diff options
Diffstat (limited to 'vendor/github.com/disintegration/imaging/resize.go')
| -rw-r--r-- | vendor/github.com/disintegration/imaging/resize.go | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/vendor/github.com/disintegration/imaging/resize.go b/vendor/github.com/disintegration/imaging/resize.go index 1659bbce8..cd5bfb5d8 100644 --- a/vendor/github.com/disintegration/imaging/resize.go +++ b/vendor/github.com/disintegration/imaging/resize.go @@ -19,6 +19,7 @@ func precomputeWeights(dstSize, srcSize int, filter ResampleFilter) [][]indexWei ru := math.Ceil(scale * filter.Support) out := make([][]indexWeight, dstSize) + tmp := make([]indexWeight, 0, dstSize*int(ru+2)*2) for v := 0; v < dstSize; v++ { fu := (float64(v)+0.5)*du - 0.5 @@ -37,14 +38,17 @@ func precomputeWeights(dstSize, srcSize int, filter ResampleFilter) [][]indexWei w := filter.Kernel((float64(u) - fu) / scale) if w != 0 { sum += w - out[v] = append(out[v], indexWeight{index: u, weight: w}) + tmp = append(tmp, indexWeight{index: u, weight: w}) } } if sum != 0 { - for i := range out[v] { - out[v][i].weight /= sum + for i := range tmp { + tmp[i].weight /= sum } } + + out[v] = tmp + tmp = tmp[len(tmp):] } return out |