assimp/code/BlenderModifier.h

/*
Open Asset Import Library (assimp)
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*/

/** @file  BlenderModifier.h
 *  @brief Declare dedicated helper classes to simulate some blender modifiers (i.e. mirror)
 */
#ifndef INCLUDED_AI_BLEND_MODIFIER_H
#define INCLUDED_AI_BLEND_MODIFIER_H

#include "BlenderIntermediate.h"
#include "TinyFormatter.h"
namespace Assimp {
	namespace Blender {

// -------------------------------------------------------------------------------------------
/** Dummy base class for all blender modifiers. Modifiers are reused between imports, so
 *  they should be stateless and not try to cache model data. */
// -------------------------------------------------------------------------------------------
class BlenderModifier 
{
public:

	virtual ~BlenderModifier() {
	}

public:

	// --------------------
	/** Check if *this* modifier is active, given a ModifierData& block.*/
	virtual bool IsActive( const ModifierData& /*modin*/) {
		return false;
	}

	// --------------------
	/** Apply the modifier to a given output node. The original data used
	 *  to construct the node is given as well. Not called unless IsActive()
	 *  was called and gave positive response. */
	virtual void DoIt(aiNode& /*out*/,
		ConversionData& /*conv_data*/,
		const ElemBase& orig_modifier, 
		const Scene& /*in*/,
		const Object& /*orig_object*/
	) {
		DefaultLogger::get()->warn((Formatter::format("This modifier is not supported, skipping: "),orig_modifier.dna_type));
		return;
	}
};


// -------------------------------------------------------------------------------------------
/** Manage all known modifiers and instance and apply them if necessary */
// -------------------------------------------------------------------------------------------
class BlenderModifierShowcase
{
public:

	// --------------------
	/** Apply all requested modifiers provided we support them. */
	void ApplyModifiers(aiNode& out,
		ConversionData& conv_data, 
		const Scene& in, 
		const Object& orig_object 
	);

private:

	TempArray< std::vector,BlenderModifier > cached_modifiers;
};





// MODIFIERS



// -------------------------------------------------------------------------------------------
/** Mirror modifier. Status: implemented. */
// -------------------------------------------------------------------------------------------
class BlenderModifier_Mirror : public BlenderModifier
{
public:

	// --------------------
	virtual bool IsActive( const ModifierData& modin);
	
	// --------------------
	virtual void DoIt(aiNode& out, 
		ConversionData& conv_data,  
		const ElemBase& orig_modifier, 
		const Scene& in, 
		const Object& orig_object 
	) ;
};

// -------------------------------------------------------------------------------------------
/** Subdivision modifier. Status: dummy. */
// -------------------------------------------------------------------------------------------
class BlenderModifier_Subdivision : public BlenderModifier
{
public:

	// --------------------
	virtual bool IsActive( const ModifierData& modin);
	
	// --------------------
	virtual void DoIt(aiNode& out, 
		ConversionData& conv_data,  
		const ElemBase& orig_modifier, 
		const Scene& in, 
		const Object& orig_object 
	) ;
};


}}
#endif // !INCLUDED_AI_BLEND_MODIFIER_H