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Cloned library of VTK-5.0.0 with extra build files for internal package management.
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VTK-5.0.0/Graphics/vtkTextSource.cxx

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/*=========================================================================
Program: Visualization Toolkit
Module: $RCSfile: vtkTextSource.cxx,v $
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 "vtkTextSource.h"
#include "vtkCellArray.h"
#include "vtkInformation.h"
#include "vtkInformationVector.h"
#include "vtkObjectFactory.h"
#include "vtkPointData.h"
#include "vtkPoints.h"
#include "vtkPolyData.h"
#include "vtkUnsignedCharArray.h"
vtkCxxRevisionMacro(vtkTextSource, "$Revision: 1.50 $");
vtkStandardNewMacro(vtkTextSource);
#define vtkfont_width 9
#define vtkfont_row_width 864
#define vtkfont_height 15
static unsigned char vtkfont_bits[] = {
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};
// Construct object with no string set and backing enabled.
vtkTextSource::vtkTextSource()
{
this->Text = NULL;
this->Backing = 1;
this->ForegroundColor[0] = 1.0;
this->ForegroundColor[1] = 1.0;
this->ForegroundColor[2] = 1.0;
this->ForegroundColor[3] = 1.0;
this->BackgroundColor[0] = 0.0;
this->BackgroundColor[1] = 0.0;
this->BackgroundColor[2] = 0.0;
this->BackgroundColor[3] = 1.0;
this->SetNumberOfInputPorts(0);
}
vtkTextSource::~vtkTextSource()
{
if (this->Text)
{
delete [] this->Text;
}
}
int vtkTextSource::RequestData(
vtkInformation *vtkNotUsed(request),
vtkInformationVector **vtkNotUsed(inputVector),
vtkInformationVector *outputVector)
{
// get the info object
vtkInformation *outInfo = outputVector->GetInformationObject(0);
// get the ouptut
vtkPolyData *output = vtkPolyData::SafeDownCast(
outInfo->Get(vtkDataObject::DATA_OBJECT()));
int row, col;
vtkPoints *newPoints;
vtkCellArray *newPolys;
vtkUnsignedCharArray *newScalars;
double x[3];
int pos = 0;
int pixelPos;
vtkIdType pts[5];
vtkIdType numPolys = 0;
int acol;
int drawingWhite = 0;
int drawingBlack = 0;
unsigned char white[4];
unsigned char black[4];
if (this->Text == NULL)
{
vtkErrorMacro (<< "Text is not set!");
return 1;
}
// convert colors to unsigned char
for (int i = 0; i < 4; i++)
{
white[i] = (unsigned char) (this->ForegroundColor[i] * 255.0);
black[i] = (unsigned char) (this->BackgroundColor[i] * 255.0);
}
// Set things up; allocate memory
x[2] = 0;
newPoints = vtkPoints::New();
newPolys = vtkCellArray::New();
newScalars = vtkUnsignedCharArray::New();
newScalars->SetNumberOfComponents(4);
// Create Text
while (this->Text[pos])
{
if (this->Text[pos] != 32)
{
for (col = 0; col < vtkfont_width; col++)
{
acol = (this->Text[pos] - 32)*vtkfont_width + col - 1;
for (row = 0; row < vtkfont_height; row++)
{
pixelPos = acol + row*vtkfont_row_width;
if (vtkfont_bits[pixelPos/8] & (0x01 << pixelPos%8))
{
if (drawingBlack)
{
x[0] = pos*vtkfont_width + col + 1;
x[1] = vtkfont_height - row;
newPoints->InsertNextPoint(x);
newScalars->InsertNextValue(black[0]);
newScalars->InsertNextValue(black[1]);
newScalars->InsertNextValue(black[2]);
newScalars->InsertNextValue(black[3]);
x[0] = pos*vtkfont_width + col;
x[1] = vtkfont_height - row;
newPoints->InsertNextPoint(x);
newScalars->InsertNextValue(black[0]);
newScalars->InsertNextValue(black[1]);
newScalars->InsertNextValue(black[2]);
newScalars->InsertNextValue(black[3]);
pts[0] = numPolys*4;
pts[1] = numPolys*4 + 1;
pts[2] = numPolys*4 + 2;
pts[3] = numPolys*4 + 3;
newPolys->InsertNextCell(4,pts);
numPolys++;
drawingBlack = 0;
}
if (!drawingWhite)
{
x[0] = pos*vtkfont_width + col;
x[1] = vtkfont_height - row;
newPoints->InsertNextPoint(x);
newScalars->InsertNextValue(white[0]);
newScalars->InsertNextValue(white[1]);
newScalars->InsertNextValue(white[2]);
newScalars->InsertNextValue(white[3]);
x[0] = pos*vtkfont_width + col + 1;
x[1] = vtkfont_height - row;
newPoints->InsertNextPoint(x);
newScalars->InsertNextValue(white[0]);
newScalars->InsertNextValue(white[1]);
newScalars->InsertNextValue(white[2]);
newScalars->InsertNextValue(white[3]);
drawingWhite = 1;
}
}
// if the pixel is not set the close up the rectangle
else
{
if (drawingWhite)
{
x[0] = pos*vtkfont_width + col + 1;
x[1] = vtkfont_height - row;
newPoints->InsertNextPoint(x);
newScalars->InsertNextValue(white[0]);
newScalars->InsertNextValue(white[1]);
newScalars->InsertNextValue(white[2]);
newScalars->InsertNextValue(white[3]);
x[0] = pos*vtkfont_width + col;
x[1] = vtkfont_height - row;
newPoints->InsertNextPoint(x);
newScalars->InsertNextValue(white[0]);
newScalars->InsertNextValue(white[1]);
newScalars->InsertNextValue(white[2]);
newScalars->InsertNextValue(white[3]);
pts[0] = numPolys*4;
pts[1] = numPolys*4 + 1;
pts[2] = numPolys*4 + 2;
pts[3] = numPolys*4 + 3;
newPolys->InsertNextCell(4,pts);
numPolys++;
drawingWhite = 0;
}
if (!drawingBlack && this->Backing)
{
x[0] = pos*vtkfont_width + col;
x[1] = vtkfont_height - row;
newPoints->InsertNextPoint(x);
newScalars->InsertNextValue(black[0]);
newScalars->InsertNextValue(black[1]);
newScalars->InsertNextValue(black[2]);
newScalars->InsertNextValue(black[3]);
x[0] = pos*vtkfont_width + col + 1;
x[1] = vtkfont_height - row;
newPoints->InsertNextPoint(x);
newScalars->InsertNextValue(black[0]);
newScalars->InsertNextValue(black[1]);
newScalars->InsertNextValue(black[2]);
newScalars->InsertNextValue(black[3]);
drawingBlack = 1;
}
}
}
// if we finished up a row but are still drawing close it up
if (drawingWhite)
{
x[0] = pos*vtkfont_width + col + 1;
x[1] = 0;
newPoints->InsertNextPoint(x);
newScalars->InsertNextValue(white[0]);
newScalars->InsertNextValue(white[1]);
newScalars->InsertNextValue(white[2]);
newScalars->InsertNextValue(white[3]);
x[0] = pos*vtkfont_width + col;
x[1] = 0;
newPoints->InsertNextPoint(x);
newScalars->InsertNextValue(white[0]);
newScalars->InsertNextValue(white[1]);
newScalars->InsertNextValue(white[2]);
newScalars->InsertNextValue(white[3]);
pts[0] = numPolys*4;
pts[1] = numPolys*4 + 1;
pts[2] = numPolys*4 + 2;
pts[3] = numPolys*4 + 3;
newPolys->InsertNextCell(4,pts);
numPolys++;
drawingWhite = 0;
}
if (drawingBlack)
{
x[0] = pos*vtkfont_width + col + 1;
x[1] = 0;
newPoints->InsertNextPoint(x);
newScalars->InsertNextValue(black[0]);
newScalars->InsertNextValue(black[1]);
newScalars->InsertNextValue(black[2]);
newScalars->InsertNextValue(black[3]);
x[0] = pos*vtkfont_width + col;
x[1] = 0;
newPoints->InsertNextPoint(x);
newScalars->InsertNextValue(black[0]);
newScalars->InsertNextValue(black[1]);
newScalars->InsertNextValue(black[2]);
newScalars->InsertNextValue(black[3]);
pts[0] = numPolys*4;
pts[1] = numPolys*4 + 1;
pts[2] = numPolys*4 + 2;
pts[3] = numPolys*4 + 3;
newPolys->InsertNextCell(4,pts);
numPolys++;
drawingBlack = 0;
}
}
}
else
{
// draw a black square for a space
if (this->Backing)
{
x[0] = pos*vtkfont_width;
x[1] = vtkfont_height;
newPoints->InsertNextPoint(x);
newScalars->InsertNextValue(black[0]);
newScalars->InsertNextValue(black[1]);
newScalars->InsertNextValue(black[2]);
newScalars->InsertNextValue(black[3]);
x[0] = pos*vtkfont_width + vtkfont_width;
x[1] = vtkfont_height;
newPoints->InsertNextPoint(x);
newScalars->InsertNextValue(black[0]);
newScalars->InsertNextValue(black[1]);
newScalars->InsertNextValue(black[2]);
newScalars->InsertNextValue(black[3]);
x[0] = pos*vtkfont_width + vtkfont_width;
x[1] = 0;
newPoints->InsertNextPoint(x);
newScalars->InsertNextValue(black[0]);
newScalars->InsertNextValue(black[1]);
newScalars->InsertNextValue(black[2]);
newScalars->InsertNextValue(black[3]);
x[0] = pos*vtkfont_width;
x[1] = 0;
newPoints->InsertNextPoint(x);
newScalars->InsertNextValue(black[0]);
newScalars->InsertNextValue(black[1]);
newScalars->InsertNextValue(black[2]);
newScalars->InsertNextValue(black[3]);
pts[0] = numPolys*4;
pts[1] = numPolys*4 + 1;
pts[2] = numPolys*4 + 2;
pts[3] = numPolys*4 + 3;
newPolys->InsertNextCell(4,pts);
numPolys++;
}
}
pos++;
}
//
// Update ourselves and release memory
//
output->SetPoints(newPoints);
newPoints->Delete();
output->GetPointData()->SetScalars(newScalars);
newScalars->Delete();
output->SetPolys(newPolys);
newPolys->Delete();
return 1;
}
void vtkTextSource::PrintSelf(ostream& os, vtkIndent indent)
{
this->Superclass::PrintSelf(os,indent);
os << indent << "Text: " << (this->Text ? this->Text : "(none)") << "\n";
os << indent << "Background Drawn: " << (this->Backing ? "On\n" : "Off\n");
os << indent << "ForegroundColor: (" << this->ForegroundColor[0] << ", "
<< this->ForegroundColor[1] << ", " << this->ForegroundColor[2] << ")\n";
os << indent << "BackgroundColor: (" << this->BackgroundColor[0] << ", "
<< this->BackgroundColor[1] << ", " << this->BackgroundColor[2] << ")\n";
}