THPDFInkCoverageInfo Record
CMYK ink coverage measured over a rendered page: per-ink averages, maximum total area coverage, sampled pixel count and pixels above the TAC limit
Declaration
THPDFInkCoverageInfo= record
AverageCyanPercent: Double;
AverageMagentaPercent: Double;
AverageYellowPercent: Double;
AverageBlackPercent: Double;
MaximumTACPercent: Double;
PixelCount: Int64;
PixelsOverLimit: Int64;
end;Unit
HPDFDoc
Fields
| Field | Purpose |
|---|---|
AverageCyanPercent / AverageMagentaPercent / AverageYellowPercent / AverageBlackPercent | Page-average coverage of each ink in percent, converted from the rendered RGB bitmap; zero when no pixels have been sampled |
MaximumTACPercent | Highest per-pixel total area coverage (C+M+Y+K) observed on the page |
PixelCount | Number of pixels sampled across the rendered page bitmap |
PixelsOverLimit | Number of sampled pixels whose total area coverage went past the TACLimitPercent argument |
Usage notes
- Filled by
THotPDF.AnalyzeLoadedPageInkCoverage, which renders the page at the requested DPI before measuring; the record is reset on entry - Pick
TACLimitPercentfrom your print shop's specification (for example 300 percent for coated offset) and treatPixelsOverLimitas the press-risk count - Raising the DPI argument improves measurement fidelity at the price of a larger bitmap and slower analysis