/***********************************************************************
DrawLinks() - this function draws the current link hierarchy as stated
in the data structure 'data'.
***********************************************************************/
int
DrawLinks(MyProgram *data)
{
int i;
if (data->redraw == TRUE)
SetDrawMode(SANE_XOR);
/* draw each link
*/
for (i = 0; i < data->num_links; i++)
DrawLine(data->links[i].start.x, InvertY(data->links[i].start.y),
data->links[i].visend.x, InvertY(data->links[i].visend.y));
/* draw end effector
*/
switch(data->end_effect.type) {
case ENDEFF_SQUARE:
DrawFilledBox(data->end_effect.center.x,
InvertY(data->end_effect.center.y),
ENDEFF_SIZE, ENDEFF_SIZE);
break;
case ENDEFF_CIRCLE:
DrawFilledArc(data->end_effect.center.x,
InvertY(data->end_effect.center.y),
ENDEFF_SIZE, ENDEFF_SIZE, 0, 360);
break;
case ENDEFF_TRIANGLE:
break;
default:
break;
}
SetDrawMode(GXcopy);
return(0);
} /* end of DrawLinks() */
void draw_object(Canvas *canvas, Quark *q)
{
VPoint anchor;
DObject *o = object_get_data(q);
if (o == NULL) {
return;
}
if (Apoint2Vpoint(q, &o->ap, &anchor) != RETURN_SUCCESS) {
return;
}
anchor.x += o->offset.x;
anchor.y += o->offset.y;
setclipping(canvas, FALSE);
activate_bbox(canvas, BBOX_TYPE_TEMP, TRUE);
reset_bbox(canvas, BBOX_TYPE_TEMP);
switch (o->type) {
case DO_LINE:
{
DOLineData *l = (DOLineData *) o->odata;
VPoint vp1;
double x, y, co, si;
x = l->vector.x;
y = l->vector.y;
co = cos(M_PI/180.0*o->angle);
si = sin(M_PI/180.0*o->angle);
vp1.x = anchor.x + x*co - y*si;
vp1.y = anchor.y + x*si + y*co;
setline(canvas, &o->line);
DrawLine(canvas, &anchor, &vp1);
switch (l->arrow_end) {
case ARROW_AT_NONE:
break;
case ARROW_AT_BEGINNING:
draw_arrowhead(canvas, &vp1, &anchor, &l->arrow,
&o->line.pen, &o->fillpen);
break;
case ARROW_AT_END:
draw_arrowhead(canvas, &anchor, &vp1, &l->arrow,
&o->line.pen, &o->fillpen);
break;
case ARROW_AT_BOTH:
draw_arrowhead(canvas, &vp1, &anchor, &l->arrow,
&o->line.pen, &o->fillpen);
draw_arrowhead(canvas, &anchor, &vp1, &l->arrow,
&o->line.pen, &o->fillpen);
break;
}
}
break;
case DO_BOX:
{
DOBoxData *b = (DOBoxData *) o->odata;
if (o->angle == 0.0) {
VPoint vp1, vp2;
vp1.x = anchor.x - b->width/2;
vp2.x = anchor.x + b->width/2;
vp1.y = anchor.y - b->height/2;
vp2.y = anchor.y + b->height/2;
setpen(canvas, &o->fillpen);
DrawFilledRect(canvas, &vp1, &vp2);
setline(canvas, &o->line);
DrawRect(canvas, &vp1, &vp2);
} else {
VPoint vps[4];
double x, y, co, si;
x = b->width/2;
y = b->height/2;
co = cos(M_PI/180.0*o->angle);
si = sin(M_PI/180.0*o->angle);
vps[0].x = anchor.x + x*co - y*si;
vps[0].y = anchor.y + x*si + y*co;
vps[1].x = anchor.x - x*co - y*si;
vps[1].y = anchor.y - x*si + y*co;
vps[2].x = anchor.x - x*co + y*si;
vps[2].y = anchor.y - x*si - y*co;
vps[3].x = anchor.x + x*co + y*si;
vps[3].y = anchor.y + x*si - y*co;
setpen(canvas, &o->fillpen);
DrawPolygon(canvas, vps, 4);
setline(canvas, &o->line);
DrawPolyline(canvas, vps, 4, POLYLINE_CLOSED);
}
}
break;
case DO_ARC:
{
VPoint vp1, vp2;
DOArcData *e = (DOArcData *) o->odata;
vp1.x = anchor.x - e->width/2;
vp2.x = anchor.x + e->width/2;
vp1.y = anchor.y - e->height/2;
vp2.y = anchor.y + e->height/2;
setpen(canvas, &o->fillpen);
/* FIXME: implement true ellipse rotation! */
DrawFilledArc(canvas, &vp1, &vp2, e->angle1 + o->angle, e->angle2,
e->closure_type);
setline(canvas, &o->line);
DrawArc(canvas, &vp1, &vp2, e->angle1 + o->angle, e->angle2,
e->closure_type, e->draw_closure);
}
break;
case DO_NONE:
break;
}
get_bbox(canvas, BBOX_TYPE_TEMP, &o->bb);
}
