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greg |
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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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} |
