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Do internal path manipulations in design units.

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blackpixel() and whitepixel() now produce paths in design units, so
emit_path() doesn't have any transformation to do.
This commit is contained in:
Ben Harris 2013-12-26 14:17:02 +00:00
parent 702db19779
commit f577594a51
1 changed files with 29 additions and 23 deletions
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52
bedstead.c
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@ -116,6 +116,10 @@
#define XPIX 100
#define YPIX 100
/* Position of diagonal lines within pixels */
#define XQTR (XPIX/4)
#define YQTR (YPIX/4)
void doprologue(void);
void dochar(char const data[YSIZE], unsigned flags);
@ -1279,7 +1283,7 @@ dolookups(struct glyph const *g)
}
typedef struct vec {
signed char x, y;
int x, y;
} vec;
typedef struct point {
@ -1481,7 +1485,7 @@ emit_path()
started = 1;
do {
printf(" %d %d %s 1\n",
p->v.x*XPIX/4, p->v.y*YPIX/4 - 3*YPIX,
p->v.x, p->v.y - 3*YPIX,
p == &points[i] && p->next ? "m" : "l");
p1 = p->next;
p->prev = p->next = NULL;
@ -1495,46 +1499,48 @@ emit_path()
static void
blackpixel(int x, int y, int bl, int br, int tr, int tl)
{
x *= 4; y *= 4;
x *= XPIX; y *= YPIX;
if (bl) moveto(x, y);
else { moveto(x+1, y); lineto(x, y+1); }
if (tl) lineto(x, y+4);
else { lineto(x, y+3); lineto(x+1, y+4); }
if (tr) lineto(x+4, y+4);
else { lineto(x+3, y+4); lineto(x+4, y+3); }
if (br) lineto(x+4, y);
else { lineto(x+4, y+1); lineto(x+3, y); }
else { moveto(x+XQTR, y); lineto(x, y+YQTR); }
if (tl) lineto(x, y+YPIX);
else { lineto(x, y+YPIX-YQTR); lineto(x+XQTR, y+YPIX); }
if (tr) lineto(x+XPIX, y+YPIX);
else { lineto(x+XPIX-XQTR, y+YPIX); lineto(x+XPIX, y+YPIX-YQTR); }
if (br) lineto(x+XPIX, y);
else { lineto(x+XPIX, y+YQTR); lineto(x+XPIX-XQTR, y); }
closepath();
}
static void
whitepixel(int x, int y, int bl, int br, int tr, int tl)
{
x *= 4; y *= 4;
x *= XPIX; y *= YPIX;
if (bl) {
moveto(x, y); lineto(x, y+3);
if (br) { lineto(x+2, y+1); lineto(x+1, y); }
else lineto(x+3, y);
moveto(x, y); lineto(x, y+YPIX-YQTR);
if (br) { lineto(x+XPIX/2, y+YQTR); lineto(x+XQTR, y); }
else lineto(x+XPIX-XQTR, y);
closepath();
}
if (tl) {
moveto(x, y+4); lineto(x+3, y+4);
if (bl) { lineto(x+1, y+2); lineto(x, y+3); }
else lineto(x, y+1);
moveto(x, y+YPIX); lineto(x+XPIX-XQTR, y+YPIX);
if (bl) { lineto(x+XQTR, y+YPIX/2); lineto(x, y+YPIX-YQTR); }
else lineto(x, y+XQTR);
closepath();
}
if (tr) {
moveto(x+4, y+4); lineto(x+4, y+1);
if (tl) { lineto(x+2, y+3); lineto(x+3, y+4); }
else lineto(x+1, y+4);
moveto(x+XPIX, y+YPIX); lineto(x+XPIX, y+YQTR);
if (tl) { lineto(x+XPIX/2, y+YPIX-YQTR);
lineto(x+XPIX-XQTR, y+YPIX); }
else lineto(x+XQTR, y+YPIX);
closepath();
}
if (br) {
moveto(x+4, y); lineto(x+1, y);
if (tr) { lineto(x+3, y+2); lineto(x+4, y+1); }
else lineto(x+4, y+3);
moveto(x+XPIX, y); lineto(x+XQTR, y);
if (tr) { lineto(x+XPIX-XQTR, y+YPIX/2);
lineto(x+XPIX, y+YQTR); }
else lineto(x+XPIX, y+YPIX-YQTR);
closepath();
}
}