Functions | |
void | Show_Modelling_Matrix (float *matrix) |
void | DShow_Modelling_Matrix (double *matrix) |
int | PShow_Net_Modelling_Matrix (int key_count, const HC_KEY *path_keys, float *matrix) |
int | DPShow_Net_Modelling_Matrix (int key_count, const HC_KEY *path_keys, double *matrix) |
void Show_Modelling_Matrix | ( | float * | matrix | ) |
Returns the modelling matrix that has been set on the currently open segment.
matrix | - Curent transformation matrix. Passed by reference. Returned to user. |
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_Modelling_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 DShow_Modelling_Matrix | ( | double * | matrix | ) |
Similar to Show_Modelling_Matrix(), but operates on double-precision matrices.
matrix | - Curent transformation matrix. Passed by reference. Returned to user. |
int PShow_Net_Modelling_Matrix | ( | int | key_count, | |
const HC_KEY * | path_keys, | |||
float * | matrix | |||
) |
Similar to Show_Modelling_Matrix(), but returns the net effective value along a discrete segment path.
key_count | - The size of path_keys | |
path_keys | - An array of HC_KEY's delineating a path of segments. | |
matrix | - Curent transformation matrix. Passed by reference. Returned to user. |
By default, HOOPS Visualize will determine the net attribute from the last specified key all the way to the root. If you add -1 at the end of the array, the PShow_Net routines will not proceed beyond the end of the last specified key.
A return value of 0 indicates no matrix was found. A value of 1 indicates a single-precision matrix was found. A value of 2 indicates a double-precision matrix was found.
For other details, see Show_Modelling_Matrix()
int DPShow_Net_Modelling_Matrix | ( | int | key_count, | |
const HC_KEY * | path_keys, | |||
double * | matrix | |||
) |
Similar to PShow_Net_Modelling_Matrix(), but operates on double-precision modelling matrices.
key_count | - The size of path_keys | |
path_keys | - An array of HC_KEY's delineating a path of segments. | |
matrix | - Curent transformation matrix. Passed by reference. Returned to user. |