int
CIRCLE_WIDGET::stroke_cb(CGESTUREptr& g, DrawState*&)
{
err_adv(debug_all, "CIRCLE_WIDGET::stroke_cb()");
// Activity occurred to extend the deadline for fading away:
reset_timeout();
// sanity check
assert(g);
if( !g->is_line() )
return 1;
_preview.update_length();
if (PIXEL_list(_preview).dist(g->start()) < PIXEL_DIST_THRESH ||
g->start().dist(_center) < PIXEL_DIST_THRESH ) {
if ( _circle ) {
Bcurve *border = Bcurve::lookup(_circle->bfaces().get_boundary().edges());
if ( border != 0 ) {
Wplane plane = border->plane();
_radius = _center.dist(Wpt(plane, Wline(XYpt(g->end()))));
}
} else {
Wplane P = get_draw_plane(g->end());
if (!P.is_valid())
return 1;
_radius = _center.dist(Wpt(P, Wline(XYpt(g->end()))));
}
make_preview();
}
return 1;
}
int
CIRCLE_WIDGET::tap_cb(CGESTUREptr& g, DrawState*& s)
{
err_adv(debug_all, "CIRCLE_WIDGET::tap_cb()");
PIXEL pdummy;
int idummy;
if( _suggest_active ) {
_preview.update_length();
_literal_shape.update_length();
double preview_dist = PIXEL_list(_preview).closest( PIXEL(g->start()), pdummy, idummy );
double literal_dist = PIXEL_list(_literal_shape).closest( PIXEL(g->start()), pdummy, idummy );
if( preview_dist < literal_dist && preview_dist < PIXEL_DIST_THRESH ) {
_suggest_active = false;
make_preview();
return 1;
} else if( literal_dist < preview_dist && literal_dist < PIXEL_DIST_THRESH ) {
finish_literal();
return cancel_cb(g,s);
} else {
return cancel_cb(g,s);
}
}
if (_cmd)
WORLD::add_command(_cmd);
return cancel_cb(g,s);
}
int
SELECT_WIDGET::tap_cb(CGESTUREptr& g, DrawState*& s)
{
err_adv(debug, "SELECT_WIDGET::tap_cb()");
assert(g && g->is_tap());
if (_mode==SLASH_SEL)
{
//pattern editing
Bface* f = find_face(g->start(),0.25,MIN_PIX_AREA);
if (f) {
if (select_list.contains(f)||select_list.contains(f->quad_partner()))
{
//get whichever part of the quad is in the selection list
int temp = select_list.contains(f) ? select_list.get_index(f)+1 : select_list.get_index(f->quad_partner())+1 ;
if (temp>end_face) //user selected the end face
{
end_face=temp;
}
else //user is selecting a pattern
{
if (pattern<temp)
pattern=temp;
//select/deselect face
if (temp < MAX_PATTERN_SIZE)
pattern_array[temp]=!pattern_array[temp];
}
return 1;
}
else
cerr << "tap found a NULL face !" << endl;
}
return cancel_cb(g,s);
}
else
{
// Tap a selected face near the middle to deselect it:
if (try_deselect_face(g->center(), 0.25))
return 1;
// Tap edge to deselect
if (try_deselect_edge(g->center()))
return 1;
}
// Otherwise, turn off SELECT_WIDGET
return cancel_cb(g,s);
}
//! Given a set of enclosed face, activate the widget to sweep out a
//! shape. Checks for errors, returns true on success.
bool
SWEEP_DISK::setup(CGESTUREptr& gest, double dur)
{
static bool debug =
Config::get_var_bool("DEBUG_SWEEP_SETUP",false) || debug_all;
if (!(gest && gest->is_dslash())) {
err_adv(debug, "SWEEP_DISK::setup: bad gesture");
return false;
}
// XXX - shouldn't require it is a Panel:
Panel* p = dynamic_cast<Panel*>(Bsurface::hit_ctrl_surface(gest->start()));
if (!p) {
err_adv(debug, "SWEEP_DISK::setup: non-panel");
return false;
}
Bface_list faces = p->bfaces();
_boundary = faces.get_boundary();
if (_boundary.num_line_strips() != 1) {
err_adv(debug, "SWEEP_DISK::setup: error: boundary is not a single piece");
return false;
}
// Get the best-fit plane, rejecting if the boundary Wpt_list
// doesn't lie within 0.1 of its total length from the plane:
if (!_boundary.verts().pts().get_plane(_plane, 0.1)) {
err_adv(debug,"SWEEP_DISK::setup: Error: can't find plane");
return false;
}
// Find the center
Wpt o = _boundary.verts().pts().average();
// decide guideline direction (normal to plane):
Wvec n = _plane.normal();
if (VIEW::eye_vec(o) * n > 0)
n = -n;
// decide the length for the guideline:
double len = world_length(o, GUIDE_LEN);
// compute guideline endpoint:
Wpt b = o + n.normalized()*len;
// try basic setup
if (!SWEEP_BASE::setup(dynamic_pointer_cast<LMESH>(faces.mesh()), o, b, dur))
return false;
// ******** From here on we accept it ********
_enclosed_faces = faces;
return true;
}
int
INFLATE::stroke_cb(CGESTUREptr& gest, DrawState*& s)
{
err_adv(debug, "INFLATE::stroke_cb");
reset_timeout();
// Verify that we have a starting face
if ( _orig_face ) {
Bface* face = 0;
// Check that the stroke is straight enough to represent a line
if (!(gest->straightness() > 0.8)) {
err_adv(debug, "INFLATE::stroke_cb: gesture not straight");
return false;
}
// Check that the gesture starts on the mesh
Bsurface::hit_ctrl_surface(gest->start(), 1, &face);
if (!(face)) {
err_adv(debug, "INFLATE::stroke_cb: can't get hit face");
return false;
}
// create VEXELs for the gesture and the face normal
VEXEL fvec = VEXEL(face->v1()->loc(), face->norm());
VEXEL fgest = gest->endpt_vec();
// If gesture nearly parallel to normal:
double a = rad2deg(line_angle(fvec,fgest));
err_adv(debug, "INFLATE::stroke_cb: angle: %f %s",
a, (a > 15) ? "(bad)" : "(good)");
if (a > 15) {
// Fail if angle is too extreme
WORLD::message("Bad angle");
return 0;
}
// calculate extrude width
double dist = fgest.length()/fvec.length();
err_adv(debug, "INFLATE::stroke_cb: strong_edge_len: %f, gest_len: %f, \
fvect_len: %f", avg_strong_edge_len(face), fgest.length(), fvec.length() );
// Convert to relative to local edge length
dist /= avg_strong_edge_len(face);
if (fvec*fgest<0)
dist=-dist; // Get the sign right
// Store the new inflate distance
_preview_dist = dist;
}
return 1; // we used up the gesture...
}
int
INFLATE::tap_cb(CGESTUREptr& gest, DrawState*& state)
{
err_adv(debug, "INFLATE::tap_cb");
// Tracks if the tap was near a guideline
bool near_guidelines = false;
PIXEL pdummy;
int idummy;
if ( PIXEL_list(_lines).closest( PIXEL(gest->start()), pdummy, idummy ) < 5 )
near_guidelines = true;
// Check if gesture hits a BFace
Bface* face = 0;
Bsurface::hit_ctrl_surface(gest->start(), 1, &face);
// Fail if Gesture missed guidelines and geometry
if ( !face && !near_guidelines )
return cancel_cb(gest,state);
// Check that we are trying to inflate
if ( _orig_face ) {
// Find the reachable faces from the starting point
Bface_list set
= _mode ? _faces : Bface_list::reachable_faces(_orig_face);
// verify that the user tapped a face that is part of the inflation region
if ( face && !set.contains( face ) ) {
return cancel_cb(gest,state);
}
// Attempt to inflate the surface
INFLATE_CMDptr cmd = _mode ? (new INFLATE_CMD( _faces, _preview_dist )) :
(new INFLATE_CMD( _orig_face, _preview_dist ));
WORLD::add_command(cmd);
}
// On fail, cancel
return cancel_cb(gest,state);
}
int
INFLATE::line_cb(CGESTUREptr& gest, DrawState*& s)
{
// Activity occurred to extend the deadline for fading away:
reset_timeout();
err_adv(debug, "INFLATE::line_cb");
// Verify that we have a starting face
if ( _orig_face ) {
// Check that the stroke is straight enough to represent a line
Bface* face = 0;
if (!(gest->straightness() > 0.8)) {
err_adv(debug, "INFLATE::line_cb: gesture not straight");
return false;
}
// Check that the gesture starts on the mesh
Bsurface::hit_ctrl_surface(gest->start(), 1, &face);
if (!(face)) {
err_adv(debug, "INFLATE::line_cb: can't get hit face");
return false;
}
// create VEXELs for the gesture and the face normal
VEXEL fvec = VEXEL(face->v1()->loc(), face->norm());
VEXEL fgest = gest->endpt_vec();
// If gesture nearly parallel to normal:
double a = rad2deg(line_angle(fvec,fgest));
err_adv(debug, "INFLATE::line_cb: angle: %f %s",
a, (a > 15) ? "(bad)" : "(good)");
if (a > 15) {
return false;
}
// calculate extrude width
double dist = fgest.length()/fvec.length();
if (fvec*fgest<0)
dist=-dist; // Get the sign right
_preview_dist = dist;
}
// get here if nothing happened...
// don't cancel (which would deactivate the widget),
// just return 1 to indicate that we used up the gesture:
return 1;
}
int
SWEEP_BASE::line_cb(CGESTUREptr& g, DrawState*& s)
{
// Activity occurred to extend the deadline for fading away:
reset_timeout();
static bool debug =
Config::get_var_bool("DEBUG_SWEEP_LINE_CB",false) || debug_all;
err_adv(debug, "SWEEP_BASE::line_cb");
// If gesture aligns with guideline:
// if it starts near the end and extends past the end, extend
// if it starts near the beginning, do uniform sweep
// If it's across the gesture, trim
// If it's a trim stroke, it has to be short and run
// across the guideline.
const double TRIM_MAX_LEN = 65;
if (g->length() < TRIM_MAX_LEN) {
const double TRIM_ANGLE_THRESH = 80; // degrees
double angle = line_angle(g->endpt_vec(), pix_line().direction());
if (rad2deg(angle) > TRIM_ANGLE_THRESH) {
// Nice angle. But did it cross?
if (g->endpt_line().intersect_segs(pix_line()))
return trim_line_cb(g, s);
}
}
// do uniform sweep if straight gesture starts at sweep origin
// and ends near the guideline:
if (from_center(g)) {
if (hits_line(g->end()))
return do_uniform_sweep(project_to_guideline(g->end()) - sweep_origin());
return stroke_cb(g,s);
}
// extend the guideline if straight gesture starts near guideline end
// and is nearly parallel:
const double ALIGN_ANGLE_THRESH = 15; // degrees
if (pix_line().endpt().dist(g->start()) < DIST_THRESH_PIXELS &&
rad2deg(g->endpt_vec().angle(pix_line().direction())) < ALIGN_ANGLE_THRESH)
return extend_line_cb(g, s);
return stroke_cb(g,s);
}
//! Given an initial slash gesture (or delayed slash) on a
//! defined plane (FLOOR, Cursor3D, or existing Bpoint), set up
//! the widget to provide a guideline for drawing a straight line.
bool
SWEEP_POINT::setup(CGESTUREptr& slash, double dur)
{
static bool debug =
Config::get_var_bool("DEBUG_SWEEP_SETUP",false) || debug_all;
err_adv(debug, "SWEEP_POINT::setup");
// check the gesture
if (!(slash && slash->straightness() > 0.9)) {
err_adv(debug, "SWEEP_POINT::setup: gesture is bad");
return false;
}
// find the (straight) Bpoint near slash start
_point = Bpoint::hit_ctrl_point(slash->start());
return false;
// return SWEEP_BASE::setup(_curve->mesh(), o, endpt, dur);
}
bool
SWEEP_BASE::from_center(CGESTUREptr& g) const
{
assert(g != nullptr);
return g->start().dist(sweep_origin()) < DIST_THRESH_PIXELS;
}
//! Given an initial slash gesture (or delayed slash) near the
//! center of an existing straight Bcurve, set up the widget to
//! do a sweep cross-ways to the Bcurve:
bool
SWEEP_LINE::setup(CGESTUREptr& slash, double dur)
{
static bool debug =
Config::get_var_bool("DEBUG_SWEEP_SETUP",false) || debug_all;
err_adv(debug, "SWEEP_LINE::setup");
// check the gesture
if (!(slash && slash->straightness() > 0.99)) {
err_adv(debug, "SWEEP_LINE::setup: gesture is bad");
return false;
}
// find the (straight) Bcurve near slash start
_curve = Bcurve::hit_ctrl_curve(slash->start());
if (!(_curve && _curve->is_straight())) {
err_adv(debug, "SWEEP_LINE::setup: no straight curve at start");
return false;
}
// find endpoints
Bpoint *b1 = _curve->b1(), *b2 = _curve->b2();
assert(b1 && b2); // straight curve must have endpoints
// curve cannot be connected to other curves
if (b1->vert()->degree() != 1 || b2->vert()->degree() != 1) {
err_adv(debug, "SWEEP_LINE::setup: curve is not isolated");
return false;
}
// ensure the gesture starts near the center of the straight line Bcurve:
{
PIXEL a = b1->vert()->pix();
PIXEL b = b2->vert()->pix();
double t = (slash->start() - a).tlen(b-a);
if (t < 0.35 || t > 0.65) {
err_adv(debug, "SWEEP_LINE::setup: gesture not near center of line");
return false;
}
}
// find the plane to work in
_plane = check_plane(shared_plane(b1, b2));
if (!_plane.is_valid()) {
err_adv(debug, "SWEEP_LINE::setup: no valid plane");
return false;
}
// check that slash is perpendicular to line
Wpt a = b1->loc(); // endpoint at b1
Wpt b = b2->loc(); // endpoint at b2
Wvec t = b - a; // vector from endpt a to endpt b
Wpt o = a + t/2; // center of straight line curve
Wvec n = cross(_plane.normal(), t); // direction across line ab
Wvec slash_vec = endpt_vec(slash, _plane);
const double ALIGN_ANGLE_THRESH = 15;
double angle = rad2deg(slash_vec.angle(n));
if (angle > 90) {
angle = 180 - angle;
n = -n;
}
if (angle > ALIGN_ANGLE_THRESH) {
err_adv(debug, "SWEEP_LINE::setup: slash is not perpendicular to line");
err_adv(debug, " angle: %f", angle);
return false;
}
// compute guideline endpoint:
Wpt endpt = o + n.normalized()*a.dist(b);
return SWEEP_BASE::setup(_curve->mesh(), o, endpt, dur);
}
inline Wvec
endpt_vec(CGESTUREptr& g, CWplane& P)
{
return Wpt(P, Wline(g->end())) - Wpt(P, Wline(g->start()));
}
int
SELECT_WIDGET:: slash_cb(CGESTUREptr& gest, DrawState*& s)
{
if (_mode==SEL_FACE) //widget is in face selection mode
{
select_list.clear();
Bface* f = find_face(gest->start(),0.25,MIN_PIX_AREA);
// f should be the currently selected face
if (f && f->is_selected() && f->is_quad())
{
f=f->quad_rep();
//line in screen space coresponding to the slash
PIXELline slash(gest->start(),gest->end());
Bedge *e1,*e2,*e3,*e4;
Bedge* edge = 0;
//get and test the quad edges against the stroke line
f->get_quad_edges(e1,e2,e3,e4);
if( e1->pix_line().intersect_segs(slash) )
{
edge=e1;
}
else
if( e2->pix_line().intersect_segs(slash) )
{
edge=e2;
}
else
if( e3->pix_line().intersect_segs(slash) )
{
edge=e3;
}
else
if( e4->pix_line().intersect_segs(slash) )
{
edge=e4;
}
else
{
//error
cerr << "ERROR no intersection" << endl;
return 1;
}
//walk the geometry and select faces
Bface* fn = f;
do
{
if (!fn->is_selected())
select_list +=fn;
assert(edge); //I'm paranoid too
assert(edge->f1()!=edge->f2());
//grabs the face on the other side of the edge
//even if we are not directly adjacent to this edge
fn=fn->other_quad_face(edge);
if (fn) //if a valid face than advance the edge pointer
{
assert(edge!=fn->opposite_quad_edge(edge));
edge = fn->opposite_quad_edge(edge);
fn = fn->quad_rep(); //all faces on the selection list are rep faces
}
else
cerr << "No face on the other side of the edge" << endl;
} //quit if not a valid face or not a quad
while(fn&&(fn->is_quad())&&edge&&(fn!=f));
_mode=SLASH_SEL; //go into pattern editing mode
end_face=0; //prepare the 2nd step data
pattern=0;
for (int i=0; i<MAX_PATTERN_SIZE; i++)
pattern_array[i]=1; //fill the default pattern with ones
}
else
cerr << "This is not a quad" << endl;
}
else
if( _mode==SLASH_SEL)//pattern editing mode
{ //activates upon second slash motion
//adds the entire list to the selected group
//undo deselects the entire group
Bface_list final_list;
//copy the face pointers to the final list
//using the pattern as a repeating template
//and stop at the end face
for (int i = 0; i<(end_face ? (end_face) : select_list.num()) ; i++)
{
if (pattern ? pattern_array[(i%pattern)+1] : 1)
final_list+=select_list[i];
}
WORLD::add_command(new MESH_SELECT_CMD(final_list));
return cancel_cb(gest,s);
}
else
cerr << "wrong mode " << endl;
return 1;
}
