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cameo: added "rotate" command

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- lang.l, lang.y (rotate): added command "rotate", with cumulative
  rotation
- README: documented "rotate"
- README: corrected typo in description of the translation commands
This commit is contained in:
Werner Almesberger
2011-01-03 01:25:42 -03:00
parent 45ee739c3b
commit 6f30bab648
3 changed files with 46 additions and 5 deletions
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38
cameo/lang.y
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@@ -13,6 +13,8 @@
#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include "path.h"
#include "ops.h"
@@ -23,7 +25,8 @@
#include "y.tab.h"
static double xo = 0, yo = 0, zo = 0;
static double xo = 0, yo = 0, zo = 0; /* origin */
static double rot = 0;
static struct path *paths = NULL;
static struct path *remain = NULL;
@@ -55,6 +58,27 @@ static void translate(struct path *list, double x, double y, double z)
}
static void rotate(struct path *list, double angle)
{
double m[2][2], tmp;
struct point *p;
angle = angle/180.0*M_PI;
m[0][0] = cos(angle);
m[0][1] = -sin(angle);
m[1][0] = -m[0][1];
m[1][1] = m[0][0];
while (list) {
for (p = list->first; p; p = p->next) {
tmp = p->x*m[0][0]+p->y*m[0][1];
p->y = p->x*m[1][0]+p->y*m[1][1];
p->x = tmp;
}
list = list->next;
}
}
static double ref_pick_1(int ref, double a, double b)
{
switch (ref) {
@@ -151,7 +175,7 @@ static struct path **classify(struct path **anchor, struct path *path)
%token TOK_ALIGN TOK_ARRAY TOK_CLEAR TOK_DRILL TOK_EMPTY
%token TOK_MILL TOK_OFFSET TOK_OPTIMIZE TOK_REMAINDER TOK_RESET
%token TOK_TRANSLATE TOK_Z
%token TOK_ROTATE TOK_TRANSLATE TOK_Z
%token TOK_APPEND TOK_GERBER TOK_GNUPLOT TOK_EXCELLON TOK_WRITE
%token TOK_DOG TOK_INSIDE
@@ -201,7 +225,7 @@ command:
}
| TOK_RESET
{
xo = yo = 0;
xo = yo = rot = 0;
}
| TOK_OFFSET offset_options
{
@@ -212,6 +236,11 @@ command:
{
paths = optimize_paths(paths);
}
| TOK_ROTATE number
{
rotate(paths, $2);
rot += $2;
}
| TOK_TRANSLATE dimen dimen
{
translate(paths, $2, $3, 0);
@@ -231,6 +260,7 @@ command:
struct path *new;
new = gerber_read($3, $2/2);
rotate(new, rot);
translate(new, xo, yo, 0);
add_paths(new);
}
@@ -239,6 +269,7 @@ command:
struct path *new;
new = gnuplot_read($3, $2/2);
rotate(new, rot);
translate(new, xo, yo, 0);
add_paths(new);
}
@@ -247,6 +278,7 @@ command:
struct path *new;
new = excellon_read($2);
rotate(new, rot);
translate(new, xo, yo, 0);
add_paths(new);
}