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Make bilinear weights always sum to one

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This commit is contained in:
Jakub Valtar
2015-08-10 15:03:33 -04:00
parent 66725a7c9d
commit 555c6e8ead
1 changed files with 5 additions and 5 deletions
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10
core/src/processing/core/PImage.java
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@@ -2416,7 +2416,7 @@ public class PImage implements PConstants, Cloneable {
private void filter_new_scanline() {
sX = srcXOffset;
fracV = srcYOffset & PREC_MAXVAL;
ifV = PREC_MAXVAL - fracV;
ifV = PREC_MAXVAL - fracV + 1;
v1 = (srcYOffset >> PRECISIONB) * iw;
v2 = low((srcYOffset >> PRECISIONB) + 1, ih1) * iw;
}
@@ -2424,11 +2424,11 @@ public class PImage implements PConstants, Cloneable {
private int filter_bilinear() {
fracU = sX & PREC_MAXVAL;
ifU = PREC_MAXVAL - fracU;
ifU = PREC_MAXVAL - fracU + 1;
ul = (ifU * ifV) >> PRECISIONB;
ll = (ifU * fracV) >> PRECISIONB;
ur = (fracU * ifV) >> PRECISIONB;
lr = (fracU * fracV) >> PRECISIONB;
ll = ifU - ul;
ur = ifV - ul;
lr = PREC_MAXVAL + 1 - ul - ll - ur;
u1 = (sX >> PRECISIONB);
u2 = low(u1 + 1, iw1);