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feat(渲染优化): 完善渲染逻辑
build.yaml / build (push) Successful in 34s
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xiaoqidun
2026-07-16 11:15:29 +08:00
parent bc02d9e7f6
commit 6aa4e99530
5 changed files with 288 additions and 39 deletions
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ofdgo_renderer_layer.go
+22 -20
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@@ -30,7 +30,7 @@ func (r *Renderer) renderAnnotations(ctx *canvas.Context, pageID string, pageH f
box, _ := ParseBox(annot.Appearance.Boundary)
ctm := Matrix{a: 1, d: 1, e: box.X, f: box.Y}
for _, obj := range annot.Appearance.Objects {
r.renderObject(ctx, obj, pageH, nil, nil, 0, &ctm, false)
r.renderObject(ctx, obj, pageH, nil, nil, 0, &ctm, false, nil)
}
}
}
@@ -70,27 +70,27 @@ func (r *Renderer) renderLayer(ctx *canvas.Context, layer Layer, pageH float64,
defaultFill, defaultStroke, defaultLW = r.drawParamDefaults(layer.DrawParam, defaultFill, defaultStroke, defaultLW)
if len(layer.Objects) > 0 {
for _, obj := range layer.Objects {
r.renderObject(ctx, obj, pageH, defaultFill, defaultStroke, defaultLW, parentCTM, false)
r.renderObject(ctx, obj, pageH, defaultFill, defaultStroke, defaultLW, parentCTM, false, nil)
}
return
}
for _, textObj := range layer.TextObject {
r.renderText(ctx, textObj, pageH, defaultFill, defaultStroke, parentCTM, false)
r.renderText(ctx, textObj, pageH, defaultFill, defaultStroke, parentCTM, false, nil)
}
for _, pathObj := range layer.PathObject {
r.renderPath(ctx, pathObj, pageH, defaultFill, defaultStroke, defaultLW, parentCTM, false)
r.renderPath(ctx, pathObj, pageH, defaultFill, defaultStroke, defaultLW, parentCTM, false, nil)
}
for _, imgObj := range layer.ImageObject {
r.renderImage(ctx, imgObj, pageH, parentCTM, false)
r.renderImage(ctx, imgObj, pageH, parentCTM, false, nil)
}
for _, cgu := range layer.CompositeGraphicUnit {
r.renderCompositeGraphicUnit(ctx, cgu, pageH, defaultFill, defaultStroke, defaultLW, parentCTM, false)
r.renderCompositeGraphicUnit(ctx, cgu, pageH, defaultFill, defaultStroke, defaultLW, parentCTM, false, nil)
}
}
// renderCompositeGraphicUnit 渲染复合图元
// 入参: ctx 画布上下文, cgu 复合图元对象, pageH 页面高度, defaultFill 默认填充色, defaultStroke 默认描边色, defaultLW 默认线宽, parentCTM 父级CTM, boundaryInCTM 边界是否参与CTM变换
func (r *Renderer) renderCompositeGraphicUnit(ctx *canvas.Context, cgu CompositeGraphicUnit, pageH float64, defaultFill, defaultStroke color.Color, defaultLW float64, parentCTM *Matrix, boundaryInCTM bool) {
// 入参: ctx 画布上下文, cgu 复合图元对象, pageH 页面高度, defaultFill 默认填充色, defaultStroke 默认描边色, defaultLW 默认线宽, parentCTM 父级CTM, boundaryInCTM 边界是否参与CTM变换, parentClip 父级裁剪路径
func (r *Renderer) renderCompositeGraphicUnit(ctx *canvas.Context, cgu CompositeGraphicUnit, pageH float64, defaultFill, defaultStroke color.Color, defaultLW float64, parentCTM *Matrix, boundaryInCTM bool, parentClip *canvas.Path) {
if cgu.Visible != nil && !*cgu.Visible {
return
}
@@ -99,53 +99,55 @@ func (r *Renderer) renderCompositeGraphicUnit(ctx *canvas.Context, cgu Composite
if parentCTM != nil {
currentCTM = parentCTM.Multiply(currentCTM)
}
box, _ := ParseBox(cgu.Boundary)
clipPath := intersectClipPath(parentClip, r.buildClipPath(cgu.Clips, pageH, box.X, box.Y, currentCTM))
if cgu.ResourceID != "" {
if ref, ok := r.CompositeGraphicUnits[cgu.ResourceID]; ok {
refCopy := *ref
refCopy.Alpha = mergeAlpha(refCopy.Alpha, cgu.Alpha)
r.renderCompositeGraphicUnit(ctx, refCopy, pageH, defaultFill, defaultStroke, defaultLW, &currentCTM, true)
r.renderCompositeGraphicUnit(ctx, refCopy, pageH, defaultFill, defaultStroke, defaultLW, &currentCTM, true, clipPath)
}
}
defaultFill, defaultStroke, defaultLW = r.drawParamDefaults(cgu.DrawParam, defaultFill, defaultStroke, defaultLW)
if len(cgu.Objects) > 0 {
for _, obj := range cgu.Objects {
obj = mergeGraphicObjectAlpha(obj, cgu.Alpha)
r.renderObject(ctx, obj, pageH, defaultFill, defaultStroke, defaultLW, &currentCTM, boundaryInCTM)
r.renderObject(ctx, obj, pageH, defaultFill, defaultStroke, defaultLW, &currentCTM, boundaryInCTM, clipPath)
}
ctx.Pop()
return
}
for _, imgObj := range cgu.ImageObject {
imgObj.Alpha = mergeAlpha(imgObj.Alpha, cgu.Alpha)
r.renderImage(ctx, imgObj, pageH, &currentCTM, boundaryInCTM)
r.renderImage(ctx, imgObj, pageH, &currentCTM, boundaryInCTM, clipPath)
}
for _, pathObj := range cgu.PathObject {
pathObj.Alpha = mergeAlpha(pathObj.Alpha, cgu.Alpha)
r.renderPath(ctx, pathObj, pageH, defaultFill, defaultStroke, defaultLW, &currentCTM, boundaryInCTM)
r.renderPath(ctx, pathObj, pageH, defaultFill, defaultStroke, defaultLW, &currentCTM, boundaryInCTM, clipPath)
}
for _, textObj := range cgu.TextObject {
textObj.Alpha = mergeAlpha(textObj.Alpha, cgu.Alpha)
r.renderText(ctx, textObj, pageH, defaultFill, defaultStroke, &currentCTM, boundaryInCTM)
r.renderText(ctx, textObj, pageH, defaultFill, defaultStroke, &currentCTM, boundaryInCTM, clipPath)
}
for _, subCgu := range cgu.CompositeGraphicUnit {
subCgu.Alpha = mergeAlpha(subCgu.Alpha, cgu.Alpha)
r.renderCompositeGraphicUnit(ctx, subCgu, pageH, defaultFill, defaultStroke, defaultLW, &currentCTM, boundaryInCTM)
r.renderCompositeGraphicUnit(ctx, subCgu, pageH, defaultFill, defaultStroke, defaultLW, &currentCTM, boundaryInCTM, clipPath)
}
ctx.Pop()
}
// renderObject 渲染图形对象
// 入参: ctx 画布上下文, obj 图形对象, pageH 页面高度, defaultFill 默认填充色, defaultStroke 默认描边色, defaultLW 默认线宽, parentCTM 父级CTM, boundaryInCTM 边界是否参与CTM变换
func (r *Renderer) renderObject(ctx *canvas.Context, obj GraphicObject, pageH float64, defaultFill, defaultStroke color.Color, defaultLW float64, parentCTM *Matrix, boundaryInCTM bool) {
// 入参: ctx 画布上下文, obj 图形对象, pageH 页面高度, defaultFill 默认填充色, defaultStroke 默认描边色, defaultLW 默认线宽, parentCTM 父级CTM, boundaryInCTM 边界是否参与CTM变换, parentClip 父级裁剪路径
func (r *Renderer) renderObject(ctx *canvas.Context, obj GraphicObject, pageH float64, defaultFill, defaultStroke color.Color, defaultLW float64, parentCTM *Matrix, boundaryInCTM bool, parentClip *canvas.Path) {
switch obj.Type {
case "TextObject":
r.renderText(ctx, obj.TextObject, pageH, defaultFill, defaultStroke, parentCTM, boundaryInCTM)
r.renderText(ctx, obj.TextObject, pageH, defaultFill, defaultStroke, parentCTM, boundaryInCTM, parentClip)
case "PathObject":
r.renderPath(ctx, obj.PathObject, pageH, defaultFill, defaultStroke, defaultLW, parentCTM, boundaryInCTM)
r.renderPath(ctx, obj.PathObject, pageH, defaultFill, defaultStroke, defaultLW, parentCTM, boundaryInCTM, parentClip)
case "ImageObject":
r.renderImage(ctx, obj.ImageObject, pageH, parentCTM, boundaryInCTM)
r.renderImage(ctx, obj.ImageObject, pageH, parentCTM, boundaryInCTM, parentClip)
case "CompositeGraphicUnit", "CompositeObject":
r.renderCompositeGraphicUnit(ctx, obj.CompositeGraphicUnit, pageH, defaultFill, defaultStroke, defaultLW, parentCTM, boundaryInCTM)
r.renderCompositeGraphicUnit(ctx, obj.CompositeGraphicUnit, pageH, defaultFill, defaultStroke, defaultLW, parentCTM, boundaryInCTM, parentClip)
}
}