diff options
Diffstat (limited to 'common/rect.h')
-rw-r--r-- | common/rect.h | 57 |
1 files changed, 43 insertions, 14 deletions
diff --git a/common/rect.h b/common/rect.h index d6badb1efd..dcf1c8b421 100644 --- a/common/rect.h +++ b/common/rect.h @@ -26,10 +26,45 @@ #ifndef COMMON_RECT_H #define COMMON_RECT_H -#include "common/shape.h" +#include "common/scummsys.h" +#include "common/util.h" namespace Common { +/*! @brief simple class for handling both 2D position and size + + This small class is an helper for position and size values. +*/ +struct Point { + int16 x; //!< The horizontal part of the point + int16 y; //!< The vertical part of the point + + Point() : x(0), y(0) {} + Point(const Point &p) : x(p.x), y(p.y) {} + explicit Point(int16 x1, int16 y1) : x(x1), y(y1) {} + Point & operator=(const Point & p) { x = p.x; y = p.y; return *this; }; + bool operator==(const Point & p) const { return x == p.x && y == p.y; }; + bool operator!=(const Point & p) const { return x != p.x || y != p.y; }; + + /** + * Return the square of the distance between this point and the point p. + * + * @param p the other point + * @return the distance between this and p + */ + uint sqrDist(const Point & p) const { + int diffx = ABS(p.x - x); + if (diffx >= 0x1000) + return 0xFFFFFF; + + int diffy = ABS(p.y - y); + if (diffy >= 0x1000) + return 0xFFFFFF; + + return uint(diffx*diffx + diffy*diffy); + } +}; + /*! @brief simple class for handling a rectangular zone. This small class is an helper for rectangles. @@ -40,7 +75,7 @@ namespace Common { Another very wide spread approach to rectangle classes treats (bottom,right) also as a part of the rectangle. - Conceptually, both are sound, but the approach we use saves many intermediate + Coneptually, both are sound, but the approach we use saves many intermediate computations (like computing the height in our case is done by doing this: height = bottom - top; while in the alternate system, it would be @@ -48,7 +83,7 @@ namespace Common { When writing code using our Rect class, always keep this principle in mind! */ -struct Rect : public Shape { +struct Rect { int16 top, left; //!< The point at the top left of the rectangle (part of the rect). int16 bottom, right; //!< The point at the bottom right of the rectangle (not part of the rect). @@ -57,8 +92,6 @@ struct Rect : public Shape { Rect(int16 x1, int16 y1, int16 x2, int16 y2) : top(y1), left(x1), bottom(y2), right(x2) { assert(isValidRect()); } - virtual ~Rect() {} - int16 width() const { return right - left; } int16 height() const { return bottom - top; } @@ -77,7 +110,7 @@ struct Rect : public Shape { @return true if the given position is inside this rectangle, false otherwise */ - virtual bool contains(int16 x, int16 y) const { + bool contains(int16 x, int16 y) const { return (left <= x) && (x < right) && (top <= y) && (y < bottom); } @@ -87,7 +120,7 @@ struct Rect : public Shape { @return true if the given point is inside this rectangle, false otherwise */ - virtual bool contains(const Point &p) const { + bool contains(const Point &p) const { return contains(p.x, p.y); } @@ -152,19 +185,19 @@ struct Rect : public Shape { return (left <= right && top <= bottom); } - virtual void moveTo(int16 x, int16 y) { + void moveTo(int16 x, int16 y) { bottom += y - top; right += x - left; top = y; left = x; } - virtual void translate(int16 dx, int16 dy) { + void translate(int16 dx, int16 dy) { left += dx; right += dx; top += dy; bottom += dy; } - virtual void moveTo(const Point &p) { + void moveTo(const Point &p) { moveTo(p.x, p.y); } @@ -178,10 +211,6 @@ struct Rect : public Shape { h /= 2; return Rect(cx - w, cy - h, cx + w, cy + h); } - - virtual Rect getBoundingRect() const { - return *this; - } }; } // End of namespace Common |