/*!
Build a color map with two stops at 0.0 and 1.0.
\param color1 Color used for the minimum value of the value interval
\param color2 Color used for the maximum value of the value interval
\param format Preferred format of the coor map
*/
LinearTransparentColorMap::LinearTransparentColorMap(const QColor& color1,
const QColor& color2, QwtColorMap::Format format) : QwtColorMap(format)
{
d_data = new PrivateData;
d_data->mode = ScaledColors;
setColorInterval(color1, color2);
}
/*!
Build a color map with two stops at 0.0 and 1.0. The color
at 0.0 is Qt::blue, at 1.0 it is Qt::yellow.
\param format Preferred format of the color map
*/
LinearTransparentColorMap::LinearTransparentColorMap(QwtColorMap::Format format) : QwtColorMap(format)
{
d_data = new PrivateData;
d_data->mode = ScaledColors;
setColorInterval(Qt::blue, Qt::yellow);
}
ColorMap::ColorMap(int colormap)
{
// enum ColorMapForPlot {bluered = 1, blackwhite = 2};
switch (colormap)
{
case 1:
setColorInterval(Qt::darkBlue, Qt::darkRed);
addColorStop(0.2, Qt::blue);
addColorStop(0.4, Qt::cyan);
addColorStop(0.6, Qt::yellow);
addColorStop(0.8, Qt::red);
break;
case 2:
setColorInterval(Qt::black, Qt::white);
break;
case 3:
setColorInterval(QColor(0,0,0),QColor(0,255,255));
break;
default:
setColorInterval(Qt::darkBlue, Qt::darkRed);
}
}
void FloodPlotColorMap::init()
{
/// set color stops
/// scale between 0 and 1
unsigned int colormapLength = m_colorLevels.size(); // start and end colors
int r, g, b;
unsigned int i,j;
QColor minColor, maxColor; // colors at interval ends
double min = openstudio::minimum(m_colorLevels);
double max = openstudio::maximum(m_colorLevels);
if (max == min)
{
return;
}
switch (m_colorMap)
{
case Gray:
double gray;
minColor = QColor(0,0,0);
maxColor = QColor(255,255,255);
setColorInterval(minColor, maxColor); // end points
for (i = 0; i < colormapLength; i++)
{
gray = 1.0 * i / (colormapLength - 1);
r = (int)(255 * gray);
g = (int)(255 * gray);
b = (int)(255 * gray);
addColorStop( (m_colorLevels(i) - min) / (max - min), QColor(r, g, b));
}
break;
case Jet:
Matrix cMatrix(colormapLength,3);
unsigned int n = (int)ceil(colormapLength / 4.0);
int nMod = 0;
Vector fArray(3 * n - 1);
Vector red(fArray.size());
Vector green(fArray.size());
Vector blue(fArray.size());
for (i = 0; i < colormapLength; i++)
{
cMatrix(i, 0) = 0;
cMatrix(i, 1) = 0;
cMatrix(i, 2) = 0;
}
if (colormapLength % 4 == 1)
{
nMod = 1;
}
for (i = 0; i <fArray.size(); i++)
{
if (i < n)
fArray(i) = (float)(i + 1) / n;
else if (i >= n && i < 2 * n - 1)
fArray(i) = 1.0;
else if (i >= 2 * n - 1)
fArray(i) = (float)(3 * n - 1 - i) / n;
green(i) = (int)ceil(n / 2.0) - nMod + i;
red(i) = green(i) + n;
blue(i) = green(i) - n;
}
int nb = 0;
for (i = 0; i < blue.size(); i++)
{
if (blue(i) > 0)
nb++;
}
for (i = 0; i < colormapLength; i++)
{
for (j = 0; j < red.size(); j++)
{
if (i == red(j) && red(j) < colormapLength)
{
cMatrix(i, 0) = fArray(i - red(0));
}
}
for (j = 0; j < green.size(); j++)
{
if (i == green(j) && green(j) < colormapLength)
cMatrix(i, 1) = fArray(i - (int)green(0));
}
for ( j = 0; j < blue.size(); j++)
{
if (i == blue(j) && blue(j) >= 0)
cMatrix(i, 2) = fArray(fArray.size() - 1 - nb + i);
}
}
// set before adding color stops
// default from http://www.matthiaspospiech.de/blog/2008/06/16/qwt-spectrogramm-plot-with-data-arrays/
minColor = QColor(0,0,189);
maxColor = QColor(132,0,0);
int bMin=256;
int rMin=256;
for (i = 0; i < colormapLength; i++)
{
r = (int)(cMatrix(i, 0) * 255);
g = (int)(cMatrix(i, 1) * 255);
b = (int)(cMatrix(i, 2) * 255);
if ((r==0) && (g==0) && (b<bMin))
{
bMin=b;
minColor = QColor(r,g,b);
}
if ((b==0) && (g==0) && (r<rMin))
{
rMin=r;
maxColor = QColor(r,g,b);
}
}
setColorInterval(minColor, maxColor); // end points
for (i = 0; i < colormapLength; i++)
{
r = (int)(cMatrix(i, 0) * 255);
g = (int)(cMatrix(i, 1) * 255);
b = (int)(cMatrix(i, 2) * 255);
addColorStop( (m_colorLevels(i) - min) / (max - min), QColor(r, g, b));
}
break;
}
}
