86 lines
1.5 KiB
C++
86 lines
1.5 KiB
C++
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#include "osg/GL"
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#include "osg/PolygonOffset"
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#include "osg/Input"
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#include "osg/Output"
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using namespace osg;
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PolygonOffset::PolygonOffset( void )
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{
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_factor = 0.0f; // are these sensible defaut values?
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_units = 0.0f;
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}
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PolygonOffset::~PolygonOffset( void )
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{
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}
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PolygonOffset* PolygonOffset::instance()
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{
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static ref_ptr<PolygonOffset> s_PolygonOffset(new PolygonOffset);
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return s_PolygonOffset.get();
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}
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void PolygonOffset::setOffset(float factor,float units)
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{
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_factor = factor;
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_units = units;
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}
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void PolygonOffset::enable( void )
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{
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glEnable( GL_POLYGON_OFFSET_FILL);
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glEnable( GL_POLYGON_OFFSET_LINE);
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glEnable( GL_POLYGON_OFFSET_POINT);
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}
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void PolygonOffset::disable( void )
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{
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glDisable( GL_POLYGON_OFFSET_FILL);
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glDisable( GL_POLYGON_OFFSET_LINE);
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glDisable( GL_POLYGON_OFFSET_POINT);
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}
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void PolygonOffset::apply( void )
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{
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glPolygonOffset(_factor,_units);
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}
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bool PolygonOffset::readLocalData(Input& fr)
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{
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bool iteratorAdvanced = false;
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float data;
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if (fr[0].matchWord("factor") && fr[1].getFloat(data))
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{
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_factor = data;
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fr+=2;
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iteratorAdvanced = true;
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}
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if (fr[0].matchWord("units") && fr[1].getFloat(data))
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{
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_units = data;
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fr+=2;
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iteratorAdvanced = true;
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}
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return iteratorAdvanced;
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}
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bool PolygonOffset::writeLocalData(Output& fw)
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{
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fw.indent() << "factor " << _factor << endl;
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fw.indent() << "units " << _units << endl;
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return true;
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}
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