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rectclip.c - sam - An updated version of the sam text editor. |
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git clone git://vernunftzentrum.de/sam.git |
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rectclip.c (693B) |
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1 /* Copyright (c) 1998 Lucent Technologies - All rights reserved. */ |
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2 #include <u.h> |
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3 #include <libg.h> |
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4 |
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5 int rectclip(Rectangle *rp, Rectangle b) /* first by reference, s… |
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6 { |
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7 Rectangle *bp = &b; |
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8 /* |
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9 * Expand rectXrect() in line for speed |
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10 */ |
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11 if((rp->min.x<bp->max.x && bp->min.x<rp->max.x && |
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12 rp->min.y<bp->max.y && bp->min.y<rp->max.y)==0) |
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13 return 0; |
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14 /* They must overlap */ |
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15 if(rp->min.x < bp->min.x) |
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16 rp->min.x = bp->min.x; |
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17 if(rp->min.y < bp->min.y) |
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18 rp->min.y = bp->min.y; |
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19 if(rp->max.x > bp->max.x) |
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20 rp->max.x = bp->max.x; |
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21 if(rp->max.y > bp->max.y) |
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22 rp->max.y = bp->max.y; |
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23 return 1; |
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24 } |
