22 lines
872 B
C++
22 lines
872 B
C++
#pragma once
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#include <QImage>
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#include <QPointF>
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#include <QPainterPath>
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#include <QRect>
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#include <QSize>
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#include <QVector>
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namespace entity_cutout {
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QPainterPath pathFromWorldPolygon(const QVector<QPointF>& poly);
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QPointF polygonCentroid(const QVector<QPointF>& poly);
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QRect clampRectToImage(const QRect& r, const QSize& size);
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QImage extractEntityImage(const QImage& bg, const QVector<QPointF>& polyWorld, QPointF& outTopLeftWorld);
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void applyBlackFillToBackground(QImage& bgCutout, const QVector<QPointF>& polyWorld);
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/// 子图左上角与 cropWorldRect.topLeft() 对齐（世界坐标）；将 holePolysWorld 内像素置黑，供分割/吸附与画布一致。
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void applyBlackHolesToImageRegion(QImage& regionPremul, const QRect& cropWorldRect,
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const QVector<QVector<QPointF>>& holePolysWorld);
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} // namespace entity_cutout
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