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From Neil Salter, added osgSim::SphereSegment and osgSim::ScalarBar, and

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osgspheresegment and osgscalarbar, and osgsimulation examples.
This commit is contained in:
Robert Osfield
2003-09-01 09:36:03 +00:00
parent 5400f8293b
commit 144ac14b07
25 changed files with 3214 additions and 5 deletions
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38
src/osgSim/ColorRange.cpp Normal file
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#include <osgSim/ColorRange>
using namespace osgSim;
ColorRange::ColorRange(float min, float max, const std::vector<osg::Vec4>& colors): ScalarsToColors(min,max)
{
setColors(colors);
};
void ColorRange::setColors(const std::vector<osg::Vec4>& colors)
{
if(colors.size()>1)
{
_colors=colors;
}
else
{
// Default to something sensible
_colors.push_back(osg::Vec4(1.0,0.0,0.0,1.0)); // R
_colors.push_back(osg::Vec4(1.0,1.0,0.0,1.0)); // Y
_colors.push_back(osg::Vec4(0.0,1.0,0.0,1.0)); // G
_colors.push_back(osg::Vec4(0.0,1.0,1.0,1.0)); // C
_colors.push_back(osg::Vec4(0.0,0.0,1.0,1.0)); // B
}
}
osg::Vec4 ColorRange::getColor(float scalar) const
{
if(scalar<getMin()) return _colors.front();
if(scalar>getMax()) return _colors.back();
float r = ((scalar - getMin())/(getMax() - getMin())) * (_colors.size()-1);
int lower = static_cast<int>(floor(r));
int upper = static_cast<int>(ceil(r));
osg::Vec4 color = _colors[lower] + ((_colors[upper] - _colors[lower]) * (r-lower));
return color;
}