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Diffstat (limited to 'app/cornu/bezctx_xtrkcad.c')
-rw-r--r--app/cornu/bezctx_xtrkcad.c217
1 files changed, 217 insertions, 0 deletions
diff --git a/app/cornu/bezctx_xtrkcad.c b/app/cornu/bezctx_xtrkcad.c
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index 0000000..1b902b2
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+++ b/app/cornu/bezctx_xtrkcad.c
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+/*
+xtrkcad_spiro - An adapter for Spiro splines within XtrkCAD.
+
+Copyright (C) XtrkCad.org, based on the Spiro Toolkit of Ralph Levien.
+
+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.
+
+*/
+
+
+#include "zmisc.h"
+#include "common.h"
+#include "bezctx.h"
+#include "bezctx_xtrkcad.h"
+#include "track.h"
+#include "tbezier.h"
+#include "i18n.h"
+#include "math.h"
+#include "utility.h"
+
+#define trkSeg(N) DYNARR_N(trkSeg_t,* bc->segsArray, N );
+
+
+typedef struct {
+ bezctx base;
+ dynArr_t * segsArray;
+ BOOL_T track;
+ BOOL_T is_open;
+ BOOL_T has_NAN;
+ BOOL_T draw_spots;
+ coOrd last_pos; // For moveTo
+ int ends[2]; //Start and End knot number
+
+} bezctx_xtrkcad;
+
+static void
+bezctx_xtrkcad_moveto(bezctx *z, double x, double y, int is_open) {
+ bezctx_xtrkcad *bc = (bezctx_xtrkcad *)z;
+ bc->last_pos.x = x;
+ bc->last_pos.y = y;
+ if (!(isfinite(x) && isfinite(y))) {
+ bc->has_NAN = TRUE;
+ return;
+ }
+}
+
+static void
+bezctx_xtrkcad_lineto(bezctx *z, double x, double y) {
+
+ bezctx_xtrkcad *bc = (bezctx_xtrkcad *)z;
+ if (!(isfinite(x) && isfinite(y))) {
+ bc->has_NAN = TRUE;
+ }
+ if (!bc->is_open || bc->has_NAN) {
+ bc->last_pos.x = x;
+ bc->last_pos.y = y;
+ return;
+ }
+ DYNARR_APPEND(trkSeg_t,* bc->segsArray,10);
+ trkSeg_p seg = &trkSeg(bc->segsArray->cnt-1);
+ seg->u.l.pos[0].x = bc->last_pos.x;
+ seg->u.l.pos[0].y = bc->last_pos.y;
+ seg->u.l.pos[1].x = x;
+ seg->u.l.pos[1].y = y;
+ seg->u.l.option = 0;
+ seg->width = 0.0;
+ seg->color = wDrawColorBlack;
+ seg->type = SEG_STRTRK;
+ if (seg->bezSegs.ptr) MyFree(seg->bezSegs.ptr);
+ seg->bezSegs.max =0;
+ seg->bezSegs.cnt = 0;
+ seg->bezSegs.ptr = NULL;
+ seg->u.l.angle = FindAngle(seg->u.l.pos[0],seg->u.l.pos[1]);
+ bc->last_pos.x = x;
+ bc->last_pos.y = y;
+
+
+}
+
+static void
+bezctx_xtrkcad_quadto(bezctx *z, double x1, double y1, double x2, double y2)
+{
+ bezctx_xtrkcad *bc = (bezctx_xtrkcad *)z;
+ if ((!isfinite(x1) || !isfinite(y1)
+ || !isfinite(x2) || !isfinite(y2))) {
+ bc->has_NAN = TRUE;
+ }
+ if (!bc->is_open || bc->has_NAN) {
+ bc->last_pos.x = x2;
+ bc->last_pos.y = y2;
+ return;
+ }
+ DYNARR_APPEND(trkSeg_t,* bc->segsArray,10);
+ trkSeg_p seg = &trkSeg(bc->segsArray->cnt-1);
+ seg->u.b.pos[0] = bc->last_pos;
+ seg->u.b.pos[1].x = x1;
+ seg->u.b.pos[1].y = y1;
+ seg->u.b.pos[2].x = x1;
+ seg->u.b.pos[2].y = y1;
+ seg->u.b.pos[3].x = x2;
+ seg->u.b.pos[3].y = y2;
+ seg->width = 0.0;
+ seg->color = wDrawColorBlack;
+ seg->type = SEG_BEZTRK;
+ if (seg->bezSegs.ptr) MyFree(seg->bezSegs.ptr);
+ seg->bezSegs.max =0;
+ seg->bezSegs.cnt = 0;
+ seg->bezSegs.ptr = NULL;
+ bc->last_pos.x = x2;
+ bc->last_pos.y = y2;
+
+ FixUpBezierSeg(seg->u.b.pos,seg,bc->track);
+}
+
+static void
+ bezctx_xtrkcad_curveto(bezctx *z, double x1, double y1, double x2, double y2,
+ double x3, double y3)
+{
+ bezctx_xtrkcad *bc = (bezctx_xtrkcad *)z;
+ if (!(isfinite(x1) && isfinite(y1)
+ && isfinite(x2) && isfinite(y2)
+ && isfinite(x3) && isfinite(y3))) {
+ bc->has_NAN = TRUE;
+ }
+ if (!bc->is_open || bc->has_NAN) {
+ bc->last_pos.x = x3;
+ bc->last_pos.y = y3;
+ return;
+ }
+ DYNARR_APPEND(trkSeg_t,* bc->segsArray,10);
+ trkSeg_p seg = &trkSeg(bc->segsArray->cnt-1);
+ seg->u.b.pos[0].x = bc->last_pos.x;
+ seg->u.b.pos[0].y = bc->last_pos.y;
+ seg->u.b.pos[1].x = x1;
+ seg->u.b.pos[1].y = y1;
+ seg->u.b.pos[2].x = x2;
+ seg->u.b.pos[2].y = y2;
+ seg->u.b.pos[3].x = x3;
+ seg->u.b.pos[3].y = y3;
+ seg->width = 0.0;
+ seg->color = wDrawColorBlack;
+ seg->type = SEG_BEZTRK;
+ if (seg->bezSegs.ptr) MyFree(seg->bezSegs.ptr);
+ seg->bezSegs.max = 0;
+ seg->bezSegs.cnt = 0;
+ seg->bezSegs.ptr = NULL;
+ bc->last_pos.x = x3;
+ bc->last_pos.y = y3;
+
+ FixUpBezierSeg(seg->u.b.pos,seg,bc->track);
+
+ if (bc->draw_spots) {
+ DYNARR_APPEND(trkSeg_t,* bc->segsArray,10);
+ seg = &trkSeg(bc->segsArray->cnt-1);
+ seg->type=SEG_FILCRCL;
+ seg->u.c.center.x = bc->last_pos.x;
+ seg->u.c.center.y = bc->last_pos.y;
+ seg->u.c.radius = 0.25;
+ seg->width = 0.0;
+ seg->color = wDrawColorBlack;
+ }
+
+}
+
+void
+bezctx_xtrkcad_mark_knot(bezctx *z, int knot_idx) {
+
+ bezctx_xtrkcad *bc = (bezctx_xtrkcad *)z;
+ if (knot_idx >= bc->ends[0]) bc->is_open = TRUE; //Only worry about segs inside our gap
+ if (knot_idx >= bc->ends[1]) bc->is_open = FALSE;
+
+}
+
+
+
+bezctx *
+new_bezctx_xtrkcad(dynArr_t * segArray, int ends[2], BOOL_T spots) {
+
+ bezctx_xtrkcad *result = znew(bezctx_xtrkcad, 1);
+
+ result->segsArray = segArray;
+ result->ends[0] = ends[0];
+ result->ends[1] = ends[1];
+
+ result->base.moveto = bezctx_xtrkcad_moveto;
+ result->base.lineto = bezctx_xtrkcad_lineto;
+ result->base.quadto = bezctx_xtrkcad_quadto;
+ result->base.curveto = bezctx_xtrkcad_curveto;
+ result->base.mark_knot = bezctx_xtrkcad_mark_knot;
+ result->is_open = FALSE;
+ result->has_NAN = FALSE;
+ result->draw_spots = spots;
+ result->track = TRUE;
+
+ return &result->base;
+}
+
+BOOL_T bezctx_xtrkcad_close(bezctx *z) {
+ bezctx_xtrkcad *bc = (bezctx_xtrkcad *)z;
+ if (bc->has_NAN) return FALSE;
+ return TRUE;
+}
+
+
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