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Metario
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lib/maxsdk70/include/MeshNormalSpec.h
Executable file
208
lib/maxsdk70/include/MeshNormalSpec.h
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/**********************************************************************
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*<
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FILE: MeshNormalSpec.h
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DESCRIPTION: User-specifiable normals for Triangle Meshes
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CREATED BY: Steve Anderson
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HISTORY: created July 2002 during SIGGraph
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*> Copyright (c) 2002 Autodesk, Inc., All Rights Reserved.
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**********************************************************************/
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// Necessary prior inclusions...?
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#ifndef __MESH_NORMALS_H_
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#define __MESH_NORMALS_H_
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#include "baseinterface.h"
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#include "ipipelineclient.h"
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#define MESH_NORMAL_SPEC_INTERFACE Interface_ID(0xa4e770b, 0x47aa3cf9)
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/// <summary>
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/// <seealso>class MeshNormalSpec</seealso>
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///
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/// This class is available in release 6.0 and later only.
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///
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/// This class is used to store specified normal information for a
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/// particular face in a Mesh. An array of these faces is used in
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/// class MeshNormalSpec to match vertex normals to vertices.
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///
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/// Each MeshNormalFace contains a bit indicating whether each corner
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/// is specified, and a Normal ID for each specified corner.
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/// </summary>
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class MeshNormalFace {
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int mNormalID[3];
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UBYTE mSpecified;
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public:
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///<summary> Constructor - sets all corners to "unspecified" </summary>
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MeshNormalFace () : mSpecified(0x0) { }
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///<summary> Resets all corners to "unspecified". </summary>
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DllExport void Clear();
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///<summary> Accessor for normal in a particular corner of the face. </summary>
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///<param name="corner"> The (zero-based) index of the corner of the face </param>
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///<returns> The index of the normal (in the owner MeshNormalSpec's normal array)
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// used in that corner, or -1 for error </returns>
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int GetNormalID(int corner) { return ((corner>-1) && (corner<3)) ? mNormalID[corner] : -1; }
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///<summary> Setter for the normal used in a particular corner of the face </summary>
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///<param name="corner"> The (zero-based) index of the corner of the face </param>
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///<param name="norm"> The index of the normal (in the owner MeshNormalSpec's normal array).</param>
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void SetNormalID (int corner, int norm) { if ((corner>-1) && (corner<3)) mNormalID[corner] = norm; }
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int *GetNormalIDArray () { return mNormalID; }
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bool GetSpecified (int corner) { return ((corner>-1) && (corner<3) && (mSpecified & (1<<corner))) ? true : false; }
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DllExport void SetSpecified (int corner, bool value=true);
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DllExport void SpecifyNormalID (int corner, int norm);
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void SpecifyAll (bool value=true) { mSpecified = value ? 7 : 0; }
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DllExport void Flip (); // Reverses order of verts. 0 remains start.
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DllExport MeshNormalFace & operator= (const MeshNormalFace & from);
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DllExport void MyDebugPrint (bool printAll=false);
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DllExport IOResult Save (ISave *isave);
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DllExport IOResult Load (ILoad *iload);
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};
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// Class MeshNormalSpec flags:
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#define MESH_NORMAL_NORMALS_BUILT 0x01
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#define MESH_NORMAL_NORMALS_COMPUTED 0x02
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#define MESH_NORMAL_DISPLAY_HANDLES 0x04
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#define MESH_NORMAL_FACE_ANGLES 0x08 // Used face angles last time we computed normals
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#define MESH_NORMAL_MODIFIER_SUPPORT 0x20 // When modifying mesh, indicates whether the current modifier supports these Normals.
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// Default length for normal display
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#define MESH_NORMAL_LENGTH_DEFAULT 10.0f
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class MeshNormalSpec : public IPipelineClient {
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private:
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int mNumNormalAlloc, mNumFaceAlloc;
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int mNumNormals, mNumFaces;
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MeshNormalFace *mpFace;
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Point3 *mpNormal;
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BitArray mNormalExplicit; // Indicates whether mpNormal[i] is explicit or computed from face normals.
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// Display and selection data:
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BitArray mNormalSel;
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float mDisplayLength;
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DWORD mFlags;
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// We also maintain a pointer to the parent Mesh
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// (NOTE that the Mesh MUST keep this pointer updated at all times!)
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Mesh *mpParent;
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public:
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MeshNormalSpec () : mpFace(NULL), mpNormal(NULL), mNumNormalAlloc(0),
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mNumFaceAlloc(0), mNumNormals(0), mNumFaces(0), mpParent(NULL), mFlags(0),
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mDisplayLength(MESH_NORMAL_LENGTH_DEFAULT) { }
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~MeshNormalSpec () { ClearAndFree (); }
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// Flag Accessors:
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void SetFlag (DWORD fl, bool val=true) { if (val) mFlags |= fl; else mFlags &= ~fl; }
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void ClearFlag (DWORD fl) { mFlags &= ~fl; }
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bool GetFlag (DWORD fl) const { return (mFlags & fl) ? true : false; }
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// Initialization, allocation:
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DllExport void Initialize (); // Initializes all data members - do not use if already allocated!
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DllExport bool NAlloc (int num, bool keep=TRUE);
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DllExport void NShrink (); // shrinks allocation down to actual number of normals.
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DllExport bool FAlloc (int num, bool keep=TRUE);
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DllExport void FShrink ();
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DllExport void Clear (); // Deletes everything.
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DllExport void ClearAndFree (); // Deletes everything, frees all memory
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// Data access:
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// Lowest level:
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int GetNumFaces () const { return mNumFaces; }
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DllExport bool SetNumFaces (int numFaces);
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int GetNumNormals () const { return mNumNormals; }
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DllExport bool SetNumNormals (int numNormals);
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Point3 & Normal (int normID) const { return mpNormal[normID]; }
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Point3 * GetNormalArray () const { return mpNormal; }
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bool GetNormalExplicit (int normID) const { return mNormalExplicit[normID] ? true : false; }
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void SetNormalExplicit (int normID, bool value) { mNormalExplicit.Set (normID, value); }
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void SetAllExplicit (bool value=true) { if (value) mNormalExplicit.SetAll(); else mNormalExplicit.ClearAll (); }
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MeshNormalFace & Face(int faceID) const { return mpFace[faceID]; }
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MeshNormalFace * GetFaceArray () const { return mpFace; }
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void SetParent (Mesh *pMesh) { mpParent = pMesh; }
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// Data access - higher level:
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DllExport Point3 & GetNormal (int face, int corner);
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DllExport void SetNormal (int face, int corner, Point3 & normal);
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DllExport int GetNormalIndex (int face, int corner);
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DllExport void SetNormalIndex (int face, int corner, int normalIndex);
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DllExport int NewNormal (Point3 normal, bool explic=true);
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DllExport void SetSelection (BitArray & newSelection);
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BitArray & GetSelection() { return mNormalSel; }
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void SetDisplayLength (float displayLength) { mDisplayLength = displayLength; }
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float GetDisplayLength () { return mDisplayLength; }
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// Display and hit testing - note that these require an accurate mpParent pointer.
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DllExport void Display (GraphicsWindow *gw, bool showSel);
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DllExport bool HitTest (GraphicsWindow *gw, HitRegion *hr, DWORD flags, SubObjHitList& hitList);
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DllExport Box3 GetBoundingBox (Matrix3 *tm=NULL, bool selectedOnly=false);
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// This method dumps all unspecified normals. Best to use only from within CheckNormals.
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DllExport void ClearNormals ();
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// Fills in the mpSpecNormal data by building all the unspecified normals,
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// and computing non-explicit ones.
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// Does nothing if normal faces not allocated yet!
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// Requires an accurate mpParent pointer.
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DllExport void BuildNormals ();
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// This method just recomputes the directions of non-explicit normals,
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// without rebuilding the normal list.
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// Requires an accurate mpParent pointer.
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DllExport void ComputeNormals ();
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// This checks our flags and calls BuildNormals, ComputeNormals as needed.
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// Requires an accurate mpParent pointer.
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DllExport void CheckNormals ();
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// operators and debug printing
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DllExport MeshNormalSpec & operator= (const MeshNormalSpec & from);
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DllExport void CopySpecified (const MeshNormalSpec & from); // Like operator=, but omits unspecified.
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DllExport MeshNormalSpec & operator+= (const MeshNormalSpec & from);
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DllExport void MyDebugPrint (bool printAll=false);
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DllExport bool CheckAllData (int numParentFaces);
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DllExport IOResult Save (ISave *isave);
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DllExport IOResult Load (ILoad *iload);
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// From BaseInterface:
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Interface_ID GetID() {return MESH_NORMAL_SPEC_INTERFACE;}
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DllExport void DeleteInterface();
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DllExport BaseInterface* GetInterface(Interface_ID id);
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DllExport BaseInterface* CloneInterface(void* remapDir = NULL);
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// --- IPipelineClient methods
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DllExport void ShallowCopy( IPipelineClient* from, ULONG_PTR channels );
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DllExport void DeepCopy( IPipelineClient* from, ULONG_PTR channels );
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DllExport void NewAndCopyChannels( ULONG_PTR channels );
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DllExport void FreeChannels( ULONG_PTR channels, int zeroOthers = 1 );
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DllExport void ZeroChannels( ULONG_PTR channels );
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DllExport void AppendAllChannels( IPipelineClient* from );
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// Actual operations:
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DllExport bool Transform (Matrix3 & xfm, BOOL useSel=false, BitArray *normalSelection=NULL);
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DllExport bool Translate (Point3 & translate, BOOL useSel=true, BitArray *normalSelection=NULL);
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DllExport bool BreakNormals (BOOL useSel=true, BitArray *normalSelection=NULL, BOOL toAverage=false);
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// Requires an accurate mpParent pointer:
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DllExport bool UnifyNormals (BOOL useSel=true, BitArray *normalSelection=NULL, BOOL toAverage=false);
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DllExport bool AverageNormals (BOOL useThresh=false, float threshold=0.0f, BOOL useSel=true, BitArray *normalSelection=NULL);
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DllExport bool SpecifyNormals (BOOL useSel=true, BitArray *normalSelection=NULL);
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DllExport bool MakeNormalsExplicit (BOOL useSel=true, BitArray *normalSelection=NULL, bool value=true);
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DllExport bool ResetNormals (BOOL useSel=true, BitArray *normalSelection=NULL);
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};
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#endif //__MESH_NORMALS_H_
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