C++ Transform2D::scale_basis方法代码示例

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;
}

//.........这里部分代码省略.........
					camera_pos.y = new_camera_pos.y + screen_size.y * 0.5 * drag_margin[MARGIN_BOTTOM] * v_ofs;
				}
			}

		} else if (anchor_mode == ANCHOR_MODE_FIXED_TOP_LEFT) {

			camera_pos = new_camera_pos;
		}

		Point2 screen_offset = (anchor_mode == ANCHOR_MODE_DRAG_CENTER ? (screen_size * 0.5 * zoom) : Point2());
		Rect2 screen_rect(-screen_offset + camera_pos, screen_size * zoom);

		if (offset != Vector2())
			screen_rect.position += offset;

		if (limit_smoothing_enabled) {
			if (screen_rect.position.x < limit[MARGIN_LEFT])
				camera_pos.x -= screen_rect.position.x - limit[MARGIN_LEFT];

			if (screen_rect.position.x + screen_rect.size.x > limit[MARGIN_RIGHT])
				camera_pos.x -= screen_rect.position.x + screen_rect.size.x - limit[MARGIN_RIGHT];

			if (screen_rect.position.y + screen_rect.size.y > limit[MARGIN_BOTTOM])
				camera_pos.y -= screen_rect.position.y + screen_rect.size.y - limit[MARGIN_BOTTOM];

			if (screen_rect.position.y < limit[MARGIN_TOP])
				camera_pos.y -= screen_rect.position.y - limit[MARGIN_TOP];
		}

		if (smoothing_enabled && !Engine::get_singleton()->is_editor_hint()) {

			float c = smoothing * get_fixed_process_delta_time();
			smoothed_camera_pos = ((camera_pos - smoothed_camera_pos) * c) + smoothed_camera_pos;
			ret_camera_pos = smoothed_camera_pos;
			//camera_pos=camera_pos*(1.0-smoothing)+new_camera_pos*smoothing;
		} else {

			ret_camera_pos = smoothed_camera_pos = camera_pos;
		}

	} else {
		ret_camera_pos = smoothed_camera_pos = camera_pos = new_camera_pos;
		first = false;
	}

	Point2 screen_offset = (anchor_mode == ANCHOR_MODE_DRAG_CENTER ? (screen_size * 0.5 * zoom) : Point2());

	float angle = get_global_transform().get_rotation();
	if (rotating) {
		screen_offset = screen_offset.rotated(angle);
	}

	Rect2 screen_rect(-screen_offset + ret_camera_pos, screen_size * zoom);
	if (screen_rect.position.x < limit[MARGIN_LEFT])
		screen_rect.position.x = limit[MARGIN_LEFT];

	if (screen_rect.position.x + screen_rect.size.x > limit[MARGIN_RIGHT])
		screen_rect.position.x = limit[MARGIN_RIGHT] - screen_rect.size.x;

	if (screen_rect.position.y + screen_rect.size.y > limit[MARGIN_BOTTOM])
		screen_rect.position.y = limit[MARGIN_BOTTOM] - screen_rect.size.y;

	if (screen_rect.position.y < limit[MARGIN_TOP])
		screen_rect.position.y = limit[MARGIN_TOP];

	if (offset != Vector2()) {

		screen_rect.position += offset;
		if (screen_rect.position.x + screen_rect.size.x > limit[MARGIN_RIGHT])
			screen_rect.position.x = limit[MARGIN_RIGHT] - screen_rect.size.x;

		if (screen_rect.position.y + screen_rect.size.y > limit[MARGIN_BOTTOM])
			screen_rect.position.y = limit[MARGIN_BOTTOM] - screen_rect.size.y;

		if (screen_rect.position.x < limit[MARGIN_LEFT])
			screen_rect.position.x = limit[MARGIN_LEFT];

		if (screen_rect.position.y < limit[MARGIN_TOP])
			screen_rect.position.y = limit[MARGIN_TOP];
	}

	camera_screen_center = screen_rect.position + screen_rect.size * 0.5;

	Transform2D xform;
	if (rotating) {
		xform.set_rotation(angle);
	}
	xform.scale_basis(zoom);
	xform.set_origin(screen_rect.position /*.floor()*/);

	/*
	if (0) {
		xform = get_global_transform() * xform;
	} else {
		xform.elements[2]+=get_global_transform().get_origin();
	}
*/

	return (xform).affine_inverse();
}

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.........