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module: rect

Basic rectangle handling

This module contains typedefs, functions and macros for handling rectangles. Also included are macros to determine intersections and unions areas. (deds/rect.h)

Part of the deds library.

• MX_RECT

  A basic rectangle

  This type is a basic rectangle with an upper-left at x1,y1 and lower-right at x2, y2. (deds/rect.h)

  member: int x1 Left coordinate (deds/rect.h)

  member: int y1 Upper coordinate (deds/rect.h)

  member: int x2 Right coordinate (deds/rect.h)

  member: int y2 Lower coordinate (deds/rect.h)

• # define MXRECT_VALID(A)

  Is MX_RECT valid?

  This macro returns non-zero if the upper-left of the rectangle is above and to the right of the lower-left of the rectangle, zero otherwise. (deds/rect.h)

• # define MXRECT_INTERSECT(A, B, R)

  Find intersection of two rectangles

  This macro finds the intersection of two rectangles. (deds/rect.h)

• # define MXRECT_UNION(A, B, R)

  Union of two rectangles.

  (deds/rect.h)

• # define MXRECT_CONTAINS(R, X, Y)

  Point contained in MX_RECT

  This macro return non-zero if a given x,y point is indose the rectangel error, zero otherwise. (deds/rect.h)

• # define MXRECTS_OVERLAP(A, B)

  Do MX_RECT overlap?

  This macro return non-zero if two rectangels overlap, zero otherwise. (deds/rect.h)

• void mx_rect_move(MX_RECT* rrect, int x, int y)

  Move a MX_RECT

  This function moves a MX_REXT so that the upper left of the rectangle is at a given x,y, position. The size of the rectangle is not changed. (deds/rect.c)

• void mx_rect_resize(MX_RECT* rrect, int w, int h)

  Resize a MX_RECT

  This function resizes a MX_REXT to a given size. The upper left point of the rectangle does not change. (deds/rect.c)

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