTableValue[3] << ")\n";
}
//----------------------------------------------------------------------------
// Deprecated methods:
#ifndef VTK_LEGACY_REMOVE
void vtkWindowLevelLookupTable::SetMinimumColor(int r, int g, int b, int a)
{
VTK_LEGACY_REPLACED_BODY(vtkWindowLevelLookupTable::SetMinimumColor, "VTK 5.0",
vtkWindowLevelLookupTable::SetMinimumTableValue);
this->SetMinimumTableValue(r*255.0,g*255.0,b*255.0,a*255.0);
}
void vtkWindowLevelLookupTable::SetMinimumColor(const unsigned char rgba[4])
{
VTK_LEGACY_REPLACED_BODY(vtkWindowLevelLookupTable::SetMinimumColor, "VTK 5.0",
vtkWindowLevelLookupTable::SetMinimumTableValue);
this->SetMinimumTableValue(rgba[0]*255,rgba[1]*255,rgba[2]*255,rgba[3]*255);
}
void vtkWindowLevelLookupTable::GetMinimumColor(unsigned char rgba[4])
{
VTK_LEGACY_REPLACED_BODY(vtkWindowLevelLookupTable::GetMinimumColor, "VTK 5.0",
vtkWindowLevelLookupTable::GetMinimumTableValue);
rgba[0] = int(this->MinimumTableValue[0]*255);
rgba[1] = int(this->MinimumTableValue[1]*255);
rgba[2] = int(this->MinimumTableValue[2]*255);
rgba[3] = int(this->MinimumTableValue[3]*255);
}
unsigned char *vtkWindowLevelLookupTable::GetMinimumColor()
{
VTK_LEGACY_REPLACED_BODY(vtkWindowLevelLookupTable::GetMinimumColor, "VTK 5.0",
vtkWindowLevelLookupTable::GetMinimumTableValue);
static unsigned char minimumcolor[4];
minimumcolor[0] = int(this->MinimumTableValue[0]*255);
minimumcolor[1] = int(this->MinimumTableValue[1]*255);
minimumcolor[2] = int(this->MinimumTableValue[2]*255);
minimumcolor[3] = int(this->MinimumTableValue[3]*255);
return minimumcolor;
}
void vtkWindowLevelLookupTable::SetMaximumColor(int r, int g, int b, int a)
{
VTK_LEGACY_REPLACED_BODY(vtkWindowLevelLookupTable::SetMaximumColor, "VTK 5.0",
vtkWindowLevelLookupTable::SetMaximumTableValue);
this->SetMaximumTableValue(r*255.0,g*255.0,b*255.0,a*255.0);
}
void vtkWindowLevelLookupTable::SetMaximumColor(const unsigned char rgba[4])
{
VTK_LEGACY_REPLACED_BODY(vtkWindowLevelLookupTable::SetMaximumColor, "VTK 5.0",
vtkWindowLevelLookupTable::SetMaximumTableValue);
this->SetMaximumTableValue(rgba[0]*255,rgba[1]*255,rgba[2]*255,rgba[3]*255);
}
void vtkWindowLevelLookupTable::GetMaximumColor(unsigned char rgba[4])
{
VTK_LEGACY_REPLACED_BODY(vtkWindowLevelLookupTable::GetMaximumColor, "VTK 5.0",
vtkWindowLevelLookupTable::GetMaximumTableValue);
rgba[0] = int(this->MaximumTableValue[0]*255);
rgba[1] = int(this->MaximumTableValue[1]*255);
rgba[2] = int(this->MaximumTableValue[2]*255);
rgba[3] = int(this->MaximumTableValue[3]*255);
}
unsigned char *vtkWindowLevelLookupTable::GetMaximumColor()
{
VTK_LEGACY_REPLACED_BODY(vtkWindowLevelLookupTable::GetMaximumColor, "VTK 5.0",
vtkWindowLevelLookupTable::GetMaximumTableValue);
static unsigned char maximumcolor[4];
maximumcolor[0] = int(this->MaximumTableValue[0]*255);
maximumcolor[1] = int(this->MaximumTableValue[1]*255);
maximumcolor[2] = int(this->MaximumTableValue[2]*255);
maximumcolor[3] = int(this->MaximumTableValue[3]*255);
return maximumcolor;
}
#endif
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