THPDFDocComparison.CompareWithOptions

使用调用方选定的资源限制和渲染阈值，运行结构、页面或感知式渲染比较

声明

class function CompareWithOptions(DocA, DocB: THotPDF;
  Mode: THPDFComparisonMode;
  const Limits: THPDFStructuralCompareLimits;
  const RenderOptions: THPDFRenderedCompareOptions): AnsiString;

参数

• DocA 和 DocB are loaded documents
• Mode selects the comparison surfaces
• Limits bounds structural traversal, page count, and retained differences
• RenderOptions selects DPI, color metrics, thresholds, regions, overlays, and pixel budgets

结果

返回确定性的 JSON，包含规范化后的选项、整体完整性、差异，以及选择渲染时的逐页渲染度量

渲染和叠加错误按 fail-closed 计为报告的差异，并使比较不完整

示例

Limits := THPDFStructuralCompareLimits.Default;
RenderOptions := THPDFRenderedCompareOptions.Default;
RenderOptions.DPI := 144;
RenderOptions.ColorTolerance := 3;
RenderOptions.MinimumSimilarity := 0.995;
RenderOptions.MaxChangedPixelRatio := 0.001;
RenderOptions.GenerateHeatmaps := True;
RenderOptions.HeatmapDirectory := 'comparison-output';

Report := THPDFDocComparison.CompareWithOptions(
  BeforeDocument, AfterDocument, cmFull, Limits, RenderOptions);

另请参阅

THPDFRenderedCompareOptions · THPDFStructuralCompareLimits · 文档比较