prettier connections for graph edit

This commit is contained in:
Juan Linietsky 2016-08-23 10:15:47 -03:00
parent cbbcf72703
commit 231c72b5eb
6 changed files with 139 additions and 54 deletions

View file

@ -61,6 +61,7 @@ Error GraphEdit::connect_node(const StringName& p_from, int p_from_port,const St
c.to_port=p_to_port;
connections.push_back(c);
top_layer->update();
update();
return OK;
}
@ -85,6 +86,7 @@ void GraphEdit::disconnect_node(const StringName& p_from, int p_from_port,const
connections.erase(E);
top_layer->update();
update();
return;
}
}
@ -118,10 +120,7 @@ void GraphEdit::_scroll_moved(double) {
_update_scroll_offset();
top_layer->update();
if (is_using_snap()) {
//must redraw grid
update();
}
update();
if (!setting_scroll_ofs) {//in godot, signals on change value are avoided as a convention
emit_signal("scroll_offset_changed",get_scroll_ofs());
@ -205,6 +204,7 @@ void GraphEdit::_graph_node_moved(Node *p_gn) {
GraphNode *gn=p_gn->cast_to<GraphNode>();
ERR_FAIL_COND(!gn);
top_layer->update();
update();
}
void GraphEdit::add_child_notify(Node *p_child) {
@ -306,11 +306,60 @@ void GraphEdit::_notification(int p_what) {
}
{
//draw connections
List<List<Connection>::Element* > to_erase;
for(List<Connection>::Element *E=connections.front();E;E=E->next()) {
NodePath fromnp(E->get().from);
Node * from = get_node(fromnp);
if (!from) {
to_erase.push_back(E);
continue;
}
GraphNode *gfrom = from->cast_to<GraphNode>();
if (!gfrom) {
to_erase.push_back(E);
continue;
}
NodePath tonp(E->get().to);
Node * to = get_node(tonp);
if (!to) {
to_erase.push_back(E);
continue;
}
GraphNode *gto = to->cast_to<GraphNode>();
if (!gto) {
to_erase.push_back(E);
continue;
}
Vector2 frompos=gfrom->get_connection_output_pos(E->get().from_port)+gfrom->get_pos();
Color color = gfrom->get_connection_output_color(E->get().from_port);
Vector2 topos=gto->get_connection_input_pos(E->get().to_port)+gto->get_pos();
Color tocolor = gto->get_connection_input_color(E->get().to_port);
_draw_cos_line(this,frompos,topos,color,tocolor);
}
while(to_erase.size()) {
connections.erase(to_erase.front()->get());
to_erase.pop_front();
}
}
}
if (p_what==NOTIFICATION_RESIZED) {
_update_scroll();
top_layer->update();
}
}
@ -466,7 +515,7 @@ void GraphEdit::_top_layer_input(const InputEvent& p_ev) {
connecting_to=Vector2(p_ev.mouse_motion.x,p_ev.mouse_motion.y);
connecting_target=false;
top_layer->update();
top_layer->update();
Ref<Texture> port =get_icon("port","GraphNode");
Vector2 mpos(p_ev.mouse_button.x,p_ev.mouse_button.y);
@ -529,15 +578,82 @@ void GraphEdit::_top_layer_input(const InputEvent& p_ev) {
}
connecting=false;
top_layer->update();
update();
}
}
void GraphEdit::_draw_cos_line(const Vector2& p_from, const Vector2& p_to,const Color& p_color,const Color& p_to_color) {
template<class Vector2>
static _FORCE_INLINE_ Vector2 _bezier_interp(real_t t, Vector2 start, Vector2 control_1, Vector2 control_2, Vector2 end) {
/* Formula from Wikipedia article on Bezier curves. */
real_t omt = (1.0 - t);
real_t omt2 = omt*omt;
real_t omt3 = omt2*omt;
real_t t2 = t*t;
real_t t3 = t2*t;
return start * omt3
+ control_1 * omt2 * t * 3.0
+ control_2 * omt * t2 * 3.0
+ end * t3;
}
void GraphEdit::_bake_segment2d(CanvasItem* p_where,float p_begin, float p_end,const Vector2& p_a,const Vector2& p_out,const Vector2& p_b, const Vector2& p_in,int p_depth,int p_min_depth,int p_max_depth,float p_tol,const Color& p_color,const Color& p_to_color,int &lines) const {
float mp = p_begin+(p_end-p_begin)*0.5;
Vector2 beg = _bezier_interp(p_begin,p_a,p_a+p_out,p_b+p_in,p_b);
Vector2 mid = _bezier_interp(mp,p_a,p_a+p_out,p_b+p_in,p_b);
Vector2 end = _bezier_interp(p_end,p_a,p_a+p_out,p_b+p_in,p_b);
Vector2 na = (mid-beg).normalized();
Vector2 nb = (end-mid).normalized();
float dp = Math::rad2deg(Math::acos(na.dot(nb)));
if (p_depth>=p_min_depth && ( dp<p_tol || p_depth>=p_max_depth)) {
p_where->draw_line(beg,end,p_color.linear_interpolate(p_to_color,mp),2);
lines++;
} else {
_bake_segment2d(p_where,p_begin,mp,p_a,p_out,p_b,p_in,p_depth+1,p_min_depth,p_max_depth,p_tol,p_color,p_to_color,lines);
_bake_segment2d(p_where,mp,p_end,p_a,p_out,p_b,p_in,p_depth+1,p_min_depth,p_max_depth,p_tol,p_color,p_to_color,lines);
}
}
void GraphEdit::_draw_cos_line(CanvasItem* p_where,const Vector2& p_from, const Vector2& p_to,const Color& p_color,const Color& p_to_color) {
#if 1
//cubic bezier code
float diff = p_to.x-p_from.x;
float cp_offset;
int cp_len = get_constant("bezier_len_pos");
int cp_neg_len = get_constant("bezier_len_neg");
if (diff>0) {
cp_offset=MAX(cp_len,diff*0.5);
} else {
cp_offset=MAX(MIN(cp_len-diff,cp_neg_len),-diff*0.5);
}
Vector2 c1 = Vector2(cp_offset,0);
Vector2 c2 = Vector2(-cp_offset,0);
int lines=0;
_bake_segment2d(p_where,0,1,p_from,c1,p_to,c2,0,5,12,8,p_color,p_to_color,lines);
//print_line("used lines: "+itos(lines));
#else
static const int steps = 20;
//old cosine code
Rect2 r;
r.pos=p_from;
r.expand_to(p_to);
@ -547,6 +663,7 @@ void GraphEdit::_draw_cos_line(const Vector2& p_from, const Vector2& p_to,const
Vector2 prev;
for(int i=0;i<=steps;i++) {
float d = i/float(steps);
float c=-Math::cos(d*Math_PI) * 0.5+0.5;
if (flip)
@ -555,11 +672,12 @@ void GraphEdit::_draw_cos_line(const Vector2& p_from, const Vector2& p_to,const
if (i>0) {
top_layer->draw_line(prev,p,p_color.linear_interpolate(p_to_color,d),2);
p_where->draw_line(prev,p,p_color.linear_interpolate(p_to_color,d),2);
}
prev=p;
}
#endif
}
void GraphEdit::_top_layer_draw() {
@ -589,53 +707,10 @@ void GraphEdit::_top_layer_draw() {
col.g+=0.4;
col.b+=0.4;
}
_draw_cos_line(pos,topos,col,col);
_draw_cos_line(top_layer,pos,topos,col,col);
}
List<List<Connection>::Element* > to_erase;
for(List<Connection>::Element *E=connections.front();E;E=E->next()) {
NodePath fromnp(E->get().from);
Node * from = get_node(fromnp);
if (!from) {
to_erase.push_back(E);
continue;
}
GraphNode *gfrom = from->cast_to<GraphNode>();
if (!gfrom) {
to_erase.push_back(E);
continue;
}
NodePath tonp(E->get().to);
Node * to = get_node(tonp);
if (!to) {
to_erase.push_back(E);
continue;
}
GraphNode *gto = to->cast_to<GraphNode>();
if (!gto) {
to_erase.push_back(E);
continue;
}
Vector2 frompos=gfrom->get_connection_output_pos(E->get().from_port)+gfrom->get_pos();
Color color = gfrom->get_connection_output_color(E->get().from_port);
Vector2 topos=gto->get_connection_input_pos(E->get().to_port)+gto->get_pos();
Color tocolor = gto->get_connection_input_color(E->get().to_port);
_draw_cos_line(frompos,topos,color,tocolor);
}
while(to_erase.size()) {
connections.erase(to_erase.front()->get());
to_erase.pop_front();
}
if (box_selecting)
top_layer->draw_rect(box_selecting_rect,Color(0.7,0.7,1.0,0.3));
}
@ -765,6 +840,7 @@ void GraphEdit::_input_event(const InputEvent& p_ev) {
dragging = false;
top_layer->update();
update();
}
if (b.button_index==BUTTON_LEFT && b.pressed) {
@ -1173,4 +1249,6 @@ GraphEdit::GraphEdit() {
setting_scroll_ofs=false;
}

View file

@ -112,7 +112,9 @@ private:
bool updating;
List<Connection> connections;
void _draw_cos_line(const Vector2& p_from, const Vector2& p_to, const Color& p_color, const Color &p_to_color);
void _bake_segment2d(CanvasItem* p_where,float p_begin, float p_end, const Vector2& p_a, const Vector2& p_out, const Vector2& p_b, const Vector2& p_in, int p_depth, int p_min_depth, int p_max_depth, float p_tol, const Color& p_color, const Color& p_to_color, int &lines) const;
void _draw_cos_line(CanvasItem* p_where,const Vector2& p_from, const Vector2& p_to, const Color& p_color, const Color &p_to_color);
void _graph_node_raised(Node* p_gn);
void _graph_node_moved(Node *p_gn);
@ -128,6 +130,9 @@ private:
Array _get_connection_list() const;
bool lines_on_bg;
struct ConnType {
union {

View file

@ -930,6 +930,8 @@ void fill_default_theme(Ref<Theme>& t,const Ref<Font> & default_font,const Ref<F
t->set_stylebox("bg","GraphEdit", make_stylebox( tree_bg_png,4,4,4,5) );
t->set_color("grid_minor","GraphEdit", Color(1,1,1,0.05) );
t->set_color("grid_major","GraphEdit", Color(1,1,1,0.2) );
t->set_constant("bezier_len_pos","GraphEdit", 80*scale );
t->set_constant("bezier_len_neg","GraphEdit", 160*scale );

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@ -100,7 +100,7 @@ static const unsigned char full_panel_bg_png[]={
static const unsigned char graph_node_png[]={
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};
@ -130,7 +130,7 @@ static const unsigned char graph_node_position_png[]={
static const unsigned char graph_node_selected_png[]={
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