66 lines
1.6 KiB
Plaintext
66 lines
1.6 KiB
Plaintext
#ifndef OSG_ALPHAFUNC
|
|
#define OSG_ALPHAFUNC 1
|
|
|
|
#include <osg/Export>
|
|
#include <osg/Object>
|
|
#include <osg/GL>
|
|
|
|
namespace osg {
|
|
|
|
/** Encapsulte OpenGL glAlphaFunc.
|
|
*/
|
|
class SG_EXPORT AlphaFunc : public Object
|
|
{
|
|
public :
|
|
|
|
enum ComparisonFunction {
|
|
NEVER = GL_NEVER,
|
|
LESS = GL_LESS,
|
|
EQUAL = GL_EQUAL,
|
|
LEQUAL = GL_LEQUAL,
|
|
GREATER = GL_GREATER,
|
|
NOTEQUAL = GL_NOTEQUAL,
|
|
GEQUAL = GL_GEQUAL,
|
|
ALWAYS = GL_ALWAYS
|
|
};
|
|
|
|
AlphaFunc();
|
|
static AlphaFunc* instance();
|
|
virtual bool isSameKindAs(Object* obj) { return dynamic_cast<AlphaFunc*>(obj)!=NULL; }
|
|
virtual Object* clone() const { return new AlphaFunc(); }
|
|
virtual const char* className() const { return "AlphaFunc"; }
|
|
|
|
void setFunction(ComparisonFunction func,float ref)
|
|
{
|
|
_comparisonFunc = func;
|
|
_referenceValue = ref;
|
|
}
|
|
|
|
ComparisonFunction getFunction() const { return _comparisonFunc; }
|
|
|
|
float getRefrenceValue() const { return _referenceValue; }
|
|
|
|
static void enable();
|
|
static void disable();
|
|
|
|
void apply();
|
|
|
|
protected:
|
|
|
|
virtual ~AlphaFunc();
|
|
|
|
virtual bool readLocalData(Input& fr);
|
|
virtual bool writeLocalData(Output& fw);
|
|
|
|
bool matchFuncStr(const char* str,ComparisonFunction& func);
|
|
const char* getFuncStr(ComparisonFunction func);
|
|
|
|
ComparisonFunction _comparisonFunc;
|
|
float _referenceValue;
|
|
|
|
};
|
|
|
|
};
|
|
|
|
#endif
|