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Change memory allocation for mex function

fixes-turtlebasket
Mattia 2019-07-09 16:34:26 +01:00
parent d56fac5562
commit 2dc15e8cf9
1 changed files with 43 additions and 36 deletions
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73
lib/src/openGJK.c
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@ -827,18 +827,17 @@ void mexFunction( int nlhs, mxArray *plhs[],
int nrhs, const mxArray *prhs[]) int nrhs, const mxArray *prhs[])
{ {
double multiplier;
double *inCoordsA; double *inCoordsA;
double *inCoordsB; double *inCoordsB;
size_t nCoordsA; size_t nCoordsA;
size_t nCoordsB; size_t nCoordsB;
size_t ncols; int i,j;
double *outMatrix;
int i,j,idx;
double *distance; double *distance;
int r = 30;
int c = 3; int c = 3;
int count; int count = 0;
int len1 = 0, len2 = 0;
double *ptr1, **arr1;
double *ptr2, **arr2;
/**************** PARSE INPUTS AND OUTPUTS **********************/ /**************** PARSE INPUTS AND OUTPUTS **********************/
/*----------------------------------------------------------------*/ /*----------------------------------------------------------------*/
@ -888,6 +887,37 @@ void mexFunction( int nlhs, mxArray *plhs[],
/* get a pointer to the real data in the output matrix */ /* get a pointer to the real data in the output matrix */
distance = mxGetPr(plhs[0]); distance = mxGetPr(plhs[0]);
/* Copy data from Matlab's vectors into two new arrays */
len1 = sizeof(double *) * (int) nCoordsA + sizeof(double) * c * (int) nCoordsA;
arr1 = (double **)mxMalloc(len1);
len2 = sizeof(double *) * (int) nCoordsB + sizeof(double) * c * (int) nCoordsB;
arr2 = (double **)mxMalloc(len2);
ptr1 = (double *)(arr1 + nCoordsA);
ptr2 = (double *)(arr2 + nCoordsB);
for (i = 0; i < nCoordsA; i++)
arr1[i] = (ptr1 + c * i);
for (i = 0; i < nCoordsB; i++)
arr2[i] = (ptr2 + c * i);
for (i = 0; i < nCoordsA; i++)
for (j = 0; j < c; j++)
arr1[i][j] = ++count;
for (i = 0; i < nCoordsB; i++)
for (j = 0; j < c; j++)
arr2[i][j] = ++count;
for (i = 0; i < 3; i++)
for (j = 0; j < nCoordsA; j++)
arr1[j][i] = inCoordsA[i + j * 3];
for (i = 0; i < 3; i++)
for (j = 0; j < nCoordsB; j++)
arr2[j][i] = inCoordsB[i + j * 3];
/*----------------------------------------------------------------*/ /*----------------------------------------------------------------*/
/* POPULATE BODIES' STRUCTURES */ /* POPULATE BODIES' STRUCTURES */
@ -899,43 +929,20 @@ void mexFunction( int nlhs, mxArray *plhs[],
bd1.numpoints = (int) nCoordsA; bd1.numpoints = (int) nCoordsA;
bd2.numpoints = (int) nCoordsB; bd2.numpoints = (int) nCoordsB;
double **pinCoordsA = (double **)malloc(bd1.numpoints * sizeof(double *)); bd1.coord = arr1;
for (i=0; i< bd1.numpoints ; i++) bd2.coord = arr2;
pinCoordsA[i] = (double *)malloc(3 * sizeof(double));
for (i = 0; i < 3; i++)
for (j = 0; j < bd1.numpoints; j++)
pinCoordsA[j][i] = inCoordsA[ i + j*3] ;
double **pinCoordsB = (double **)malloc(bd2.numpoints * sizeof(double *));
for (i=0; i< bd2.numpoints ; i++)
pinCoordsB[i] = (double *)malloc(3 * sizeof(double));
for (i = 0; i < 3; i++)
for (j = 0; j < bd2.numpoints; j++)
pinCoordsB[j][i] = inCoordsB[ i + j*3] ;
bd1.coord = pinCoordsA;
bd2.coord = pinCoordsB;
/*----------------------------------------------------------------*/ /*----------------------------------------------------------------*/
/*CALL COMPUTATIONAL ROUTINE */ /*CALL COMPUTATIONAL ROUTINE */
struct simplex s; struct simplex s;
/* Initialise simplex as empty */
s.nvrtx = 0; s.nvrtx = 0;
/* Compute squared distance using GJK algorithm */ /* Compute squared distance using GJK algorithm */
distance[0] = gjk (bd1, bd2, &s); distance[0] = gjk (bd1, bd2, &s);
for (i=0; i< bd1.numpoints ; i++) mxFree(arr1);
free(pinCoordsA[i]); mxFree(arr2);
free( pinCoordsA );
for (i=0; i< bd2.numpoints ; i++)
free(pinCoordsB[i]);
free( pinCoordsB );
} }
#endif #endif