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Show_Texture_Matrix


Functions

void Show_Texture_Matrix (float *matrix)
void QShow_Texture_Matrix (const char *segment, float *matrix)
void Show_Net_Texture_Matrix (float *matrix)
void PShow_Net_Texture_Matrix (int keycount, HC_KEY *pathkeys, float *matrix)
void QShow_Net_Texture_Matrix (const char *segment, float *matrix)

Function Documentation

void Show_Texture_Matrix ( float *  matrix  ) 

Returns the transformation that has been set against all vertex parameters in the scope of the currently open segment.

Parameters:
matrix A 4x4 matrix describing how textures are aplied to vertices. Passed by reference. Returned to user.

DETAILS

No additional details. See Set_Texture_Matrix()

NOTES

The Show_Texture_Matrix routines return the actual attribute values stored in the particular segment at hand. The Show_Net_Texture_Matrix routines return the effective attribute value for the specified segment. The distinction is that there may or may not be an "actual" stored value for an attribute for a given segment, but there is guaranteed always to be an effective value for every attribute for every segment. Also, "Show Net" will return the cumulative effects of those attributes that concatenate as you go up and down the segment tree (Modelling Matrices and Windows).

When the value being passed back is a string, be sure you've declared your string variable to be long enough.

In C, "passed by reference" means that you have to allocate an appropriate variable, either statically or off the stack, and pass a pointer to that variable to the HOOPS routine. To generate a pointer to a variable C, you prefix the variable with a "&". In other languages you normally don't have to do anything different from usual.

The Show_Texture_Matrix routines will complain if they're called and the attribute is not actually set in the segment. Use Show_Existence() to avoid this, if necessary.

void QShow_Texture_Matrix ( const char *  segment,
float *  matrix 
)

Similar to Show_Texture_Matrix() but operates on a given segment rather than the currently open one.

Parameters:
segment The segment to query.
matrix A 4x4 matrix describing how textures are aplied to vertices. Passed by reference. Returned to user.

DETAILS

No additional details. See Set_Texture_Matrix()

void Show_Net_Texture_Matrix ( float *  matrix  ) 

Similar to Show_Texture_Matrix(), but returns the net effective matrix instead of the local one.

Parameters:
matrix A 4x4 matrix describing how textures are aplied to vertices. Passed by reference. Returned to user.

DETAILS

No additional details. See Set_Texture_Matrix()

void PShow_Net_Texture_Matrix ( int  keycount,
HC_KEY *  pathkeys,
float *  matrix 
)

Similar to Show_Net_Texture_Matrix(), but returns the net effective matrix along a discrete segment path.

Parameters:
keycount The size of pathkeys
pathkeys An array of HC_KEY's delineating a path of segments.
matrix A 4x4 matrix describing how textures are aplied to vertices. Passed by reference. Returned to user.

DETAILS

As with all PShow_Net_* routines, pathkeys[0] represents the lowest (a.k.a the "most local" or "leaf"), and pathkeys[keycount-1] represents the highest segment. If the path is incomplete, missing segments are filled in if possible. Missing segments must be part of the same direct ancestry in order to be filled in. If the desired path contains an include link, the shortest unambiguous set of pathkeys would be [leaf, includelink, root], where includelink is the return value from KInclude_Segment(). For other details, see Show_Net_Texture_Matrix()

void QShow_Net_Texture_Matrix ( const char *  segment,
float *  matrix 
)

Similar to Show_Net_Texture_Matrix() but operates on a given segment rather than the currently open one.

Parameters:
segment The segment to query.
matrix A 4x4 matrix describing how textures are aplied to vertices. Passed by reference. Returned to user.

DETAILS

No additional details. See Set_Texture_Matrix()

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