C++ GraphNode::get_connection_input_position方法代码示例

bool GraphEdit::_filter_input(const Point2 &p_point) {

	Ref<Texture> port = get_icon("port", "GraphNode");

	for (int i = get_child_count() - 1; i >= 0; i--) {

		GraphNode *gn = Object::cast_to<GraphNode>(get_child(i));
		if (!gn)
			continue;

		for (int j = 0; j < gn->get_connection_output_count(); j++) {

			Vector2 pos = gn->get_connection_output_position(j) + gn->get_position();
			if (is_in_hot_zone(pos, p_point))
				return true;
		}

		for (int j = 0; j < gn->get_connection_input_count(); j++) {

			Vector2 pos = gn->get_connection_input_position(j) + gn->get_position();
			if (is_in_hot_zone(pos, p_point)) {
				return true;
			}
		}
	}

	return false;
}

void GraphEdit::_connections_layer_draw() {

	Color activity_color = get_color("activity");
	//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 = Object::cast_to<GraphNode>(from);

		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 = Object::cast_to<GraphNode>(to);

		if (!gto) {
			to_erase.push_back(E);
			continue;
		}

		Vector2 frompos = gfrom->get_connection_output_position(E->get().from_port) + gfrom->get_offset() * zoom;
		Color color = gfrom->get_connection_output_color(E->get().from_port);
		Vector2 topos = gto->get_connection_input_position(E->get().to_port) + gto->get_offset() * zoom;
		Color tocolor = gto->get_connection_input_color(E->get().to_port);

		if (E->get().activity > 0) {
			color = color.linear_interpolate(activity_color, E->get().activity);
			tocolor = tocolor.linear_interpolate(activity_color, E->get().activity);
		}
		_draw_cos_line(connections_layer, frompos, topos, color, tocolor);
	}

	while (to_erase.size()) {
		connections.erase(to_erase.front()->get());
		to_erase.pop_front();
	}
}

void GraphEdit::_top_layer_draw() {

	_update_scroll();

	if (connecting) {

		Node *fromn = get_node(connecting_from);
		ERR_FAIL_COND(!fromn);
		GraphNode *from = Object::cast_to<GraphNode>(fromn);
		ERR_FAIL_COND(!from);
		Vector2 pos;
		if (connecting_out)
			pos = from->get_connection_output_position(connecting_index);
		else
			pos = from->get_connection_input_position(connecting_index);
		pos += from->get_position();

		Vector2 topos;
		topos = connecting_to;

		Color col = connecting_color;

		if (connecting_target) {
			col.r += 0.4;
			col.g += 0.4;
			col.b += 0.4;
		}

		if (!connecting_out) {
			SWAP(pos, topos);
		}
		_draw_cos_line(top_layer, pos, topos, col, col);
	}

	if (box_selecting)
		top_layer->draw_rect(box_selecting_rect, Color(0.7, 0.7, 1.0, 0.3));
}

void GraphEdit::_top_layer_input(const Ref<InputEvent> &p_ev) {

	Ref<InputEventMouseButton> mb = p_ev;
	if (mb.is_valid() && mb->get_button_index() == BUTTON_LEFT && mb->is_pressed()) {

		Ref<Texture> port = get_icon("port", "GraphNode");
		Vector2 mpos(mb->get_position().x, mb->get_position().y);
		for (int i = get_child_count() - 1; i >= 0; i--) {

			GraphNode *gn = Object::cast_to<GraphNode>(get_child(i));
			if (!gn)
				continue;

			for (int j = 0; j < gn->get_connection_output_count(); j++) {

				Vector2 pos = gn->get_connection_output_position(j) + gn->get_position();
				if (is_in_hot_zone(pos, mpos)) {

					if (valid_left_disconnect_types.has(gn->get_connection_output_type(j))) {
						//check disconnect
						for (List<Connection>::Element *E = connections.front(); E; E = E->next()) {

							if (E->get().from == gn->get_name() && E->get().from_port == j) {

								Node *to = get_node(String(E->get().to));
								if (Object::cast_to<GraphNode>(to)) {

									connecting_from = E->get().to;
									connecting_index = E->get().to_port;
									connecting_out = false;
									connecting_type = Object::cast_to<GraphNode>(to)->get_connection_input_type(E->get().to_port);
									connecting_color = Object::cast_to<GraphNode>(to)->get_connection_input_color(E->get().to_port);
									connecting_target = false;
									connecting_to = pos;
									just_disconnected = true;

									emit_signal("disconnection_request", E->get().from, E->get().from_port, E->get().to, E->get().to_port);
									to = get_node(String(connecting_from)); //maybe it was erased
									if (Object::cast_to<GraphNode>(to)) {
										connecting = true;
									}
									return;
								}
							}
						}
					}

					connecting = true;
					connecting_from = gn->get_name();
					connecting_index = j;
					connecting_out = true;
					connecting_type = gn->get_connection_output_type(j);
					connecting_color = gn->get_connection_output_color(j);
					connecting_target = false;
					connecting_to = pos;
					just_disconnected = false;
					return;
				}
			}

			for (int j = 0; j < gn->get_connection_input_count(); j++) {

				Vector2 pos = gn->get_connection_input_position(j) + gn->get_position();
				if (is_in_hot_zone(pos, mpos)) {

					if (right_disconnects || valid_right_disconnect_types.has(gn->get_connection_input_type(j))) {
						//check disconnect
						for (List<Connection>::Element *E = connections.front(); E; E = E->next()) {

							if (E->get().to == gn->get_name() && E->get().to_port == j) {

								Node *fr = get_node(String(E->get().from));
								if (Object::cast_to<GraphNode>(fr)) {

									connecting_from = E->get().from;
									connecting_index = E->get().from_port;
									connecting_out = true;
									connecting_type = Object::cast_to<GraphNode>(fr)->get_connection_output_type(E->get().from_port);
									connecting_color = Object::cast_to<GraphNode>(fr)->get_connection_output_color(E->get().from_port);
									connecting_target = false;
									connecting_to = pos;
									just_disconnected = true;

									emit_signal("disconnection_request", E->get().from, E->get().from_port, E->get().to, E->get().to_port);
									fr = get_node(String(connecting_from)); //maybe it was erased
									if (Object::cast_to<GraphNode>(fr)) {
										connecting = true;
									}
									return;
								}
							}
						}
					}

					connecting = true;
					connecting_from = gn->get_name();
					connecting_index = j;
					connecting_out = false;
					connecting_type = gn->get_connection_input_type(j);
					connecting_color = gn->get_connection_input_color(j);
//.........这里部分代码省略.........