Model Class Reference

#include <OPC_Model.h>

Inheritance diagram for Model:

List of all members.

Public Member Functions
	Model ()
	override (BaseModel) bool Build(const OPCODECREATE &create)
	override (BaseModel) udword GetUsedBytes() const
virtual	~Model ()
Private Member Functions
void	Release ()

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Detailed Description

The main collision wrapper, for all trees. Supported trees are:

• Normal trees (2*N-1 nodes, full size)
• No-leaf trees (N-1 nodes, full size)
• Quantized trees (2*N-1 nodes, half size)
• Quantized no-leaf trees (N-1 nodes, half size)

Usage:

1) Create a static mesh interface using callbacks or pointers. (see OPC_MeshInterface.cpp). Keep it around in your app, since a pointer to this interface is saved internally and used until you release the collision structures.

2) Build a Model using a creation structure:

                Model Sample;

                OPCODECREATE OPCC;
                OPCC.IMesh                      = ...;
                OPCC.Rules                      = ...;
                OPCC.NoLeaf                     = ...;
                OPCC.Quantized          = ...;
                OPCC.KeepOriginal       = ...;
                bool Status = Sample.Build(OPCC);

3) Create a tree collider and set it up:

                AABBTreeCollider TC;
                TC.SetFirstContact(...);
                TC.SetFullBoxBoxTest(...);
                TC.SetFullPrimBoxTest(...);
                TC.SetTemporalCoherence(...);

4) Perform a collision query

                // Setup cache
                static BVTCache ColCache;
                ColCache.Model0 = &Model0;
                ColCache.Model1 = &Model1;

                // Collision query
                bool IsOk = TC.Collide(ColCache, World0, World1);

                // Get collision status => if true, objects overlap
                BOOL Status = TC.GetContactStatus();

                // Number of colliding pairs and list of pairs
                udword NbPairs = TC.GetNbPairs();
                const Pair* p = TC.GetPairs()

5) Stats

                Model0.GetUsedBytes()   = number of bytes used for this collision tree
                TC.GetNbBVBVTests()             = number of BV-BV overlap tests performed during last query
                TC.GetNbPrimPrimTests() = number of Triangle-Triangle overlap tests performed during last query
                TC.GetNbBVPrimTests()   = number of Triangle-BV overlap tests performed during last query

Author:

Pierre Terdiman

Version:

1.3

Date:

March, 20, 2001

Definition at line 23 of file OPC_Model.h.

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Constructor & Destructor Documentation

Model::Model

(

)

virtual Model::~Model

(

)

[virtual]

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Member Function Documentation

Model::override

(

BaseModel

)

const

Builds a collision model.

Parameters:

create

[in] model creation structure

Returns:

true if success

Model::override

(

BaseModel

)

const

Gets the number of bytes used by the tree.

Returns:

amount of bytes used

void Model::Release

(

)

[private]

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The documentation for this class was generated from the following file:

• OPC_Model.h