void
sp_sel_trans_transform (SPSelTrans * seltrans, NRMatrixD *affine, NRPointF *norm)
{
NRMatrixD n2p, p2n;
g_return_if_fail (seltrans->grabbed);
g_return_if_fail (!seltrans->empty);
nr_matrix_d_set_translate (&n2p, norm->x, norm->y);
nr_matrix_d_set_translate (&p2n, -norm->x, -norm->y);
nr_matrix_multiply_ddd (affine, &p2n, affine);
nr_matrix_multiply_ddd (affine, affine, &n2p);
if (seltrans->show == SP_SELTRANS_SHOW_CONTENT) {
// update the content
int i;
for (i = 0; i < seltrans->nitems; i++) {
NRMatrixF i2dnew;
nr_matrix_multiply_ffd (&i2dnew, &seltrans->transforms[i], affine);
sp_item_set_i2d_affine (seltrans->items[i], &i2dnew);
}
} else {
NRPointF p[4];
/* update the outline */
p[0].x = NR_MATRIX_DF_TRANSFORM_X (affine, seltrans->box.x0, seltrans->box.y0);
p[0].y = NR_MATRIX_DF_TRANSFORM_Y (affine, seltrans->box.x0, seltrans->box.y0);
p[1].x = NR_MATRIX_DF_TRANSFORM_X (affine, seltrans->box.x1, seltrans->box.y0);
p[1].y = NR_MATRIX_DF_TRANSFORM_Y (affine, seltrans->box.x1, seltrans->box.y0);
p[2].x = NR_MATRIX_DF_TRANSFORM_X (affine, seltrans->box.x1, seltrans->box.y1);
p[2].y = NR_MATRIX_DF_TRANSFORM_Y (affine, seltrans->box.x1, seltrans->box.y1);
p[3].x = NR_MATRIX_DF_TRANSFORM_X (affine, seltrans->box.x0, seltrans->box.y1);
p[3].y = NR_MATRIX_DF_TRANSFORM_Y (affine, seltrans->box.x0, seltrans->box.y1);
sp_ctrlline_set_coords (SP_CTRLLINE (seltrans->l1), p[0].x, p[0].y, p[1].x, p[1].y);
sp_ctrlline_set_coords (SP_CTRLLINE (seltrans->l2), p[1].x, p[1].y, p[2].x, p[2].y);
sp_ctrlline_set_coords (SP_CTRLLINE (seltrans->l3), p[2].x, p[2].y, p[3].x, p[3].y);
sp_ctrlline_set_coords (SP_CTRLLINE (seltrans->l4), p[3].x, p[3].y, p[0].x, p[0].y);
}
seltrans->current = *affine;
seltrans->changed = TRUE;
sp_sel_trans_update_handles (seltrans);
}
/**
Create a line from p1 to p2 and add it to the lines list
*/
void
VPDrag::addLine (Geom::Point p1, Geom::Point p2, guint32 rgba)
{
SPCanvasItem *line = sp_canvas_item_new(sp_desktop_controls(inkscape_active_desktop()), SP_TYPE_CTRLLINE, NULL);
sp_ctrlline_set_coords(SP_CTRLLINE(line), p1, p2);
if (rgba != VP_LINE_COLOR_FILL) // fill is the default, so don't set color for it to speed up redraw
sp_ctrlline_set_rgba32 (SP_CTRLLINE(line), rgba);
sp_canvas_item_show (line);
this->lines = g_slist_append (this->lines, line);
}
static void
spdc_pen_set_ctrl (SPPenContext *pc, NRPointF *p, guint state)
{
SPDrawContext *dc;
dc = SP_DRAW_CONTEXT (pc);
sp_canvas_item_show (pc->c1);
sp_canvas_item_show (pc->cl1);
if (dc->npoints == 2) {
dc->p[1] = *p;
sp_canvas_item_hide (pc->c0);
sp_canvas_item_hide (pc->cl0);
sp_ctrl_moveto (SP_CTRL (pc->c1), dc->p[1].x, dc->p[1].y);
sp_ctrlline_set_coords (SP_CTRLLINE (pc->cl1), dc->p[0].x, dc->p[0].y, dc->p[1].x, dc->p[1].y);
} else if (dc->npoints == 5) {
dc->p[4] = *p;
sp_canvas_item_show (pc->c0);
sp_canvas_item_show (pc->cl0);
if (((pc->mode == SP_PEN_CONTEXT_MODE_CLICK) && (state & GDK_CONTROL_MASK)) ||
((pc->mode == SP_PEN_CONTEXT_MODE_DRAG) && !(state & GDK_MOD1_MASK))) {
gdouble dx, dy;
dx = p->x - dc->p[3].x;
dy = p->y - dc->p[3].y;
dc->p[2].x = dc->p[3].x - dx;
dc->p[2].y = dc->p[3].y - dy;
sp_curve_reset (dc->red_curve);
sp_curve_moveto (dc->red_curve, dc->p[0].x, dc->p[0].y);
sp_curve_curveto (dc->red_curve, dc->p[1].x, dc->p[1].y, dc->p[2].x, dc->p[2].y, dc->p[3].x, dc->p[3].y);
sp_canvas_bpath_set_bpath (SP_CANVAS_BPATH (dc->red_bpath), dc->red_curve);
}
sp_ctrl_moveto (SP_CTRL (pc->c0), dc->p[2].x, dc->p[2].y);
sp_ctrlline_set_coords (SP_CTRLLINE (pc->cl0), dc->p[3].x, dc->p[3].y, dc->p[2].x, dc->p[2].y);
sp_ctrl_moveto (SP_CTRL (pc->c1), dc->p[4].x, dc->p[4].y);
sp_ctrlline_set_coords (SP_CTRLLINE (pc->cl1), dc->p[3].x, dc->p[3].y, dc->p[4].x, dc->p[4].y);
} else {
g_warning ("Something bad happened - npoints is %d", dc->npoints);
}
}
void
sp_ctrlline_set_coords (SPCtrlLine *cl, const Geom::Point start, const Geom::Point end)
{
sp_ctrlline_set_coords(cl, start[0], start[1], end[0], end[1]);
}