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author | Lars-Dominik Braun <lars@6xq.net> | 2015-04-07 18:02:59 +0200 |
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committer | Lars-Dominik Braun <lars@6xq.net> | 2015-05-02 21:36:45 +0200 |
commit | d9c048f2028e3103212a1cfc6a29b2dc6c729387 (patch) | |
tree | acec919d535e645c1080043aeaf023b5fb5977cc /flam3.c | |
parent | 83818b18a1fa1e8a00332489e31d346101b6fe9e (diff) | |
download | pucket-d9c048f2028e3103212a1cfc6a29b2dc6c729387.tar.gz pucket-d9c048f2028e3103212a1cfc6a29b2dc6c729387.tar.bz2 pucket-d9c048f2028e3103212a1cfc6a29b2dc6c729387.zip |
Precalc variation constants once
No difference measureable.
Diffstat (limited to 'flam3.c')
-rw-r--r-- | flam3.c | 17 |
1 files changed, 7 insertions, 10 deletions
@@ -147,13 +147,10 @@ int flam3_create_chaos_distrib(flam3_genome *cp, int xi, unsigned short *xform_d return(0); } -/* - * run the function system described by CP forward N generations. store - * the N resulting 4-vectors in SAMPLES. the initial point is passed in - * SAMPLES[0..3]. ignore the first FUSE iterations. - */ - +/* xform_precalc must be called once for each xform before running this + * function + */ int flam3_iterate(flam3_genome *cp, int n, int fuse, const double4 in, double4 *samples, const unsigned short *xform_distrib, randctx *rc) { int i; double4 p, q; @@ -164,10 +161,6 @@ int flam3_iterate(flam3_genome *cp, int n, int fuse, const double4 in, double4 * p = in; - /* Perform precalculations */ - for (i=0;i<cp->num_xforms;i++) - xform_precalc(cp,i); - for (i = -fuse; i < n; i++) { // fn = xform_distrib[ lastxf*CHOOSE_XFORM_GRAIN + (((unsigned)irand(rc)) % CHOOSE_XFORM_GRAIN)]; @@ -1859,6 +1852,10 @@ int flam3_estimate_bounding_box(flam3_genome *cp, double eps, int nsamples, xform_distrib = flam3_create_xform_distrib(cp); if (xform_distrib==NULL) return(-1); + for (unsigned int i = 0; i < cp->num_xforms; i++) { + xform_precalc (&cp->xform[i]); + } + bv=flam3_iterate(cp, nsamples, 20, start, points, xform_distrib, rc); free(xform_distrib); |