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fped/gnuplot.c (gnuplot_arc): implemented drawing of arcs

This commit is contained in:
Werner Almesberger 2011-09-12 20:54:58 -03:00
parent e5d8fd87c3
commit 6dfbb51af9
1 changed files with 19 additions and 23 deletions
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42
gnuplot.c
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@ -11,7 +11,6 @@
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
@ -101,33 +100,30 @@ static void gnuplot_circ(FILE *file, const struct inst *inst)
static void gnuplot_arc(FILE *file, const struct inst *inst)
{
abort();
#if 0
struct coord p;
double a;
double cx, cy, r;
double a, tmp;
int n, i;
cx = units_to_mm(inst->base.x);
cy = units_to_mm(inst->base.y);
r = units_to_mm(inst->u.arc.r);
/*
* The documentation says:
* Xstart, Ystart, Xend, Yend, Angle, Width, Layer
*
* But it's really:
* Xcenter, Ycenter, Xend, Yend, ...
*/
p = rotate_r(inst->base, inst->u.arc.r, inst->u.arc.a2);
a = inst->u.arc.a2-inst->u.arc.a1;
while (a <= 0)
a += 360;
while (a > 360)
a -= 360;
fprintf(file, "DA %d %d %d %d %d %d %d\n",
units_to_kicad(inst->base.x),
-units_to_kicad(inst->base.y),
units_to_kicad(p.x),
-units_to_kicad(p.y),
(int) (a*10.0),
units_to_kicad(inst->u.arc.width),
layer_silk_top);
#endif
a =- 360;
n = ceil(2*r*M_PI/360*a/ARC_STEP);
if (n < 2)
n = 2;
for (i = 0; i <= n; i++) {
tmp = (inst->u.arc.a1+a/n*i)*M_PI/180;
fprintf(file, "%f %f\n", cx+r*cos(tmp), cy+r*sin(tmp));
}
fprintf(file, "\n");
}