IProjectionIntersector Class Reference

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Detailed Description

Description

provides an interface to the Projection Intersector which provides ray-tracing tools intended for use by the plug-ins.

#include <IProjectionMod.h>

Inheritance diagram for IProjectionIntersector:

List of all members.

Public Types
enum	{ FINDCLOSEST_CAGED = 1, FINDCLOSEST_IGNOREBACKFACING = 2 }
Public Member Functions
	IProjectionIntersector ()
virtual	~IProjectionIntersector ()
virtual void	DeleteThis ()
virtual BOOL	InitRoot (MNMesh *root, MNMesh *cage, Matrix3 &objectToWorldTM)=0
virtual BOOL	InitRoot (ObjectWrapper &root, ObjectWrapper &cage, Matrix3 &objectToWorldTM)=0
virtual BOOL	RootValid ()=0
virtual BOOL	InitLeaf (MNMesh *leaf, Matrix3 &objectToWorldTM)=0
virtual BOOL	InitLeaf (ObjectWrapper &leaf, Matrix3 &objectToWorldTM)=0
virtual BOOL	LeafValid ()=0
virtual void	Free ()=0
virtual BOOL	RootClosestFace (Ray &pointAndNormal, int flags, float &dist, DWORD &rootFaceIndex, Tab< float > &rootFaceBary)=0
virtual BOOL	LeafIntersectRay (Ray &ray, float &dist, DWORD &leafFaceIndex, Tab< float > &leafFaceBary)=0
virtual BOOL	LeafIntersectRay (DWORD rootFaceIndex, Point3 &rootFaceBary, float &dist, DWORD &leafFaceIndex, Tab< float > &leafFaceBary)=0

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Member Enumeration Documentation

anonymous enum

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Enumerator:

FINDCLOSEST_CAGED	Search for all occurrences
FINDCLOSEST_IGNOREBACKFACING	Search for all occurrences

{FINDCLOSEST_CAGED=1, FINDCLOSEST_IGNOREBACKFACING=2};

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Constructor & Destructor Documentation

IProjectionIntersector

(

)

[inline]

{}

virtual ~IProjectionIntersector

(

)

[inline, virtual]

{}

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Member Function Documentation

virtual void DeleteThis

(

)

[inline, virtual]

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{}

virtual BOOL InitRoot	(	MNMesh *	root,
		MNMesh *	cage,
		Matrix3 &	objectToWorldTM
	)		[pure virtual]

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Parameters:

root	- The root is normally the object on which the projection modifier is applied.
cage	- The cage is optional, it may be NULL or empty; if supplied, the cage must have the same topology as the root.

virtual BOOL InitRoot	(	ObjectWrapper &	root,
		ObjectWrapper &	cage,
		Matrix3 &	objectToWorldTM
	)		[pure virtual]

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Parameters:

root	- The root is normally the object on which the projection modifier is applied.
cage	- The cage is optional, it may be NULL or empty; if supplied, the cage must have the same topology as the root.

virtual BOOL RootValid

(

)

[pure virtual]

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Returns:

true if initialized, false when free'd

virtual BOOL InitLeaf	(	MNMesh *	leaf,
		Matrix3 &	objectToWorldTM
	)		[pure virtual]

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Parameters:

leaf	- A leaf is normally one of the objects targeted by the projection modifier.

virtual BOOL InitLeaf	(	ObjectWrapper &	leaf,
		Matrix3 &	objectToWorldTM
	)		[pure virtual]

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Parameters:

leaf	- A leaf is normally one of the objects targeted by the projection modifier.

virtual BOOL LeafValid

(

)

[pure virtual]

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Returns:

true if initialized, false when free'd

virtual void Free

(

)

[pure virtual]

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Remarks:

releases memory allocated by the Init functions

virtual BOOL RootClosestFace	(	Ray &	pointAndNormal,
		int	flags,
		float &	dist,
		DWORD &	rootFaceIndex,
		Tab< float > &	rootFaceBary
	)		[pure virtual]

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Remarks:

Given a point in root object space, and a normal for the point (optional - may be zero), find the closest face, and barycentric coordinates of the point as projected onto the face

Precondition:

Root functions: Require the root be initialized first

virtual BOOL LeafIntersectRay	(	Ray &	ray,
		float &	dist,
		DWORD &	leafFaceIndex,
		Tab< float > &	leafFaceBary
	)		[pure virtual]

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Remarks:

Find an intersection on a leaf, given a ray

Precondition:

Require a leaf be initialized first

virtual BOOL LeafIntersectRay	(	DWORD	rootFaceIndex,
		Point3 &	rootFaceBary,
		float &	dist,
		DWORD &	leafFaceIndex,
		Tab< float > &	leafFaceBary
	)		[pure virtual]

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Remarks:

Find an intersection on a leaf, given a point on the root mesh

Precondition:

Require that BOTH the root and a leaf are initialized