3b97af5add
fix a comment or two as well Review URL: https://codereview.chromium.org/13934009 git-svn-id: http://skia.googlecode.com/svn/trunk@8822 2bbb7eff-a529-9590-31e7-b0007b416f81
64 lines
1.9 KiB
C
64 lines
1.9 KiB
C
/*
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* Copyright 2012 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkPathOpBounds_DEFINED
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#define SkPathOpBounds_DEFINED
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#include "SkPathOpsRect.h"
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#include "SkRect.h"
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// SkPathOpsBounds, unlike SkRect, does not consider a line to be empty.
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struct SkPathOpsBounds : public SkRect {
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static bool Intersects(const SkPathOpsBounds& a, const SkPathOpsBounds& b) {
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return a.fLeft <= b.fRight && b.fLeft <= a.fRight &&
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a.fTop <= b.fBottom && b.fTop <= a.fBottom;
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}
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// Note that add(), unlike SkRect::join() or SkRect::growToInclude()
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// does not treat the bounds of horizontal and vertical lines as
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// empty rectangles.
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void add(SkScalar left, SkScalar top, SkScalar right, SkScalar bottom) {
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if (left < fLeft) fLeft = left;
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if (top < fTop) fTop = top;
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if (right > fRight) fRight = right;
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if (bottom > fBottom) fBottom = bottom;
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}
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void add(const SkPathOpsBounds& toAdd) {
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add(toAdd.fLeft, toAdd.fTop, toAdd.fRight, toAdd.fBottom);
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}
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void add(const SkPoint& pt) {
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if (pt.fX < fLeft) fLeft = pt.fX;
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if (pt.fY < fTop) fTop = pt.fY;
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if (pt.fX > fRight) fRight = pt.fX;
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if (pt.fY > fBottom) fBottom = pt.fY;
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}
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// unlike isEmpty(), this permits lines, but not points
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// FIXME: unused for now
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bool isReallyEmpty() const {
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// use !<= instead of > to detect NaN values
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return !(fLeft <= fRight) || !(fTop <= fBottom)
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|| (fLeft == fRight && fTop == fBottom);
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}
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void setCubicBounds(const SkPoint a[4]);
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void setLineBounds(const SkPoint a[2]);
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void setQuadBounds(const SkPoint a[3]);
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void setPointBounds(const SkPoint& pt) {
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fLeft = fRight = pt.fX;
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fTop = fBottom = pt.fY;
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}
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typedef SkRect INHERITED;
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};
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extern void (SkPathOpsBounds::*SetCurveBounds[])(const SkPoint[]);
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#endif
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