638 lines
18 KiB
C++
638 lines
18 KiB
C++
/*************************************************************************/
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/* camera_2d.cpp */
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/*************************************************************************/
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/* This file is part of: */
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/* GODOT ENGINE */
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/* http://www.godotengine.org */
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/*************************************************************************/
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/* Copyright (c) 2007-2016 Juan Linietsky, Ariel Manzur. */
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/* */
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/* Permission is hereby granted, free of charge, to any person obtaining */
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/* a copy of this software and associated documentation files (the */
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/* "Software"), to deal in the Software without restriction, including */
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/* without limitation the rights to use, copy, modify, merge, publish, */
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/* distribute, sublicense, and/or sell copies of the Software, and to */
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/* permit persons to whom the Software is furnished to do so, subject to */
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/* the following conditions: */
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/* */
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/* The above copyright notice and this permission notice shall be */
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/* included in all copies or substantial portions of the Software. */
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/* */
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/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
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/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
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/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
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/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
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/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
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/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
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/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
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/*************************************************************************/
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#include "camera_2d.h"
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#include "scene/scene_string_names.h"
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#include "servers/visual_server.h"
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void Camera2D::_update_scroll() {
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if (!is_inside_tree())
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return;
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if (get_tree()->is_editor_hint()) {
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update(); //will just be drawn
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return;
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}
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if (current) {
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Matrix32 xform = get_camera_transform();
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if (viewport) {
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viewport->set_canvas_transform( xform );
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}
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get_tree()->call_group(SceneTree::GROUP_CALL_REALTIME,group_name,"_camera_moved",xform);
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};
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}
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void Camera2D::set_zoom(const Vector2 &p_zoom) {
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zoom = p_zoom;
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Point2 old_smoothed_camera_pos = smoothed_camera_pos;
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_update_scroll();
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smoothed_camera_pos = old_smoothed_camera_pos;
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};
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Vector2 Camera2D::get_zoom() const {
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return zoom;
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};
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Matrix32 Camera2D::get_camera_transform() {
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if (!get_tree())
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return Matrix32();
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Size2 screen_size = get_viewport_rect().size;
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screen_size=get_viewport_rect().size;
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Point2 new_camera_pos = get_global_transform().get_origin();
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Point2 ret_camera_pos;
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if (!first) {
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if (anchor_mode==ANCHOR_MODE_DRAG_CENTER) {
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if (h_drag_enabled && !get_tree()->is_editor_hint()) {
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camera_pos.x = MIN( camera_pos.x, (new_camera_pos.x + screen_size.x * 0.5 * drag_margin[MARGIN_RIGHT]));
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camera_pos.x = MAX( camera_pos.x, (new_camera_pos.x - screen_size.x * 0.5 * drag_margin[MARGIN_LEFT]));
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} else {
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if (h_ofs<0) {
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camera_pos.x = new_camera_pos.x + screen_size.x * 0.5 * drag_margin[MARGIN_RIGHT] * h_ofs;
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} else {
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camera_pos.x = new_camera_pos.x + screen_size.x * 0.5 * drag_margin[MARGIN_LEFT] * h_ofs;
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}
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}
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if (v_drag_enabled && !get_tree()->is_editor_hint()) {
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camera_pos.y = MIN( camera_pos.y, (new_camera_pos.y + screen_size.y * 0.5 * drag_margin[MARGIN_BOTTOM]));
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camera_pos.y = MAX( camera_pos.y, (new_camera_pos.y - screen_size.y * 0.5 * drag_margin[MARGIN_TOP]));
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} else {
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if (v_ofs<0) {
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camera_pos.y = new_camera_pos.y + screen_size.y * 0.5 * drag_margin[MARGIN_TOP] * v_ofs;
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} else {
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camera_pos.y = new_camera_pos.y + screen_size.y * 0.5 * drag_margin[MARGIN_BOTTOM] * v_ofs;
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}
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}
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} else if (anchor_mode==ANCHOR_MODE_FIXED_TOP_LEFT){
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camera_pos=new_camera_pos;
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}
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if (smoothing_enabled && !get_tree()->is_editor_hint()) {
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float c = smoothing*get_fixed_process_delta_time();
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smoothed_camera_pos = ((camera_pos-smoothed_camera_pos)*c)+smoothed_camera_pos;
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ret_camera_pos=smoothed_camera_pos;
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// camera_pos=camera_pos*(1.0-smoothing)+new_camera_pos*smoothing;
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} else {
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ret_camera_pos=smoothed_camera_pos=camera_pos;
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}
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} else {
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ret_camera_pos=smoothed_camera_pos=camera_pos=new_camera_pos;
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first=false;
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}
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Point2 screen_offset = (anchor_mode==ANCHOR_MODE_DRAG_CENTER ? (screen_size * 0.5 * zoom) : Point2());
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float angle = get_global_transform().get_rotation();
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if(rotating){
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screen_offset = screen_offset.rotated(angle);
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}
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Rect2 screen_rect(-screen_offset+ret_camera_pos,screen_size*zoom);
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if (screen_rect.pos.x + screen_rect.size.x > limit[MARGIN_RIGHT])
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screen_rect.pos.x = limit[MARGIN_RIGHT] - screen_rect.size.x;
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if (screen_rect.pos.y + screen_rect.size.y > limit[MARGIN_BOTTOM])
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screen_rect.pos.y = limit[MARGIN_BOTTOM] - screen_rect.size.y;
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if (screen_rect.pos.x < limit[MARGIN_LEFT])
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screen_rect.pos.x=limit[MARGIN_LEFT];
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if (screen_rect.pos.y < limit[MARGIN_TOP])
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screen_rect.pos.y =limit[MARGIN_TOP];
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if (offset!=Vector2()) {
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screen_rect.pos+=offset;
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if (screen_rect.pos.x + screen_rect.size.x > limit[MARGIN_RIGHT])
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screen_rect.pos.x = limit[MARGIN_RIGHT] - screen_rect.size.x;
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if (screen_rect.pos.y + screen_rect.size.y > limit[MARGIN_BOTTOM])
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screen_rect.pos.y = limit[MARGIN_BOTTOM] - screen_rect.size.y;
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if (screen_rect.pos.x < limit[MARGIN_LEFT])
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screen_rect.pos.x=limit[MARGIN_LEFT];
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if (screen_rect.pos.y < limit[MARGIN_TOP])
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screen_rect.pos.y =limit[MARGIN_TOP];
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}
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camera_screen_center=screen_rect.pos+screen_rect.size*0.5;
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Matrix32 xform;
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if(rotating){
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xform.set_rotation(angle);
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}
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xform.scale_basis(zoom);
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xform.set_origin(screen_rect.pos/*.floor()*/);
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/*
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if (0) {
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xform = get_global_transform() * xform;
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} else {
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xform.elements[2]+=get_global_transform().get_origin();
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}
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*/
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return (xform).affine_inverse();
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}
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void Camera2D::_notification(int p_what) {
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switch(p_what) {
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case NOTIFICATION_FIXED_PROCESS: {
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_update_scroll();
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} break;
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case NOTIFICATION_TRANSFORM_CHANGED: {
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if (!is_fixed_processing())
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_update_scroll();
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} break;
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case NOTIFICATION_ENTER_TREE: {
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viewport = NULL;
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Node *n=this;
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while(n){
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viewport = n->cast_to<Viewport>();
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if (viewport)
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break;
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n=n->get_parent();
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}
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canvas = get_canvas();
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RID vp = viewport->get_viewport();
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group_name = "__cameras_"+itos(vp.get_id());
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canvas_group_name ="__cameras_c"+itos(canvas.get_id());
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add_to_group(group_name);
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add_to_group(canvas_group_name);
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if(get_tree()->is_editor_hint()) {
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set_fixed_process(false);
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}
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_update_scroll();
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first=true;
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} break;
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case NOTIFICATION_EXIT_TREE: {
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if (is_current()) {
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if (viewport) {
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viewport->set_canvas_transform( Matrix32() );
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}
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}
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remove_from_group(group_name);
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remove_from_group(canvas_group_name);
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viewport=NULL;
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} break;
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case NOTIFICATION_DRAW: {
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if (!is_inside_tree() || !get_tree()->is_editor_hint())
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break;
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Color area_axis_color(0.5, 0.42, 0.87, 0.63);
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float area_axis_width = 1;
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if(current)
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area_axis_width = 3;
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Matrix32 inv_camera_transform = get_camera_transform().affine_inverse();
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Size2 screen_size = get_viewport_rect().size;
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Vector2 screen_endpoints[4]= {
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inv_camera_transform.xform(Vector2(0, 0)),
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inv_camera_transform.xform(Vector2(screen_size.width,0)),
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inv_camera_transform.xform(Vector2(screen_size.width, screen_size.height)),
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inv_camera_transform.xform(Vector2(0, screen_size.height))
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};
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Matrix32 inv_transform = get_global_transform().affine_inverse(); // undo global space
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for(int i=0;i<4;i++) {
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draw_line(inv_transform.xform(screen_endpoints[i]), inv_transform.xform(screen_endpoints[(i+1)%4]), area_axis_color, area_axis_width);
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}
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} break;
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}
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}
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void Camera2D::set_offset(const Vector2& p_offset) {
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offset=p_offset;
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_update_scroll();
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}
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Vector2 Camera2D::get_offset() const{
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return offset;
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}
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void Camera2D::set_anchor_mode(AnchorMode p_anchor_mode){
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anchor_mode=p_anchor_mode;
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_update_scroll();
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}
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Camera2D::AnchorMode Camera2D::get_anchor_mode() const {
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return anchor_mode;
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}
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void Camera2D::set_rotating(bool p_rotating){
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rotating=p_rotating;
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_update_scroll();
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}
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bool Camera2D::is_rotating() const {
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return rotating;
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}
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void Camera2D::_make_current(Object *p_which) {
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if (p_which==this) {
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current=true;
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_update_scroll();
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} else {
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current=false;
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}
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}
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void Camera2D::_set_current(bool p_current) {
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if (p_current)
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make_current();
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current=p_current;
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}
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bool Camera2D::is_current() const {
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return current;
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}
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void Camera2D::make_current() {
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if (!is_inside_tree()) {
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current=true;
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} else {
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get_tree()->call_group(SceneTree::GROUP_CALL_REALTIME,group_name,"_make_current",this);
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}
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}
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void Camera2D::clear_current() {
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current=false;
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if (is_inside_tree()) {
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get_tree()->call_group(SceneTree::GROUP_CALL_REALTIME,group_name,"_make_current",(Object*)(NULL));
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}
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}
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void Camera2D::set_limit(Margin p_margin,int p_limit) {
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ERR_FAIL_INDEX(p_margin,4);
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limit[p_margin]=p_limit;
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}
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int Camera2D::get_limit(Margin p_margin) const{
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ERR_FAIL_INDEX_V(p_margin,4,0);
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return limit[p_margin];
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}
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void Camera2D::set_drag_margin(Margin p_margin,float p_drag_margin) {
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ERR_FAIL_INDEX(p_margin,4);
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drag_margin[p_margin]=p_drag_margin;
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}
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float Camera2D::get_drag_margin(Margin p_margin) const{
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ERR_FAIL_INDEX_V(p_margin,4,0);
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return drag_margin[p_margin];
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}
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Vector2 Camera2D::get_camera_pos() const {
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return camera_pos;
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}
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void Camera2D::force_update_scroll() {
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_update_scroll();
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}
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void Camera2D::reset_smoothing() {
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smoothed_camera_pos = camera_pos;
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_update_scroll();
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}
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void Camera2D::align() {
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Size2 screen_size = get_viewport_rect().size;
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screen_size=get_viewport_rect().size;
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Point2 current_camera_pos = get_global_transform().get_origin();
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if (anchor_mode==ANCHOR_MODE_DRAG_CENTER) {
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if (h_ofs<0) {
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camera_pos.x = current_camera_pos.x + screen_size.x * 0.5 * drag_margin[MARGIN_RIGHT] * h_ofs;
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} else {
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camera_pos.x = current_camera_pos.x + screen_size.x * 0.5 * drag_margin[MARGIN_LEFT] * h_ofs;
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}
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if (v_ofs<0) {
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camera_pos.y = current_camera_pos.y + screen_size.y * 0.5 * drag_margin[MARGIN_TOP] * v_ofs;
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} else {
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camera_pos.y = current_camera_pos.y + screen_size.y * 0.5 * drag_margin[MARGIN_BOTTOM] * v_ofs;
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}
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} else if (anchor_mode==ANCHOR_MODE_FIXED_TOP_LEFT){
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camera_pos=current_camera_pos;
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}
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_update_scroll();
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}
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void Camera2D::set_follow_smoothing(float p_speed) {
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smoothing=p_speed;
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if (smoothing>0 && !(is_inside_tree() && get_tree()->is_editor_hint()))
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set_fixed_process(true);
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else
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set_fixed_process(false);
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}
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float Camera2D::get_follow_smoothing() const{
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return smoothing;
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}
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Point2 Camera2D::get_camera_screen_center() const {
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return camera_screen_center;
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}
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void Camera2D::set_h_drag_enabled(bool p_enabled) {
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h_drag_enabled=p_enabled;
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}
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bool Camera2D::is_h_drag_enabled() const{
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return h_drag_enabled;
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}
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void Camera2D::set_v_drag_enabled(bool p_enabled){
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v_drag_enabled=p_enabled;
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}
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bool Camera2D::is_v_drag_enabled() const{
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return v_drag_enabled;
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}
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void Camera2D::set_v_offset(float p_offset) {
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v_ofs=p_offset;
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}
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float Camera2D::get_v_offset() const{
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return v_ofs;
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}
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void Camera2D::set_h_offset(float p_offset){
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h_ofs=p_offset;
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}
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float Camera2D::get_h_offset() const{
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return h_ofs;
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}
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void Camera2D::_set_old_smoothing(float p_val) {
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//compatibility
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if (p_val>0) {
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smoothing_enabled=true;
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set_follow_smoothing(p_val);
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}
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}
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void Camera2D::set_enable_follow_smoothing(bool p_enabled) {
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smoothing_enabled=p_enabled;
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}
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bool Camera2D::is_follow_smoothing_enabled() const {
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return smoothing_enabled;
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}
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void Camera2D::_bind_methods() {
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ObjectTypeDB::bind_method(_MD("set_offset","offset"),&Camera2D::set_offset);
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ObjectTypeDB::bind_method(_MD("get_offset"),&Camera2D::get_offset);
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ObjectTypeDB::bind_method(_MD("set_anchor_mode","anchor_mode"),&Camera2D::set_anchor_mode);
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ObjectTypeDB::bind_method(_MD("get_anchor_mode"),&Camera2D::get_anchor_mode);
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ObjectTypeDB::bind_method(_MD("set_rotating","rotating"),&Camera2D::set_rotating);
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ObjectTypeDB::bind_method(_MD("is_rotating"),&Camera2D::is_rotating);
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ObjectTypeDB::bind_method(_MD("make_current"),&Camera2D::make_current);
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ObjectTypeDB::bind_method(_MD("clear_current"),&Camera2D::clear_current);
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ObjectTypeDB::bind_method(_MD("_make_current"),&Camera2D::_make_current);
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ObjectTypeDB::bind_method(_MD("_update_scroll"),&Camera2D::_update_scroll);
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ObjectTypeDB::bind_method(_MD("_set_current","current"),&Camera2D::_set_current);
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ObjectTypeDB::bind_method(_MD("is_current"),&Camera2D::is_current);
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ObjectTypeDB::bind_method(_MD("set_limit","margin","limit"),&Camera2D::set_limit);
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ObjectTypeDB::bind_method(_MD("get_limit","margin"),&Camera2D::get_limit);
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ObjectTypeDB::bind_method(_MD("set_v_drag_enabled","enabled"),&Camera2D::set_v_drag_enabled);
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ObjectTypeDB::bind_method(_MD("is_v_drag_enabled"),&Camera2D::is_v_drag_enabled);
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ObjectTypeDB::bind_method(_MD("set_h_drag_enabled","enabled"),&Camera2D::set_h_drag_enabled);
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ObjectTypeDB::bind_method(_MD("is_h_drag_enabled"),&Camera2D::is_h_drag_enabled);
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ObjectTypeDB::bind_method(_MD("set_v_offset","ofs"),&Camera2D::set_v_offset);
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ObjectTypeDB::bind_method(_MD("get_v_offset"),&Camera2D::get_v_offset);
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ObjectTypeDB::bind_method(_MD("set_h_offset","ofs"),&Camera2D::set_h_offset);
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ObjectTypeDB::bind_method(_MD("get_h_offset"),&Camera2D::get_h_offset);
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ObjectTypeDB::bind_method(_MD("set_drag_margin","margin","drag_margin"),&Camera2D::set_drag_margin);
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ObjectTypeDB::bind_method(_MD("get_drag_margin","margin"),&Camera2D::get_drag_margin);
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ObjectTypeDB::bind_method(_MD("get_camera_pos"),&Camera2D::get_camera_pos);
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ObjectTypeDB::bind_method(_MD("get_camera_screen_center"),&Camera2D::get_camera_screen_center);
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ObjectTypeDB::bind_method(_MD("set_zoom","zoom"),&Camera2D::set_zoom);
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ObjectTypeDB::bind_method(_MD("get_zoom"),&Camera2D::get_zoom);
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ObjectTypeDB::bind_method(_MD("set_follow_smoothing","follow_smoothing"),&Camera2D::set_follow_smoothing);
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ObjectTypeDB::bind_method(_MD("get_follow_smoothing"),&Camera2D::get_follow_smoothing);
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ObjectTypeDB::bind_method(_MD("set_enable_follow_smoothing","follow_smoothing"),&Camera2D::set_enable_follow_smoothing);
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ObjectTypeDB::bind_method(_MD("is_follow_smoothing_enabled"),&Camera2D::is_follow_smoothing_enabled);
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ObjectTypeDB::bind_method(_MD("force_update_scroll"),&Camera2D::force_update_scroll);
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ObjectTypeDB::bind_method(_MD("reset_smoothing"),&Camera2D::reset_smoothing);
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ObjectTypeDB::bind_method(_MD("align"),&Camera2D::align);
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ObjectTypeDB::bind_method(_MD("_set_old_smoothing","follow_smoothing"),&Camera2D::_set_old_smoothing);
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ADD_PROPERTYNZ( PropertyInfo(Variant::VECTOR2,"offset"),_SCS("set_offset"),_SCS("get_offset"));
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ADD_PROPERTY( PropertyInfo(Variant::INT,"anchor_mode",PROPERTY_HINT_ENUM,"Fixed TopLeft,Drag Center"),_SCS("set_anchor_mode"),_SCS("get_anchor_mode"));
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ADD_PROPERTY( PropertyInfo(Variant::BOOL,"rotating"),_SCS("set_rotating"),_SCS("is_rotating"));
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ADD_PROPERTY( PropertyInfo(Variant::BOOL,"current"),_SCS("_set_current"),_SCS("is_current"));
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ADD_PROPERTY( PropertyInfo(Variant::VECTOR2,"zoom"),_SCS("set_zoom"),_SCS("get_zoom") );
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ADD_PROPERTYI( PropertyInfo(Variant::INT,"limit/left"),_SCS("set_limit"),_SCS("get_limit"),MARGIN_LEFT);
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ADD_PROPERTYI( PropertyInfo(Variant::INT,"limit/top"),_SCS("set_limit"),_SCS("get_limit"),MARGIN_TOP);
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ADD_PROPERTYI( PropertyInfo(Variant::INT,"limit/right"),_SCS("set_limit"),_SCS("get_limit"),MARGIN_RIGHT);
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ADD_PROPERTYI( PropertyInfo(Variant::INT,"limit/bottom"),_SCS("set_limit"),_SCS("get_limit"),MARGIN_BOTTOM);
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ADD_PROPERTY( PropertyInfo(Variant::BOOL,"drag_margin/h_enabled"),_SCS("set_h_drag_enabled"),_SCS("is_h_drag_enabled") );
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ADD_PROPERTY( PropertyInfo(Variant::BOOL,"drag_margin/v_enabled"),_SCS("set_v_drag_enabled"),_SCS("is_v_drag_enabled") );
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ADD_PROPERTY( PropertyInfo(Variant::BOOL,"smoothing/enable"),_SCS("set_enable_follow_smoothing"),_SCS("is_follow_smoothing_enabled") );
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ADD_PROPERTY( PropertyInfo(Variant::REAL,"smoothing/speed"),_SCS("set_follow_smoothing"),_SCS("get_follow_smoothing") );
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//compatibility
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ADD_PROPERTY( PropertyInfo(Variant::REAL,"smoothing",PROPERTY_HINT_NONE,"",0),_SCS("_set_old_smoothing"),_SCS("get_follow_smoothing") );
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ADD_PROPERTYI( PropertyInfo(Variant::REAL,"drag_margin/left",PROPERTY_HINT_RANGE,"0,1,0.01"),_SCS("set_drag_margin"),_SCS("get_drag_margin"),MARGIN_LEFT);
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ADD_PROPERTYI( PropertyInfo(Variant::REAL,"drag_margin/top",PROPERTY_HINT_RANGE,"0,1,0.01"),_SCS("set_drag_margin"),_SCS("get_drag_margin"),MARGIN_TOP);
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ADD_PROPERTYI( PropertyInfo(Variant::REAL,"drag_margin/right",PROPERTY_HINT_RANGE,"0,1,0.01"),_SCS("set_drag_margin"),_SCS("get_drag_margin"),MARGIN_RIGHT);
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ADD_PROPERTYI( PropertyInfo(Variant::REAL,"drag_margin/bottom",PROPERTY_HINT_RANGE,"0,1,0.01"),_SCS("set_drag_margin"),_SCS("get_drag_margin"),MARGIN_BOTTOM);
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BIND_CONSTANT( ANCHOR_MODE_DRAG_CENTER );
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BIND_CONSTANT( ANCHOR_MODE_FIXED_TOP_LEFT );
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}
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Camera2D::Camera2D() {
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anchor_mode=ANCHOR_MODE_DRAG_CENTER;
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rotating=false;
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current=false;
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limit[MARGIN_LEFT]=-10000000;
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limit[MARGIN_TOP]=-10000000;
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limit[MARGIN_RIGHT]=10000000;
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limit[MARGIN_BOTTOM]=10000000;
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drag_margin[MARGIN_LEFT]=0.2;
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drag_margin[MARGIN_TOP]=0.2;
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drag_margin[MARGIN_RIGHT]=0.2;
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drag_margin[MARGIN_BOTTOM]=0.2;
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camera_pos=Vector2();
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first=true;
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smoothing_enabled=false;
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smoothing=5.0;
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zoom = Vector2(1, 1);
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h_drag_enabled=true;
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v_drag_enabled=true;
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h_ofs=0;
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v_ofs=0;
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}
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