Fixing template instancing failure in aiMaterial::Get().

Providing explicit specialization for aiColor3D.

git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@470 67173fc5-114c-0410-ac8e-9d2fd5bffc1f

include/aiMaterial.inl

@@ -75,8 +75,9 @@ inline aiReturn aiMaterial::Get(const char* pKey,unsigned int type,
 {
 	unsigned int iNum = pMax ? *pMax : 1;
 
-	aiMaterialProperty* prop;
-	aiReturn ret = ::aiGetMaterialProperty(this,pKey,type,idx,&prop);
+	const aiMaterialProperty* prop;
+	const aiReturn ret = ::aiGetMaterialProperty(this,pKey,(aiTextureType)type,idx,
+		(const aiMaterialProperty**)&prop);
 	if ( AI_SUCCESS == ret )	{
 
 		if (prop->mDataLength < sizeof(Type)*iNum) {
@@ -100,8 +101,9 @@ template <typename Type>
 inline aiReturn aiMaterial::Get(const char* pKey,unsigned int type,
 	unsigned int idx,Type& pOut) const
 {
-	aiMaterialProperty* prop;
-	aiReturn ret = ::aiGetMaterialProperty(this,pKey,type,idx,&prop);
+	const aiMaterialProperty* prop;
+	const aiReturn ret = ::aiGetMaterialProperty(this,pKey,(aiTextureType)type,idx,
+		(const aiMaterialProperty**)&prop);
 	if ( AI_SUCCESS == ret )	{
 
 		if (prop->mDataLength < sizeof(Type)) {
@@ -156,6 +158,16 @@ inline aiReturn aiMaterial::Get<aiColor4D>(const char* pKey,unsigned int type,
 }
 // ---------------------------------------------------------------------------
 template <>
+inline aiReturn aiMaterial::Get<aiColor3D>(const char* pKey,unsigned int type,
+	unsigned int idx,aiColor3D& pOut) const
+{
+	aiColor4D c;
+	const aiReturn ret = aiGetMaterialColor(this,pKey,type,idx,&c);
+	pOut = aiColor3D(c.r,c.g,c.b);
+	return ret;
+}
+// ---------------------------------------------------------------------------
+template <>
 inline aiReturn aiMaterial::Get<aiString>(const char* pKey,unsigned int type,
 	unsigned int idx,aiString& pOut) const
 {