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reduced dithering on sequence wave redraw.

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Campbell Barton
2006-01-29 23:28:50 +00:00
parent 6dd3fd2a26
commit 07cde494c1
1 changed files with 10 additions and 11 deletions
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21
source/blender/src/drawseq.c
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@@ -202,7 +202,7 @@ static void drawmeta_contents(Sequence *seqm, float x1, float y1, float x2, floa
static void drawseqwave(Sequence *seq, float x1, float y1, float x2, float y2, int winx)
{
float f, height, midy, clipxmin, clipxmax, sample_step;
int offset, offset_next, sofs, eofs;
int offset, offset_next, sofs, eofs, i=0;
signed short* s;
bSound *sound;
int wavesample, wavesamplemin, wavesamplemax, subsample_step=4; /* used for finding the min and max wave peaks */
@@ -222,16 +222,15 @@ static void drawseqwave(Sequence *seq, float x1, float y1, float x2, float y2, i
clipxmin= MAX2(x1, G.v2d->cur.xmin);
clipxmax= MIN2(x2, G.v2d->cur.xmax);
/* Align the clipxmin to the sample step
this stops dithering when the wave is being clipped on the left hand side
With adaptive sample picking (subsample_step>4) this dosent work */
/* f=x1;
while (f<clipxmin)
f+=sample_step;
clipxmin=f; */
/* Stops dithering on redraw when clipxmin is offset. */
if (clipxmin != x1) {
clipxmin = (float) ((int)((clipxmin*sample_step)+(i*sample_step))) / sample_step;
while (clipxmin < x1) {
clipxmin = (float) ((int)((clipxmin*sample_step)+(i*sample_step))) / sample_step;
i+=1;
}
clipxmin = (float)((int)clipxmin); /* snap to int */
}
/* when the sample step is 4 every sample of the wave is evaluated for min and max
values used to draw the wave, however this is slow ehrn zoomed out