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#ifndef lint
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static const char RCSid[] = "$Id$";
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#endif
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/*
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* Convert between RMATRIX and CMATRIX types
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*
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* Segregated because it depends on both sublibraries
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*/
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#include "rmatrix.h"
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/* Convert a color matrix to newly allocated RMATRIX buffer */
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RMATRIX *
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rmx_from_cmatrix(const CMATRIX *cm)
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{
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RMATRIX *dnew;
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if (!cm)
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return(NULL);
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dnew = rmx_alloc(cm->nrows, cm->ncols, 3);
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if (!dnew)
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return(NULL);
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dnew->dtype = sizeof(COLORV)==sizeof(float) ?
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DTfloat : DTdouble;
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if (sizeof(COLORV) == sizeof(rmx_dtype)) {
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memcpy(dnew->mtx, cm->cmem, rmx_array_size(dnew));
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} else {
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int i, j;
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for (i = dnew->nrows; i--; )
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for (j = dnew->ncols; j--; ) {
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const COLORV *cv = cm_lval(cm,i,j);
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rmx_dtype *dp = rmx_lval(dnew,i,j);
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dp[0] = cv[0];
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dp[1] = cv[1];
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dp[2] = cv[2];
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}
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}
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return(dnew);
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}
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/* Convert general matrix to newly allocated CMATRIX buffer */
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CMATRIX *
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cm_from_rmatrix(const RMATRIX *rm)
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{
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CMATRIX *cnew;
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if (!rm || !rm->mtx | (rm->ncomp == 2) | (rm->ncomp > MAXCOMP))
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return(NULL);
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cnew = cm_alloc(rm->nrows, rm->ncols);
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if (!cnew)
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return(NULL);
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if ((sizeof(COLORV) == sizeof(rmx_dtype)) & (rm->ncomp == 3)) {
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memcpy(cnew->cmem, rm->mtx, rmx_array_size(rm));
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} else {
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int i, j;
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for (i = cnew->nrows; i--; )
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for (j = cnew->ncols; j--; ) {
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const rmx_dtype *dp = rmx_val(rm,i,j);
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COLORV *cv = cm_lval(cnew,i,j);
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switch (rm->ncomp) {
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case 3:
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setcolor(cv, dp[0], dp[1], dp[2]);
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break;
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case 1:
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setcolor(cv, dp[0], dp[0], dp[0]);
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break;
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default:
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if (sizeof(COLORV) == sizeof(rmx_dtype)) {
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scolor2color(cv, (const COLORV *)dp,
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rm->ncomp, rm->wlpart);
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} else {
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COLORV scol[MAXCOMP];
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int k = rm->ncomp;
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while (k--) scol[k] = dp[k];
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scolor2color(cv, scol, rm->ncomp, rm->wlpart);
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}
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break;
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}
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}
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}
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return(cnew);
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}
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