C++ Transform2D::affine_inverse方法代码示例

bool CollisionSolver2DSW::solve_raycast(const Shape2DSW *p_shape_A, const Transform2D &p_transform_A, const Shape2DSW *p_shape_B, const Transform2D &p_transform_B, CallbackResult p_result_callback, void *p_userdata, bool p_swap_result, Vector2 *sep_axis) {

	const RayShape2DSW *ray = static_cast<const RayShape2DSW *>(p_shape_A);
	if (p_shape_B->get_type() == Physics2DServer::SHAPE_RAY)
		return false;

	Vector2 from = p_transform_A.get_origin();
	Vector2 to = from + p_transform_A[1] * ray->get_length();
	Vector2 support_A = to;

	Transform2D invb = p_transform_B.affine_inverse();
	from = invb.xform(from);
	to = invb.xform(to);

	Vector2 p, n;
	if (!p_shape_B->intersect_segment(from, to, p, n)) {

		if (sep_axis)
			*sep_axis = p_transform_A[1].normalized();
		return false;
	}

	Vector2 support_B = p_transform_B.xform(p);

	if (p_result_callback) {
		if (p_swap_result)
			p_result_callback(support_B, support_A, p_userdata);
		else
			p_result_callback(support_A, support_B, p_userdata);
	}
	return true;
}

void Area2DSW::set_transform(const Transform2D &p_transform) {

	if (!moved_list.in_list() && get_space())
		get_space()->area_add_to_moved_list(&moved_list);

	_set_transform(p_transform);
	_set_inv_transform(p_transform.affine_inverse());
}

void CollisionObject2DSW::set_shape_transform(int p_index, const Transform2D &p_transform) {

	ERR_FAIL_INDEX(p_index, shapes.size());

	shapes[p_index].xform = p_transform;
	shapes[p_index].xform_inv = p_transform.affine_inverse();
	_update_shapes();
	_shapes_changed();
}

bool BodyPair2DSW::_test_ccd(real_t p_step, Body2DSW *p_A, int p_shape_A, const Transform2D &p_xform_A, Body2DSW *p_B, int p_shape_B, const Transform2D &p_xform_B, bool p_swap_result) {

	Vector2 motion = p_A->get_linear_velocity() * p_step;
	real_t mlen = motion.length();
	if (mlen < CMP_EPSILON)
		return false;

	Vector2 mnormal = motion / mlen;

	real_t min, max;
	p_A->get_shape(p_shape_A)->project_rangev(mnormal, p_xform_A, min, max);
	bool fast_object = mlen > (max - min) * 0.3; //going too fast in that direction

	if (!fast_object) { //did it move enough in this direction to even attempt raycast? let's say it should move more than 1/3 the size of the object in that axis
		return false;
	}

	//cast a segment from support in motion normal, in the same direction of motion by motion length
	//support is the worst case collision point, so real collision happened before
	int a;
	Vector2 s[2];
	p_A->get_shape(p_shape_A)->get_supports(p_xform_A.basis_xform(mnormal).normalized(), s, a);
	Vector2 from = p_xform_A.xform(s[0]);
	Vector2 to = from + motion;

	Transform2D from_inv = p_xform_B.affine_inverse();

	Vector2 local_from = from_inv.xform(from - mnormal * mlen * 0.1); //start from a little inside the bounding box
	Vector2 local_to = from_inv.xform(to);

	Vector2 rpos, rnorm;
	if (!p_B->get_shape(p_shape_B)->intersect_segment(local_from, local_to, rpos, rnorm))
		return false;

	//ray hit something

	Vector2 hitpos = p_xform_B.xform(rpos);

	Vector2 contact_A = to;
	Vector2 contact_B = hitpos;

	//create a contact

	if (p_swap_result)
		_contact_added_callback(contact_B, contact_A);
	else
		_contact_added_callback(contact_A, contact_B);

	return true;
}

void ViewportContainer::_input(const Ref<InputEvent> &p_event) {

	if (Engine::get_singleton()->is_editor_hint())
		return;

	Transform2D xform = get_global_transform();

	if (stretch) {
		Transform2D scale_xf;
		scale_xf.scale(Vector2(shrink, shrink));
		xform *= scale_xf;
	}

	Ref<InputEvent> ev = p_event->xformed_by(xform.affine_inverse());

	for (int i = 0; i < get_child_count(); i++) {

		Viewport *c = Object::cast_to<Viewport>(get_child(i));
		if (!c || c->is_input_disabled())
			continue;

		c->input(ev);
	}
}

bool NavigationPolygonEditor::forward_gui_input(const Ref<InputEvent> &p_event) {

	if (!node)
		return false;

	if (node->get_navigation_polygon().is_null()) {

		Ref<InputEventMouseButton> mb = p_event;

		if (mb.is_valid() && mb->get_button_index() == 1 && mb->is_pressed()) {
			create_nav->set_text("No NavigationPolygon resource on this node.\nCreate and assign one?");
			create_nav->popup_centered_minsize();
		}
		return (mb.is_valid() && mb->get_button_index() == 1);
	}

	Ref<InputEventMouseButton> mb = p_event;

	if (mb.is_valid()) {

		Transform2D xform = canvas_item_editor->get_canvas_transform() * node->get_global_transform();

		Vector2 gpoint = mb->get_position();
		Vector2 cpoint = canvas_item_editor->get_canvas_transform().affine_inverse().xform(gpoint);
		cpoint = canvas_item_editor->snap_point(cpoint);
		cpoint = node->get_global_transform().affine_inverse().xform(cpoint);

		//first check if a point is to be added (segment split)
		real_t grab_threshold = EDITOR_DEF("editors/poly_editor/point_grab_radius", 8);

		switch (mode) {

			case MODE_CREATE: {

				if (mb->get_button_index() == BUTTON_LEFT && mb->is_pressed()) {

					if (!wip_active) {

						wip.clear();
						wip.push_back(cpoint);
						wip_active = true;
						edited_point_pos = cpoint;
						edited_outline = -1;
						canvas_item_editor->get_viewport_control()->update();
						edited_point = 1;
						return true;
					} else {

						if (wip.size() > 1 && xform.xform(wip[0]).distance_to(gpoint) < grab_threshold) {
							//wip closed
							_wip_close();

							return true;
						} else {

							wip.push_back(cpoint);
							edited_point = wip.size();
							canvas_item_editor->get_viewport_control()->update();
							return true;

							//add wip point
						}
					}
				} else if (mb->get_button_index() == BUTTON_RIGHT && mb->is_pressed() && wip_active) {
					_wip_close();
				}

			} break;

			case MODE_EDIT: {

				if (mb->get_button_index() == BUTTON_LEFT) {
					if (mb->is_pressed()) {

						if (mb->get_control()) {

							//search edges
							int closest_outline = -1;
							int closest_idx = -1;
							Vector2 closest_pos;
							real_t closest_dist = 1e10;

							for (int j = 0; j < node->get_navigation_polygon()->get_outline_count(); j++) {

								PoolVector<Vector2> points = node->get_navigation_polygon()->get_outline(j);

								int pc = points.size();
								PoolVector<Vector2>::Read poly = points.read();

								for (int i = 0; i < pc; i++) {

									Vector2 points[2] = { xform.xform(poly[i]),
										xform.xform(poly[(i + 1) % pc]) };

									Vector2 cp = Geometry::get_closest_point_to_segment_2d(gpoint, points);
									if (cp.distance_squared_to(points[0]) < CMP_EPSILON2 || cp.distance_squared_to(points[1]) < CMP_EPSILON2)
										continue; //not valid to reuse point

									real_t d = cp.distance_to(gpoint);
									if (d < closest_dist && d < grab_threshold) {
//.........这里部分代码省略.........

bool CollisionPolygon2DEditor::forward_gui_input(const Ref<InputEvent> &p_event) {

	if (!node)
		return false;

	Ref<InputEventMouseButton> mb;

	if (mb.is_valid()) {
		Transform2D xform = canvas_item_editor->get_canvas_transform() * node->get_global_transform();

		Vector2 gpoint = mb->get_position();
		Vector2 cpoint = canvas_item_editor->get_canvas_transform().affine_inverse().xform(gpoint);
		cpoint = canvas_item_editor->snap_point(cpoint);
		cpoint = node->get_global_transform().affine_inverse().xform(cpoint);

		Vector<Vector2> poly = node->get_polygon();

		//first check if a point is to be added (segment split)
		real_t grab_treshold = EDITOR_DEF("editors/poly_editor/point_grab_radius", 8);

		switch (mode) {

			case MODE_CREATE: {

				if (mb->get_button_index() == BUTTON_LEFT && mb->is_pressed()) {

					if (!wip_active) {

						wip.clear();
						wip.push_back(cpoint);
						wip_active = true;
						edited_point_pos = cpoint;
						canvas_item_editor->get_viewport_control()->update();
						edited_point = 1;
						return true;
					} else {

						if (wip.size() > 1 && xform.xform(wip[0]).distance_to(gpoint) < grab_treshold) {
							//wip closed
							_wip_close();

							return true;
						} else {

							wip.push_back(cpoint);
							edited_point = wip.size();
							canvas_item_editor->get_viewport_control()->update();
							return true;

							//add wip point
						}
					}
				} else if (mb->get_button_index() == BUTTON_RIGHT && mb->is_pressed() && wip_active) {
					_wip_close();
				}

			} break;

			case MODE_EDIT: {

				if (mb->get_button_index() == BUTTON_LEFT) {
					if (mb->is_pressed()) {

						if (mb->get_control()) {

							if (poly.size() < 3) {

								undo_redo->create_action(TTR("Edit Poly"));
								undo_redo->add_undo_method(node, "set_polygon", poly);
								poly.push_back(cpoint);
								undo_redo->add_do_method(node, "set_polygon", poly);
								undo_redo->add_do_method(canvas_item_editor->get_viewport_control(), "update");
								undo_redo->add_undo_method(canvas_item_editor->get_viewport_control(), "update");
								undo_redo->commit_action();
								return true;
							}

							//search edges
							int closest_idx = -1;
							Vector2 closest_pos;
							real_t closest_dist = 1e10;
							for (int i = 0; i < poly.size(); i++) {

								Vector2 points[2] = { xform.xform(poly[i]),
									xform.xform(poly[(i + 1) % poly.size()]) };

								Vector2 cp = Geometry::get_closest_point_to_segment_2d(gpoint, points);
								if (cp.distance_squared_to(points[0]) < CMP_EPSILON2 || cp.distance_squared_to(points[1]) < CMP_EPSILON2)
									continue; //not valid to reuse point

								real_t d = cp.distance_to(gpoint);
								if (d < closest_dist && d < grab_treshold) {
									closest_dist = d;
									closest_pos = cp;
									closest_idx = i;
								}
							}

							if (closest_idx >= 0) {

//.........这里部分代码省略.........

bool Path2DEditor::forward_gui_input(const Ref<InputEvent> &p_event) {
	if (!node)
		return false;

	if (!node->is_visible_in_tree())
		return false;

	if (!node->get_curve().is_valid())
		return false;

	Ref<InputEventMouseButton> mb = p_event;

	if (mb.is_valid()) {

		Transform2D xform = canvas_item_editor->get_canvas_transform() * node->get_global_transform();

		Vector2 gpoint = mb->get_position();
		Vector2 cpoint = node->get_global_transform().affine_inverse().xform(canvas_item_editor->snap_point(canvas_item_editor->get_canvas_transform().affine_inverse().xform(mb->get_position())));

		real_t grab_threshold = EDITOR_DEF("editors/poly_editor/point_grab_radius", 8);

		if (mb->is_pressed() && action == ACTION_NONE) {

			Ref<Curve2D> curve = node->get_curve();

			for (int i = 0; i < curve->get_point_count(); i++) {

				real_t dist_to_p = gpoint.distance_to(xform.xform(curve->get_point_position(i)));
				real_t dist_to_p_out = gpoint.distance_to(xform.xform(curve->get_point_position(i) + curve->get_point_out(i)));
				real_t dist_to_p_in = gpoint.distance_to(xform.xform(curve->get_point_position(i) + curve->get_point_in(i)));

				// Check for point movement start (for point + in/out controls).
				if (mb->get_button_index() == BUTTON_LEFT) {
					if (mode == MODE_EDIT && !mb->get_shift() && dist_to_p < grab_threshold) {
						// Points can only be moved in edit mode.

						action = ACTION_MOVING_POINT;
						action_point = i;
						moving_from = curve->get_point_position(i);
						moving_screen_from = gpoint;
						return true;
					} else if (mode == MODE_EDIT || mode == MODE_EDIT_CURVE) {
						// In/out controls can be moved in multiple modes.
						if (dist_to_p_out < grab_threshold && i < (curve->get_point_count() - 1)) {

							action = ACTION_MOVING_OUT;
							action_point = i;
							moving_from = curve->get_point_out(i);
							moving_screen_from = gpoint;
							return true;
						} else if (dist_to_p_in < grab_threshold && i > 0) {

							action = ACTION_MOVING_IN;
							action_point = i;
							moving_from = curve->get_point_in(i);
							moving_screen_from = gpoint;
							return true;
						}
					}
				}

				// Check for point deletion.
				if ((mb->get_button_index() == BUTTON_RIGHT && mode == MODE_EDIT) || (mb->get_button_index() == BUTTON_LEFT && mode == MODE_DELETE)) {
					if (dist_to_p < grab_threshold) {

						undo_redo->create_action(TTR("Remove Point from Curve"));
						undo_redo->add_do_method(curve.ptr(), "remove_point", i);
						undo_redo->add_undo_method(curve.ptr(), "add_point", curve->get_point_position(i), curve->get_point_in(i), curve->get_point_out(i), i);
						undo_redo->add_do_method(canvas_item_editor->get_viewport_control(), "update");
						undo_redo->add_undo_method(canvas_item_editor->get_viewport_control(), "update");
						undo_redo->commit_action();
						return true;
					} else if (dist_to_p_out < grab_threshold) {

						undo_redo->create_action(TTR("Remove Out-Control from Curve"));
						undo_redo->add_do_method(curve.ptr(), "set_point_out", i, Vector2());
						undo_redo->add_undo_method(curve.ptr(), "set_point_out", i, curve->get_point_out(i));
						undo_redo->add_do_method(canvas_item_editor->get_viewport_control(), "update");
						undo_redo->add_undo_method(canvas_item_editor->get_viewport_control(), "update");
						undo_redo->commit_action();
						return true;
					} else if (dist_to_p_in < grab_threshold) {

						undo_redo->create_action(TTR("Remove In-Control from Curve"));
						undo_redo->add_do_method(curve.ptr(), "set_point_in", i, Vector2());
						undo_redo->add_undo_method(curve.ptr(), "set_point_in", i, curve->get_point_in(i));
						undo_redo->add_do_method(canvas_item_editor->get_viewport_control(), "update");
						undo_redo->add_undo_method(canvas_item_editor->get_viewport_control(), "update");
						undo_redo->commit_action();
						return true;
					}
				}
			}
		}

		// Check for point creation.
		if (mb->is_pressed() && mb->get_button_index() == BUTTON_LEFT && ((mb->get_command() && mode == MODE_EDIT) || mode == MODE_CREATE)) {

			Ref<Curve2D> curve = node->get_curve();

//.........这里部分代码省略.........

void TextureRegionEditor::_region_draw() {
	Ref<Texture> base_tex = NULL;
	if (node_sprite)
		base_tex = node_sprite->get_texture();
	else if (node_patch9)
		base_tex = node_patch9->get_texture();
	else if (obj_styleBox.is_valid())
		base_tex = obj_styleBox->get_texture();
	else if (atlas_tex.is_valid())
		base_tex = atlas_tex->get_atlas();
	if (base_tex.is_null())
		return;

	Transform2D mtx;
	mtx.elements[2] = -draw_ofs;
	mtx.scale_basis(Vector2(draw_zoom, draw_zoom));

	VS::get_singleton()->canvas_item_add_set_transform(edit_draw->get_canvas_item(), mtx);
	edit_draw->draw_texture(base_tex, Point2());
	VS::get_singleton()->canvas_item_add_set_transform(edit_draw->get_canvas_item(), Transform2D());

	if (snap_mode == SNAP_GRID) {
		Size2 s = edit_draw->get_size();
		int last_cell;

		if (snap_step.x != 0) {
			if (snap_separation.x == 0)
				for (int i = 0; i < s.width; i++) {
					int cell = Math::fast_ftoi(Math::floor((mtx.affine_inverse().xform(Vector2(i, 0)).x - snap_offset.x) / snap_step.x));
					if (i == 0)
						last_cell = cell;
					if (last_cell != cell)
						edit_draw->draw_line(Point2(i, 0), Point2(i, s.height), Color(0.3, 0.7, 1, 0.3));
					last_cell = cell;
				}
			else
				for (int i = 0; i < s.width; i++) {
					int cell = Math::fast_ftoi(Math::floor((mtx.affine_inverse().xform(Vector2(i, 0)).x - snap_offset.x) / (snap_step.x + snap_separation.x)));
					if (i == 0)
						last_cell = cell;
					if (last_cell != cell)
						edit_draw->draw_rect(Rect2(i - snap_separation.x * draw_zoom, 0, snap_separation.x * draw_zoom, s.height), Color(0.3, 0.7, 1, 0.3));
					last_cell = cell;
				}
		}

		if (snap_step.y != 0) {
			if (snap_separation.y == 0)
				for (int i = 0; i < s.height; i++) {
					int cell = Math::fast_ftoi(Math::floor((mtx.affine_inverse().xform(Vector2(0, i)).y - snap_offset.y) / snap_step.y));
					if (i == 0)
						last_cell = cell;
					if (last_cell != cell)
						edit_draw->draw_line(Point2(0, i), Point2(s.width, i), Color(0.3, 0.7, 1, 0.3));
					last_cell = cell;
				}
			else
				for (int i = 0; i < s.height; i++) {
					int cell = Math::fast_ftoi(Math::floor((mtx.affine_inverse().xform(Vector2(0, i)).y - snap_offset.y) / (snap_step.y + snap_separation.y)));
					if (i == 0)
						last_cell = cell;
					if (last_cell != cell)
						edit_draw->draw_rect(Rect2(0, i - snap_separation.y * draw_zoom, s.width, snap_separation.y * draw_zoom), Color(0.3, 0.7, 1, 0.3));
					last_cell = cell;
				}
		}
	} else if (snap_mode == SNAP_AUTOSLICE) {
		for (List<Rect2>::Element *E = autoslice_cache.front(); E; E = E->next()) {
			Rect2 r = E->get();
			Vector2 endpoints[4] = {
				mtx.basis_xform(r.position),
				mtx.basis_xform(r.position + Vector2(r.size.x, 0)),
				mtx.basis_xform(r.position + r.size),
				mtx.basis_xform(r.position + Vector2(0, r.size.y))
			};
			for (int i = 0; i < 4; i++) {
				int next = (i + 1) % 4;
				edit_draw->draw_line(endpoints[i] - draw_ofs, endpoints[next] - draw_ofs, Color(0.3, 0.7, 1, 1), 2);
			}
		}
	}

	Ref<Texture> select_handle = get_icon("EditorHandle", "EditorIcons");

	Rect2 scroll_rect(Point2(), mtx.basis_xform(base_tex->get_size()));
	scroll_rect.expand_to(mtx.basis_xform(edit_draw->get_size()));

	Vector2 endpoints[4] = {
		mtx.basis_xform(rect.position),
		mtx.basis_xform(rect.position + Vector2(rect.size.x, 0)),
		mtx.basis_xform(rect.position + rect.size),
		mtx.basis_xform(rect.position + Vector2(0, rect.size.y))
	};
	Color color(0.9, 0.5, 0.5);
	for (int i = 0; i < 4; i++) {

		int prev = (i + 3) % 4;
		int next = (i + 1) % 4;

		Vector2 ofs = ((endpoints[i] - endpoints[prev]).normalized() + ((endpoints[i] - endpoints[next]).normalized())).normalized();
//.........这里部分代码省略.........

void TextureRegionEditor::_region_input(const Ref<InputEvent> &p_input) {
	Transform2D mtx;
	mtx.elements[2] = -draw_ofs;
	mtx.scale_basis(Vector2(draw_zoom, draw_zoom));

	Vector2 endpoints[8] = {
		mtx.xform(rect.position) + Vector2(-4, -4),
		mtx.xform(rect.position + Vector2(rect.size.x / 2, 0)) + Vector2(0, -4),
		mtx.xform(rect.position + Vector2(rect.size.x, 0)) + Vector2(4, -4),
		mtx.xform(rect.position + Vector2(rect.size.x, rect.size.y / 2)) + Vector2(4, 0),
		mtx.xform(rect.position + rect.size) + Vector2(4, 4),
		mtx.xform(rect.position + Vector2(rect.size.x / 2, rect.size.y)) + Vector2(0, 4),
		mtx.xform(rect.position + Vector2(0, rect.size.y)) + Vector2(-4, 4),
		mtx.xform(rect.position + Vector2(0, rect.size.y / 2)) + Vector2(-4, 0)
	};

	Ref<InputEventMouseButton> mb = p_input;
	if (mb.is_valid()) {

		if (mb->get_button_index() == BUTTON_LEFT) {

			if (mb->is_pressed()) {
				if (node_patch9 || obj_styleBox.is_valid()) {
					edited_margin = -1;
					float margins[4];
					if (node_patch9) {
						margins[0] = node_patch9->get_patch_margin(MARGIN_TOP);
						margins[1] = node_patch9->get_patch_margin(MARGIN_BOTTOM);
						margins[2] = node_patch9->get_patch_margin(MARGIN_LEFT);
						margins[3] = node_patch9->get_patch_margin(MARGIN_RIGHT);
					} else if (obj_styleBox.is_valid()) {
						margins[0] = obj_styleBox->get_margin_size(MARGIN_TOP);
						margins[1] = obj_styleBox->get_margin_size(MARGIN_BOTTOM);
						margins[2] = obj_styleBox->get_margin_size(MARGIN_LEFT);
						margins[3] = obj_styleBox->get_margin_size(MARGIN_RIGHT);
					}
					Vector2 pos[4] = {
						mtx.basis_xform(rect.position + Vector2(0, margins[0])) - draw_ofs,
						mtx.basis_xform(rect.position + rect.size - Vector2(0, margins[1])) - draw_ofs,
						mtx.basis_xform(rect.position + Vector2(margins[2], 0)) - draw_ofs,
						mtx.basis_xform(rect.position + rect.size - Vector2(margins[3], 0)) - draw_ofs
					};
					if (Math::abs(mb->get_position().y - pos[0].y) < 8) {
						edited_margin = 0;
						prev_margin = margins[0];
					} else if (Math::abs(mb->get_position().y - pos[1].y) < 8) {
						edited_margin = 1;
						prev_margin = margins[1];
					} else if (Math::abs(mb->get_position().x - pos[2].x) < 8) {
						edited_margin = 2;
						prev_margin = margins[2];
					} else if (Math::abs(mb->get_position().x - pos[3].x) < 8) {
						edited_margin = 3;
						prev_margin = margins[3];
					}
					if (edited_margin >= 0) {
						drag_from = Vector2(mb->get_position().x, mb->get_position().y);
						drag = true;
					}
				}
				if (edited_margin < 0 && snap_mode == SNAP_AUTOSLICE) {
					Vector2 point = mtx.affine_inverse().xform(Vector2(mb->get_position().x, mb->get_position().y));
					for (List<Rect2>::Element *E = autoslice_cache.front(); E; E = E->next()) {
						if (E->get().has_point(point)) {
							rect = E->get();
							if (Input::get_singleton()->is_key_pressed(KEY_CONTROL) && !(Input::get_singleton()->is_key_pressed(KEY_SHIFT | KEY_ALT))) {
								Rect2 r;
								if (node_sprite)
									r = node_sprite->get_region_rect();
								else if (node_patch9)
									r = node_patch9->get_region_rect();
								else if (obj_styleBox.is_valid())
									r = obj_styleBox->get_region_rect();
								else if (atlas_tex.is_valid())
									r = atlas_tex->get_region();
								rect.expand_to(r.position);
								rect.expand_to(r.position + r.size);
							}
							undo_redo->create_action(TTR("Set Region Rect"));
							if (node_sprite) {
								undo_redo->add_do_method(node_sprite, "set_region_rect", rect);
								undo_redo->add_undo_method(node_sprite, "set_region_rect", node_sprite->get_region_rect());
							} else if (node_patch9) {
								undo_redo->add_do_method(node_patch9, "set_region_rect", rect);
								undo_redo->add_undo_method(node_patch9, "set_region_rect", node_patch9->get_region_rect());
							} else if (obj_styleBox.is_valid()) {
								undo_redo->add_do_method(obj_styleBox.ptr(), "set_region_rect", rect);
								undo_redo->add_undo_method(obj_styleBox.ptr(), "set_region_rect", obj_styleBox->get_region_rect());
							} else if (atlas_tex.is_valid()) {
								undo_redo->add_do_method(atlas_tex.ptr(), "set_region", rect);
								undo_redo->add_undo_method(atlas_tex.ptr(), "set_region", atlas_tex->get_region());
							}
							undo_redo->add_do_method(edit_draw, "update");
							undo_redo->add_undo_method(edit_draw, "update");
							undo_redo->commit_action();
							break;
						}
					}
				} else if (edited_margin < 0) {
					drag_from = mtx.affine_inverse().xform(Vector2(mb->get_position().x, mb->get_position().y));
//.........这里部分代码省略.........

void Polygon2DEditor::_uv_draw() {

	Ref<Texture> base_tex = node->get_texture();
	if (base_tex.is_null())
		return;

	Transform2D mtx;
	mtx.elements[2] = -uv_draw_ofs;
	mtx.scale_basis(Vector2(uv_draw_zoom, uv_draw_zoom));

	VS::get_singleton()->canvas_item_add_set_transform(uv_edit_draw->get_canvas_item(), mtx);
	uv_edit_draw->draw_texture(base_tex, Point2());
	VS::get_singleton()->canvas_item_add_set_transform(uv_edit_draw->get_canvas_item(), Transform2D());

	if (snap_show_grid) {
		Size2 s = uv_edit_draw->get_size();
		int last_cell;

		if (snap_step.x != 0) {
			for (int i = 0; i < s.width; i++) {
				int cell = Math::fast_ftoi(Math::floor((mtx.affine_inverse().xform(Vector2(i, 0)).x - snap_offset.x) / snap_step.x));
				if (i == 0)
					last_cell = cell;
				if (last_cell != cell)
					uv_edit_draw->draw_line(Point2(i, 0), Point2(i, s.height), Color(0.3, 0.7, 1, 0.3));
				last_cell = cell;
			}
		}

		if (snap_step.y != 0) {
			for (int i = 0; i < s.height; i++) {
				int cell = Math::fast_ftoi(Math::floor((mtx.affine_inverse().xform(Vector2(0, i)).y - snap_offset.y) / snap_step.y));
				if (i == 0)
					last_cell = cell;
				if (last_cell != cell)
					uv_edit_draw->draw_line(Point2(0, i), Point2(s.width, i), Color(0.3, 0.7, 1, 0.3));
				last_cell = cell;
			}
		}
	}

	PoolVector<Vector2> uvs = node->get_uv();
	Ref<Texture> handle = get_icon("EditorHandle", "EditorIcons");

	Rect2 rect(Point2(), mtx.basis_xform(base_tex->get_size()));
	rect.expand_to(mtx.basis_xform(uv_edit_draw->get_size()));

	for (int i = 0; i < uvs.size(); i++) {

		int next = (i + 1) % uvs.size();
		uv_edit_draw->draw_line(mtx.xform(uvs[i]), mtx.xform(uvs[next]), Color(0.9, 0.5, 0.5), 2);
		uv_edit_draw->draw_texture(handle, mtx.xform(uvs[i]) - handle->get_size() * 0.5);
		rect.expand_to(mtx.basis_xform(uvs[i]));
	}

	rect = rect.grow(200);
	updating_uv_scroll = true;
	uv_hscroll->set_min(rect.position.x);
	uv_hscroll->set_max(rect.position.x + rect.size.x);
	uv_hscroll->set_page(uv_edit_draw->get_size().x);
	uv_hscroll->set_value(uv_draw_ofs.x);
	uv_hscroll->set_step(0.001);

	uv_vscroll->set_min(rect.position.y);
	uv_vscroll->set_max(rect.position.y + rect.size.y);
	uv_vscroll->set_page(uv_edit_draw->get_size().y);
	uv_vscroll->set_value(uv_draw_ofs.y);
	uv_vscroll->set_step(0.001);
	updating_uv_scroll = false;
}

void Polygon2DEditor::_uv_input(const Ref<InputEvent> &p_input) {

	Transform2D mtx;
	mtx.elements[2] = -uv_draw_ofs;
	mtx.scale_basis(Vector2(uv_draw_zoom, uv_draw_zoom));

	Ref<InputEventMouseButton> mb = p_input;

	if (mb.is_valid()) {

		if (mb->get_button_index() == BUTTON_LEFT) {

			if (mb->is_pressed()) {

				uv_drag_from = Vector2(mb->get_position().x, mb->get_position().y);
				uv_drag = true;
				uv_prev = node->get_uv();
				uv_move_current = uv_mode;
				if (uv_move_current == UV_MODE_EDIT_POINT) {

					if (mb->get_shift() && mb->get_command())
						uv_move_current = UV_MODE_SCALE;
					else if (mb->get_shift())
						uv_move_current = UV_MODE_MOVE;
					else if (mb->get_command())
						uv_move_current = UV_MODE_ROTATE;
				}

				if (uv_move_current == UV_MODE_EDIT_POINT) {

					uv_drag_index = -1;
					for (int i = 0; i < uv_prev.size(); i++) {

						Vector2 tuv = mtx.xform(uv_prev[i]);
						if (tuv.distance_to(Vector2(mb->get_position().x, mb->get_position().y)) < 8) {
							uv_drag_from = tuv;
							uv_drag_index = i;
						}
					}

					if (uv_drag_index == -1) {
						uv_drag = false;
					}
				}
			} else if (uv_drag) {

				undo_redo->create_action(TTR("Transform UV Map"));
				undo_redo->add_do_method(node, "set_uv", node->get_uv());
				undo_redo->add_undo_method(node, "set_uv", uv_prev);
				undo_redo->add_do_method(uv_edit_draw, "update");
				undo_redo->add_undo_method(uv_edit_draw, "update");
				undo_redo->commit_action();

				uv_drag = false;
			}

		} else if (mb->get_button_index() == BUTTON_RIGHT && mb->is_pressed()) {

			if (uv_drag) {

				uv_drag = false;
				node->set_uv(uv_prev);
				uv_edit_draw->update();
			}

		} else if (mb->get_button_index() == BUTTON_WHEEL_UP && mb->is_pressed()) {

			uv_zoom->set_value(uv_zoom->get_value() / (1 - (0.1 * mb->get_factor())));
		} else if (mb->get_button_index() == BUTTON_WHEEL_DOWN && mb->is_pressed()) {

			uv_zoom->set_value(uv_zoom->get_value() * (1 - (0.1 * mb->get_factor())));
		}
	}

	Ref<InputEventMouseMotion> mm = p_input;

	if (mm.is_valid()) {

		if (mm->get_button_mask() & BUTTON_MASK_MIDDLE || Input::get_singleton()->is_key_pressed(KEY_SPACE)) {

			Vector2 drag(mm->get_relative().x, mm->get_relative().y);
			uv_hscroll->set_value(uv_hscroll->get_value() - drag.x);
			uv_vscroll->set_value(uv_vscroll->get_value() - drag.y);

		} else if (uv_drag) {

			Vector2 uv_drag_to = mm->get_position();
			Vector2 drag = mtx.affine_inverse().xform(uv_drag_to) - mtx.affine_inverse().xform(uv_drag_from);

			switch (uv_move_current) {

				case UV_MODE_EDIT_POINT: {

					PoolVector<Vector2> uv_new = uv_prev;
					uv_new.set(uv_drag_index, uv_new[uv_drag_index] + drag);
					node->set_uv(uv_new);
				} break;
				case UV_MODE_MOVE: {

					PoolVector<Vector2> uv_new = uv_prev;
//.........这里部分代码省略.........