gecko-dev/gfx/public/nsPoint.h

126 строки
3.9 KiB
C
Исходник Обычный вид История

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
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*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
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*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
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*/
#ifndef NSPOINT_H
#define NSPOINT_H
#include "nsCoord.h"
struct nsPoint {
nscoord x, y;
// Constructors
nsPoint() {}
nsPoint(const nsPoint& aPoint) {x = aPoint.x; y = aPoint.y;}
nsPoint(nscoord aX, nscoord aY) {x = aX; y = aY;}
void MoveTo(nscoord aX, nscoord aY) {x = aX; y = aY;}
void MoveBy(nscoord aDx, nscoord aDy) {x += aDx; y += aDy;}
// Overloaded operators. Note that '=' isn't defined so we'll get the
// compiler generated default assignment operator
PRBool operator==(const nsPoint& aPoint) const {
return (PRBool) ((x == aPoint.x) && (y == aPoint.y));
}
PRBool operator!=(const nsPoint& aPoint) const {
return (PRBool) ((x != aPoint.x) || (y != aPoint.y));
}
nsPoint operator+(const nsPoint& aPoint) const {
return nsPoint(x + aPoint.x, y + aPoint.y);
}
nsPoint operator-(const nsPoint& aPoint) const {
return nsPoint(x - aPoint.x, y - aPoint.y);
}
nsPoint& operator+=(const nsPoint& aPoint) {
x += aPoint.x;
y += aPoint.y;
return *this;
}
nsPoint& operator-=(const nsPoint& aPoint) {
x -= aPoint.x;
y -= aPoint.y;
return *this;
}
};
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/** ---------------------------------------------------
* A point structure with floats for the Quadratic bezier curve
* @update 4/27/2000 dwc
*/
struct nsFloatPoint {
float x, y;
// Constructors
nsFloatPoint() {}
nsFloatPoint(const nsFloatPoint& aPoint) {x = aPoint.x; y = aPoint.y;}
nsFloatPoint(float aX, float aY) {x = aX; y = aY;}
void MoveTo(float aX, float aY) {x = aX; y = aY;}
void MoveTo(nscoord aX, nscoord aY) {x = (float)aX; y = (float)aY;}
void MoveBy(float aDx, float aDy) {x += aDx; y += aDy;}
// Overloaded operators. Note that '=' isn't defined so we'll get the
// compiler generated default assignment operator
PRBool operator==(const nsFloatPoint& aPoint) const {
return (PRBool) ((x == aPoint.x) && (y == aPoint.y));
}
PRBool operator!=(const nsFloatPoint& aPoint) const {
return (PRBool) ((x != aPoint.x) || (y != aPoint.y));
}
nsFloatPoint operator+(const nsFloatPoint& aPoint) const {
return nsFloatPoint(x + aPoint.x, y + aPoint.y);
}
nsFloatPoint operator-(const nsFloatPoint& aPoint) const {
return nsFloatPoint(x - aPoint.x, y - aPoint.y);
}
nsFloatPoint& operator+=(const nsFloatPoint& aPoint) {
x += aPoint.x;
y += aPoint.y;
return *this;
}
nsFloatPoint& operator-=(const nsFloatPoint& aPoint) {
x -= aPoint.x;
y -= aPoint.y;
return *this;
}
};
/** ---------------------------------------------------
* A special type of point which also add the capability to tell if a point is on
* the curve.. or off of the curve for a path
* @update 03/29/00 dwc
*/
struct nsPathPoint: public nsFloatPoint{
PRBool mIsOnCurve;
// Constructors
nsPathPoint() {}
nsPathPoint(const nsPathPoint& aPoint) {x = aPoint.x; y = aPoint.y;mIsOnCurve=aPoint.mIsOnCurve;}
nsPathPoint(float aX, float aY) {x = aX; y = aY;mIsOnCurve=PR_TRUE;}
nsPathPoint(float aX, float aY,PRBool aIsOnCurve) {x = aX; y = aY;mIsOnCurve=aIsOnCurve;}
};
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#endif /* NSPOINT_H */