xiaoqidun/ofdgo
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feat(归并文件): 归并文件下沉通用能力
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xiaoqidun committed 2026-10-14 10:40:08 +08:00
1 parent d07972346b
commit 70003486b8
37 files changed
+2386 -2509
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ofdgo_pdf_composite_pattern.go
+16 -16
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@@ -71,7 +71,7 @@ func (c *pdfCompositor) tiling(paint pdfgo.Paint, backdrop []pdfCompositePixel,
return nil, err
}
}
result[i] = pdfCompositePixel{values: pixel.values, alpha: pixel.alpha}
result[i] = pdfCompositePixel{Values: pixel.Values, Alpha: pixel.Alpha}
}
candidate := c.acquirePixels(len(backdrop))
defer c.releasePixels(candidate)
@@ -113,7 +113,7 @@ func (c *pdfCompositor) tiling(paint pdfgo.Paint, backdrop []pdfCompositePixel,
if disjoint {
initial = backdrop[index]
}
pixels[y*width+x] = pdfCompositePixel{values: initial.values, alpha: initial.alpha}
pixels[y*width+x] = pdfCompositePixel{Values: initial.Values, Alpha: initial.Alpha}
if cellChannels != nil {
cellChannels[y*width+x] = 0
if !disjoint {
@@ -136,7 +136,7 @@ func (c *pdfCompositor) tiling(paint pdfgo.Paint, backdrop []pdfCompositePixel,
for x := range width {
index := (top+y)*c.width + left + x
pdfCompositePatternCell(&result[index], backdrop[index], pixels[y*width+x], disjoint)
if channels != nil && pixels[y*width+x].shape != 0 {
if channels != nil && pixels[y*width+x].Shape != 0 {
if disjoint {
channels[index] |= cellChannels[y*width+x]
} else {
@@ -154,12 +154,12 @@ func (c *pdfCompositor) tiling(paint pdfgo.Paint, backdrop []pdfCompositePixel,
}
}
pixel := &result[i]
if pixel.effect != 0 {
if pixel.Effect != 0 {
for j := 0; j < space.Components(); j++ {
pixel.values[j] = math.Max(0, math.Min(1, (pixel.values[j]*pixel.alpha-backdrop[i].values[j]*backdrop[i].alpha*(1-pixel.effect))/pixel.effect))
pixel.Values[j] = math.Max(0, math.Min(1, (pixel.Values[j]*pixel.Alpha-backdrop[i].Values[j]*backdrop[i].Alpha*(1-pixel.Effect))/pixel.Effect))
}
}
pixel.alpha = pixel.effect
pixel.Alpha = pixel.Effect
}
complete = true
return result, nil
@@ -168,23 +168,23 @@ func (c *pdfCompositor) tiling(paint pdfgo.Paint, backdrop []pdfCompositePixel,
// pdfCompositePatternCell 合并互不重叠单元的覆盖贡献，避免相邻抗锯齿边缘重复混合
// 入参: target 图案累计结果, initial 原始背景, source 单元结果, disjoint 单元边界是否互不重叠
func pdfCompositePatternCell(target *pdfCompositePixel, initial, source pdfCompositePixel, disjoint bool) {
if source.shape == 0 {
if source.Shape == 0 {
return
}
if disjoint {
alpha := math.Max(0, math.Min(1, target.alpha+source.alpha-initial.alpha))
alpha := math.Max(0, math.Min(1, target.Alpha+source.Alpha-initial.Alpha))
if alpha != 0 {
for i := range target.values {
target.values[i] = (target.values[i]*target.alpha + source.values[i]*source.alpha - initial.values[i]*initial.alpha) / alpha
for i := range target.Values {
target.Values[i] = (target.Values[i]*target.Alpha + source.Values[i]*source.Alpha - initial.Values[i]*initial.Alpha) / alpha
}
}
target.alpha = alpha
target.effect = math.Min(1, target.effect+source.effect)
target.shape = math.Min(1, target.shape+source.shape)
target.Alpha = alpha
target.Effect = math.Min(1, target.Effect+source.Effect)
target.Shape = math.Min(1, target.Shape+source.Shape)
} else {
target.values, target.alpha = source.values, source.alpha
target.effect += source.effect * (1 - target.effect)
target.shape += source.shape * (1 - target.shape)
target.Values, target.Alpha = source.Values, source.Alpha
target.Effect += source.Effect * (1 - target.Effect)
target.Shape += source.Shape * (1 - target.Shape)
}
}