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lib/maxsdk70/include/mentalray/imrShader.h

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+/*==============================================================================
+
+  file:     imrShader.h
+
+  author:   Daniel Levesque
+
+  created:  10feb2003
+
+  description:
+
+    Interface definition for mental ray shaders.
+
+  modified:	
+
+
+<EFBFBD> 2003 Autodesk
+==============================================================================*/
+#ifndef __IMRSHADER__H
+#define __IMRSHADER__H
+
+#include <windows.h>
+#include <tab.h>
+#include <maxtypes.h>
+#include <BaseInterface.h>
+#include <strclass.h>
+
+class imrShaderClassDesc;
+class IParamBlock2;
+class ReferenceTarget;
+
+// Interface ID for imrShader interface
+#define IMRSHADER_INTERFACE_ID Interface_ID(0x3b2f7b97, 0x5766e45)
+
+//==============================================================================
+// class imrShader
+//
+// Abstract class from which the mental ray shaders are derived.
+//
+// 3rd parties must not derive from this interface.
+//
+// This interface is implemented by both material plugins (class Mtl) and texture
+// map plugins (class Texmap). To query this interface from a material or texture
+// map plugin, use the GetIMRShader() and IsIMRShader() functions below.
+//
+//==============================================================================
+class imrShader : public BaseInterface {
+
+public:
+
+	// Naming methods
+	virtual void SetName(const TCHAR* name) = 0;
+	virtual const TCHAR* GetName() = 0;
+	virtual TSTR GetFullName() = 0;
+
+    // Returns the class descriptor of this shader.
+    virtual imrShaderClassDesc& GetClassDesc() = 0;
+
+    // Access to the four main parameter blocks
+    virtual IParamBlock2* GetResultsParamBlock() = 0;
+    virtual IParamBlock2* GetParametersParamBlock() = 0;
+    virtual IParamBlock2* GetConnectionsParamBlock() = 0;
+
+    // Called when WM_HELP is received by the shader editor. Show shader help
+    // and return true, or return false for default handling.
+    virtual bool HandleHelp() = 0;
+
+	// Returns the ReferenceTarget associated with the given shader. Class imrShader
+	// does not derive from ReferenceTarget, but its implementation does.
+	// This method is necessary if the client wishes to create a reference to the
+	// shader.
+	virtual ReferenceTarget& GetReferenceTarget() = 0;
+
+	// Controls whether this shader was created for custom translation.
+	// USED INTERNALLY.
+	virtual bool IsCustomTranslationShader() = 0;
+	virtual void SetCustomTranslationShader(bool val) = 0;
+
+    // -- from BaseInterface
+    virtual Interface_ID GetID();
+};
+
+inline Interface_ID imrShader::GetID() {
+
+    return IMRSHADER_INTERFACE_ID;
+}
+
+
+//==============================================================================
+// GetIMRShader()
+//
+// Queries and returns the imrShader interface on an object. Returns NULL if
+// the given object is _not_ a mental ray shader.
+//==============================================================================
+inline imrShader* GetIMRShader(InterfaceServer* iserver) {
+
+	if(iserver == NULL)
+		return NULL;
+	else
+		return static_cast<imrShader*>(iserver->GetInterface(IMRSHADER_INTERFACE_ID));
+}
+
+//==============================================================================
+// IsIMRShader()
+//
+// Returns whether an object implements the imrShader interface (i.e. returns
+// whether an object _is_ a mental ray shader).
+//==============================================================================
+inline bool IsIMRShader(InterfaceServer* iserver) {
+
+	return (GetIMRShader(iserver) != NULL);
+}
+
+//==============================================================================
+// GetReferenceTarget()
+//
+// Converts a mental ray shader back to a reference target.
+//==============================================================================
+inline ReferenceTarget* GetReferenceTarget(imrShader* shader) {
+
+	return ((shader != NULL) ? &shader->GetReferenceTarget() : NULL);
+}
+
+#endif
+