Initial revision

src/osg/TexEnv.cpp

@@ -0,0 +1,78 @@
+#include "osg/TexEnv"
+#include "osg/Input"
+#include "osg/Output"
+
+using namespace osg;
+
+TexEnv::TexEnv( void )
+{
+    _mode = MODULATE;
+}
+
+TexEnv::~TexEnv( void )
+{
+}
+
+TexEnv* TexEnv::instance()
+{
+    static ref_ptr<TexEnv> s_TexEnv(new TexEnv);
+    return s_TexEnv.get();
+}
+
+
+void TexEnv::setMode( TexEnvMode mode )
+{
+    _mode = (mode == DECAL ||
+             mode == MODULATE ||
+             mode == BLEND ) ?
+             mode : MODULATE;
+}
+
+void TexEnv::apply( void )
+{
+    glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, _mode);
+}
+
+bool TexEnv::readLocalData(Input& fr)
+{
+    bool iteratorAdvanced = false;
+    TexEnvMode mode;
+    if (fr[0].matchWord("mode") && matchModeStr(fr[1].getStr(),mode))
+    {
+        _mode = mode;
+        fr+=2;
+        iteratorAdvanced = true;
+    }
+
+    return iteratorAdvanced;
+}
+
+
+bool TexEnv::matchModeStr(const char* str,TexEnvMode& mode)
+{
+    if (strcmp(str,"DECAL")==0) mode = DECAL;
+    else if (strcmp(str,"MODULATE")==0) mode = MODULATE;
+    else if (strcmp(str,"BLEND")==0) mode = BLEND;
+    else return false;
+    return true;
+}
+
+
+const char* TexEnv::getModeStr(TexEnvMode mode)
+{
+    switch(mode)
+    {
+        case(DECAL): return "DECAL";
+        case(MODULATE): return "MODULATE";
+        case(BLEND): return "BLEND";
+    }
+    return "";
+}
+
+
+bool TexEnv::writeLocalData(Output& fw)
+{
+    fw.indent() << "mode " << getModeStr(_mode) << endl;
+
+    return true;
+}