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/*
* COPYRIGHT
*
* pcb-rnd, interactive printed circuit board design
* Copyright (C) 2017 Tibor 'Igor2' Palinkas
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Contact:
* Project page: http://repo.hu/projects/pcb-rnd
* lead developer: http://repo.hu/projects/pcb-rnd/contact.html
* mailing list: pcb-rnd (at) list.repo.hu (send "subscribe")
*/
#define TRX(x) (x)
#define TRY(y) (PCB->hidlib.size_y - (y))
static void dxf_draw_handle(dxf_ctx_t *ctx)
{
ctx->drawn_objs++;
ctx->handle++;
fprintf(ctx->f, "5\n%lu\n", ctx->handle);
}
static void dxf_draw_line_props(dxf_ctx_t *ctx, rnd_hid_gc_t gc)
{
fprintf(ctx->f, "100\nAcDbEntity\n");
fprintf(ctx->f, "8\n%s\n", ctx->layer_name); /* layer name */
fprintf(ctx->f, "6\nByLayer\n"); /* linetype name */
fprintf(ctx->f, "62\n256\n"); /* color; 256=ByLayer */
/* lineweight enum (width in 0.01mm) */
if (ctx->enable_force_thin && ctx->force_thin)
fprintf(ctx->f, "370\n1\n");
else
fprintf(ctx->f, "370\n%d\n", (int)rnd_round(RND_COORD_TO_MM(gc->width)*100.0));
}
static void dxf_hatch_pre(dxf_ctx_t *ctx, rnd_hid_gc_t gc, int n_coords)
{
fprintf(ctx->f, "0\nHATCH\n");
dxf_draw_handle(ctx);
dxf_draw_line_props(ctx, gc);
fprintf(ctx->f, "100\nAcDbHatch\n");
fprintf(ctx->f, "10\n0\n20\n0\n30\n0\n"); /* elevation */
fprintf(ctx->f, "210\n0\n220\n0\n230\n1\n"); /* extrusion */
fprintf(ctx->f, "2\nSOLID\n");
fprintf(ctx->f, "70\n1\n"); /* solid fill */
fprintf(ctx->f, "71\n0\n"); /* associativity: non */
fprintf(ctx->f, "91\n1\n"); /* number of loops (contours) */
fprintf(ctx->f, "92\n0\n"); /* boundary path type: default */
fprintf(ctx->f, "93\n%d\n", n_coords);
}
static void dxf_hatch_post(dxf_ctx_t *ctx)
{
fprintf(ctx->f, "97\n0\n"); /* number of source boundaries */
fprintf(ctx->f, "75\n0\n"); /* hatch style: normal, odd parity */
fprintf(ctx->f, "76\n1\n"); /* pattern type: predefined */
fprintf(ctx->f, "98\n0\n"); /* number of seed points */
}
static void dxf_draw_line(rnd_hid_gc_t gc, rnd_coord_t x1, rnd_coord_t y1, rnd_coord_t x2, rnd_coord_t y2)
{
dxf_ctx_t *ctx = &dxf_ctx;
fprintf(ctx->f, "0\nLINE\n");
dxf_draw_handle(ctx);
dxf_draw_line_props(ctx, gc);
fprintf(ctx->f, "100\nAcDbLine\n");
rnd_fprintf(ctx->f, "10\n%mm\n20\n%mm\n", TRX(x1), TRY(y1));
rnd_fprintf(ctx->f, "11\n%mm\n21\n%mm\n", TRX(x2), TRY(y2));
}
static void dxf_fill_circle(rnd_hid_gc_t gc, rnd_coord_t cx, rnd_coord_t cy, rnd_coord_t r)
{
dxf_ctx_t *ctx = &dxf_ctx;
fprintf(ctx->f, "0\nCIRCLE\n");
dxf_draw_handle(ctx);
dxf_draw_line_props(ctx, &thin);
/* contour, just in case the hatch fails */
if (ctx->drill_contour) {
fprintf(ctx->f, "100\nAcDbCircle\n");
rnd_fprintf(ctx->f, "10\n%mm\n20\n%mm\n", TRX(cx), TRY(cy));
rnd_fprintf(ctx->f, "40\n%mm\n", r);
}
/* hatch for fill circle: use it for copper or if explicitly requested */
if (ctx->drill_fill || !gc->drawing_hole) {
dxf_hatch_pre(ctx, &thin, 1);
rnd_fprintf(ctx->f, "72\n2\n"); /* circular contour */
rnd_fprintf(ctx->f, "10\n%mm\n20\n%mm\n", TRX(cx), TRY(cy));
rnd_fprintf(ctx->f, "40\n%mm\n", r);
rnd_fprintf(ctx->f, "50\n0\n");
rnd_fprintf(ctx->f, "51\n360\n");
rnd_fprintf(ctx->f, "73\n1\n"); /* is closed */
dxf_hatch_post(ctx);
}
}
static void dxf_draw_arc(rnd_hid_gc_t gc, rnd_coord_t cx, rnd_coord_t cy, rnd_coord_t width, rnd_coord_t height, rnd_angle_t start_angle, rnd_angle_t delta_angle)
{
rnd_angle_t end_angle, tmp;
dxf_ctx_t *ctx = &dxf_ctx;
end_angle = start_angle + delta_angle;
if (delta_angle < 0) {
tmp = start_angle;
start_angle = end_angle;
end_angle = tmp;
}
start_angle -= 180;
end_angle -= 180;
if (end_angle >= 360)
end_angle -= 360;
if (end_angle < 0)
end_angle += 360;
fprintf(ctx->f, "0\nARC\n");
dxf_draw_handle(ctx);
dxf_draw_line_props(ctx, gc);
fprintf(ctx->f, "100\nAcDbCircle\n");
rnd_fprintf(ctx->f, "10\n%mm\n20\n%mm\n", TRX(cx), TRY(cy));
rnd_fprintf(ctx->f, "40\n%mm\n", (width + height)/2);
fprintf(ctx->f, "100\nAcDbArc\n");
fprintf(ctx->f, "50\n%f\n", start_angle);
fprintf(ctx->f, "51\n%f\n", end_angle);
}
static void dxf_fill_polygon_offs(rnd_hid_gc_t gc, int n_coords, rnd_coord_t *x, rnd_coord_t *y, rnd_coord_t dx, rnd_coord_t dy)
{
dxf_ctx_t *ctx = &dxf_ctx;
int n, to;
dxf_ctx.drawn_objs++;
#if HATCH_NEEDS_BBOX
rnd_coord_t x_min, x_max, y_min, y_max;
x_max = x_min = *x + dx;
y_max = y_min = *y + dy;
for(n = 1; n < n_coords; n++) {
if (x[n] < x_min) x_min = x[n] + dx;
if (x[n] > x_max) x_max = x[n] + dx;
if (y[n] < y_min) y_min = y[n] + dy;
if (y[n] > y_max) y_max = y[n] + dy;
}
#endif
if (ctx->poly_fill) {
dxf_hatch_pre(ctx, &thin, n_coords);
for(n = 0; n < n_coords; n++) {
to = n+1;
if (to == n_coords)
to = 0;
fprintf(ctx->f, "72\n1\n"); /* edge=line */
rnd_fprintf(ctx->f, "10\n%mm\n20\n%mm\n", TRX(x[n]+dx), TRY(y[n]+dy));
rnd_fprintf(ctx->f, "11\n%mm\n21\n%mm\n", TRX(x[to]+dx), TRY(y[to]+dy));
}
dxf_hatch_post(ctx);
}
if (ctx->poly_contour) {
for(n = 0; n < n_coords; n++) {
to = n+1;
if (to == n_coords)
to = 0;
dxf_draw_line(&thin, x[n]+dx, y[n]+dy, x[to]+dx, y[to]+dy);
}
}
}
static void dxf_fill_polygon(rnd_hid_gc_t gc, int n_coords, rnd_coord_t *x, rnd_coord_t *y)
{
dxf_fill_polygon_offs(gc, n_coords, x, y, 0, 0);
}
static void dxf_gen_layer(dxf_ctx_t *ctx, const char *name)
{
fprintf(ctx->f, "0\nLAYER\n");
dxf_draw_handle(ctx);
fprintf(ctx->f, "330\n2\n"); /* BLOCK_RECORD handle */
fprintf(ctx->f, "100\nAcDbSymbolTableRecord\n");
fprintf(ctx->f, "100\nAcDbLayerTableRecord\n");
fprintf(ctx->f, "2\n%s\n", name);
fprintf(ctx->f, "70\n0\n"); /* flags */
fprintf(ctx->f, "62\n7\n"); /* color */
fprintf(ctx->f, "6\nCONTINUOUS\n"); /* default line type */
fprintf(ctx->f, "370\n15\n"); /* default line width in 0.01mm */
fprintf(ctx->f, "390\nF\n"); /* plot style */
}
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