Pixel-Composer/scripts/node_armature/node_armature.gml

function Node_Armature(_x, _y, _group = noone) : Node(_x, _y, _group) constructor {
	name = "Armature Create";
	setDimension(96, 96);
	draw_padding = 8;
	
	bone_renderer = new Inspector_Custom_Renderer(function(_x, _y, _w, _m, _hover, _focus) { 
		var _b  = bones;
		if(_b == noone) return 0;
		var amo = _b.childCount();
		var _hh = ui(28);
		var bh  = ui(32 + 16) + amo * _hh;
		var ty  = _y;
			
		draw_set_text(f_p2, fa_left, fa_top, COLORS._main_text_sub);
		draw_text_add(_x + ui(16), ty + ui(4), __txt("Bones"));
		ty += ui(28);
		
		draw_sprite_stretched_ext(THEME.ui_panel_bg, 1, _x, ty, _w, bh - ui(32), COLORS.node_composite_bg_blend, 1);
		ty += ui(8);
		
		var hovering = noone;
		var _bst = ds_stack_create();
		ds_stack_push(_bst, [ _b, _x, _w ]);
		
		var bone_remove = noone;
		
		while(!ds_stack_empty(_bst)) {
			var _st  = ds_stack_pop(_bst);
			var bone = _st[0];
			var __x  = _st[1];
			var __w  = _st[2];
			
			for( var i = 0, n = array_length(bone.childs); i < n; i++ )
				ds_stack_push(_bst, [ bone.childs[i], __x + 16, __w - 16 ]);
				
			if(bone.is_main) continue;
			
			if(bone.parent_anchor) 
				draw_sprite_ui(THEME.bone, 1, __x + 12, ty + 14,,,, COLORS._main_icon);
				
			else if(bone.IKlength) 
				draw_sprite_ui(THEME.bone, 2, __x + 12, ty + 14,,,, COLORS._main_icon);
				
			else {
				if(_hover && point_in_circle(_m[0], _m[1], __x + 12, ty + 12, 12)) {
					draw_sprite_ui(THEME.bone, 0, __x + 12, ty + 14,,,, COLORS._main_icon_light);
					if(mouse_press(mb_left, _focus))
						bone_dragging = bone;
				} else 
					draw_sprite_ui(THEME.bone, 0, __x + 12, ty + 14,,,, COLORS._main_icon);
			}
				
			if(point_in_rectangle(_m[0], _m[1], __x + 24, ty + 3, __x + __w, ty + _hh - 3))
				anchor_selecting = [ bone, 2 ];
			
			var bx = __x + __w - 24;
			var by = ty + _hh / 2;
			
			if(point_in_circle(_m[0], _m[1], bx, by, 16)) {
				draw_sprite_ui_uniform(THEME.icon_delete, 3, bx, by, 1, COLORS._main_value_negative);
				
				if(mouse_press(mb_left, _focus))
					bone_remove = bone;
			} else 
				draw_sprite_ui_uniform(THEME.icon_delete, 3, bx, by, 1, COLORS._main_icon);
			
			draw_set_font(f_p2);
			var ww = string_width(bone.name);
			
			bone.tb_name.setFocusHover(_focus, _hover);
			bone.tb_name.draw(__x + 24, ty + 3, ww + 16, _hh - 6, bone.name, _m);
			
			var _x0 = __x + 24 + ww + 32;
			var _y0 = ty + 14;
			var cc  = bone.apply_scale? COLORS._main_icon : COLORS._main_value_negative;
			if(point_in_circle(_m[0], _m[1], _x0, _y0, 16)) {
				TOOLTIP = "Apply scale";
				draw_sprite_ui(THEME.bone, 3, _x0, _y0,,,, cc, 0.75);
				
				if(mouse_press(mb_left, _focus))
					bone.apply_scale = !bone.apply_scale;
			} else 
				draw_sprite_ui(THEME.bone, 3, _x0, _y0,,,, cc, 0.5);
			
			_x0 += 20;
			var cc  = bone.apply_rotation? COLORS._main_icon : COLORS._main_value_negative;
			if(point_in_circle(_m[0], _m[1], _x0, _y0, 16)) {
				TOOLTIP = "Apply rotation";
				draw_sprite_ui(THEME.bone, 4, _x0, _y0,,,, cc, 0.75);
				
				if(mouse_press(mb_left, _focus))
					bone.apply_rotation = !bone.apply_rotation;
			} else 
				draw_sprite_ui(THEME.bone, 4, _x0, _y0,,,, cc, 0.5);
			
			ty += _hh;
				
			if(!ds_stack_empty(_bst)) {
				draw_set_color(COLORS.node_composite_separator);
				draw_line(_x + 16, ty, _x + _w - 16, ty);
			}
		}
		
		ds_stack_destroy(_bst);
		
		if(bone_dragging && mouse_release(mb_left))
			bone_dragging = noone;
			
		if(bone_remove != noone) {
			var _par = bone_remove.parent;
			recordAction(ACTION_TYPE.struct_modify, bones, bones.serialize());
			array_remove(_par.childs, bone_remove);
				
			for( var i = 0, n = array_length(bone_remove.childs); i < n; i++ ) {
				var _ch = bone_remove.childs[i];
				_par.addChild(_ch);
						
				_ch.parent_anchor = bone_remove.parent_anchor;
			}
		}
		
		return bh;
	}); 
	
	input_display_list = [
		bone_renderer,
	];
	
	static createBone = function(parent, distance, direction) { 
		recordAction(ACTION_TYPE.struct_modify, bones, bones.serialize());
		
		var bone  = new __Bone(parent, distance, direction, 0, 0, self);
		parent.addChild(bone);
		
		if(parent == bones)
			bone.parent_anchor = false;
		
		bone.distance      = distance;
		bone.direction     = direction;
		
		return bone;
	} 
	
	newOutput(0, nodeValue_Output("Armature", self, VALUE_TYPE.armature, noone));
	
	#region ++++ attributes ++++
		bones         = new __Bone(,,,,, self);
		bones.name    = "Main";
		bones.is_main = true;
		bones.node    = self;
		
		attributes.display_name = true;
		attributes.display_bone = 0;
		
		array_push(attributeEditors, "Display");
		array_push(attributeEditors, ["Display name", function() /*=>*/ {return attributes.display_name}, new checkBox(function() /*=>*/ { attributes.display_name = !attributes.display_name; })]);
		array_push(attributeEditors, ["Display bone", function() /*=>*/ {return attributes.display_bone}, new scrollBox(["Octahedral", "Stick"], function(ind) /*=>*/ { attributes.display_bone = ind; })]);
	#endregion
	
	tools = [
		new NodeTool( "Transform",          		    THEME.bone_tool_move   ),
		new NodeTool( [ "Add bones", "Mirror bones"], [ THEME.bone_tool_add, THEME.bone_tool_mirror ]),
		new NodeTool( "Remove bones",                   THEME.bone_tool_remove ),
		new NodeTool( "Detach bones",                   THEME.bone_tool_detach ),
		new NodeTool( "IK",                             THEME.bone_tool_IK     ),
	];
	
	anchor_selecting = noone;
	builder_bone = noone;
	builder_type = 0;
	builder_sv   = 0;
	builder_sx   = 0;
	builder_sy   = 0;
	builder_mx   = 0;
	builder_my   = 0;
	
	bone_dragging = noone;
	ik_dragging   = noone;
	
	moving  = false;
	scaling = false;
	
	bone_arr        = [];
	bone_point_maps = [];
	bone_point_mape = [];
	
	bone_bbox = undefined;
	bone_transform_bbox = -1;
	bone_transform_type = -1;
	
	mirroring_bone = noone;
	
	static drawOverlay = function(hover, active, _x, _y, _s, _mx, _my, _snx, _sny, _panel) { 
		var mx = (_mx - _x) / _s;
		var my = (_my - _y) / _s;
		
		var smx = value_snap(mx, _snx);
		var smy = value_snap(my, _sny);
		
		var _b = bones;
		
		if(builder_bone != noone) {
			gpu_set_texfilter(true);
				
			anchor_selecting = _b.draw(attributes, false, _x, _y, _s, _mx, _my, anchor_selecting, builder_bone);
			_b.drawControl(attributes);
			
			var dir = point_direction(builder_sx, builder_sy, smx, smy);
			var dis = point_distance(builder_sx, builder_sy, smx, smy);
			
			if(builder_type == 2) {
				var an = point_direction(builder_sx, builder_sy, mx, my);
				builder_bone.angle += angle_difference(an, builder_sv);
				builder_sv = an;
				
				var _rx = _x + _s * builder_sx;
				var _ry = _y + _s * builder_sy;
				draw_sprite_ext(s_bone_rotate, 0, _rx, _ry, 1, 1, builder_bone.angle, COLORS._main_value_positive, 1);
			
			} else if(builder_type == 3) {
				
				builder_bone.length = point_distance(builder_sx, builder_sy, mx, my) / builder_sv;
				
				orig = builder_bone.getPoint(0.8);
				var _rx = _x + _s * orig.x;
				var _ry = _y + _s * orig.y;
				draw_sprite_ext(s_bone_scale,  0, _rx, _ry, 1, 1, builder_bone.angle, COLORS._main_value_positive, 1);
			
			} else if(key_mod_press(ALT)) {
				if(builder_type == 0) {
					var bo = builder_bone.getTail();
					
					builder_bone.direction = dir;
					builder_bone.distance  = dis;
					
					var bn = builder_bone.getHead();
					
					builder_bone.angle  = point_direction(bn.x, bn.y, bo.x, bo.y);
					builder_bone.length = point_distance( bn.x, bn.y, bo.x, bo.y);
					
				} else if(builder_type == 1) {
					var chs = [];
					for( var i = 0, n = array_length(builder_bone.childs); i < n; i++ ) {
						var ch = builder_bone.childs[i];
						chs[i] = ch.getTail();
					}
				
					builder_bone.angle  = dir;
					builder_bone.length = dis;
					
					for( var i = 0, n = array_length(builder_bone.childs); i < n; i++ ) {
						var ch = builder_bone.childs[i];
						var c0 = ch.getHead();
					
						ch.angle  = point_direction(c0.x, c0.y, chs[i].x, chs[i].y);
						ch.length = point_distance( c0.x, c0.y, chs[i].x, chs[i].y);
					}
				}
			} else {
				if(builder_type == 0) {
					builder_bone.direction = dir;
					builder_bone.distance  = dis;
					
					if(builder_bone.parent) {
						var par_anc  = builder_bone.parent.getTail();
						var par_ancx = _x + par_anc.x * _s;
						var par_ancy = _y + par_anc.y * _s;
						
						var inRange = point_in_circle(_mx, _my, par_ancx, par_ancy, 16) && mouse_release(mb_left);
						if(!builder_bone.parent.is_main && builder_bone.IKlength > 0 && inRange)
							builder_bone.parent_anchor = true;
							
					}
					
					orig = builder_bone.getHead();
					var _rx = _x + _s * orig.x;
					var _ry = _y + _s * orig.y;
					draw_sprite_ext(s_bone_move, 0, _rx, _ry, 1, 1, 0, COLORS._main_value_positive, 1);
					
				} else if(builder_type == 1) {
					builder_bone.angle  = dir;
					builder_bone.length = dis;
					
					orig = builder_bone.getTail();
					var _rx = _x + _s * orig.x;
					var _ry = _y + _s * orig.y;
					draw_sprite_ext(s_bone_move, 0, _rx, _ry, 1, 1, 0, COLORS._main_value_positive, 1);
				}
			}
			
			if(mouse_release(mb_left)) {
				builder_bone = noone;
				UNDO_HOLDING = false;
			}
			
			gpu_set_texfilter(false);
			triggerRender();
				
		} else if(ik_dragging != noone) { 
			anchor_selecting = _b.draw(attributes, active * 0b100, _x, _y, _s, _mx, _my, anchor_selecting, ik_dragging);
			_b.drawControl(attributes);
			
			var _bone = ik_dragging;
			var p1    = ik_dragging.getTail();
			var p1x   = _x + p1.x * _s;
			var p1y   = _y + p1.y * _s;
				
			if(anchor_selecting != noone && anchor_selecting[1] == 2) {
				var anc    = anchor_selecting[0];
				var bne    = anc;
				var _reach = false;
				var _blen  = 0;
				
				while(_bone != noone) {
					_blen++;
					_bone = _bone.parent;
					
					if(_bone == anc.parent) {
						_reach = true;
						bne    = anc;
						anc    = anc.parent;
						break;
					}
				}
				
				if(_reach) {
					var  p0 = anc.getHead();
					var p0t = bne.getHead();
					var _px = _x + p0t.x * _s;
					var _py = _y + p0t.y * _s;
					draw_line_dashed(_px, _py, p1x, p1y, 2, 8);
					draw_sprite_ui(THEME.preview_bone_IK, 1, _px, _py, 1, 1, 0, COLORS._main_accent, 1);
					
					if(mouse_release(mb_left)) {
						var _len = point_distance(p0.x, p0.y, p1.x, p1.y);
						var _ang = point_direction(p0.x, p0.y, p1.x, p1.y);
						
						recordAction(ACTION_TYPE.struct_modify, bones, bones.serialize());
						
						var IKbone = new __Bone(anc, _len, _ang, ik_dragging.angle + 90, 0, self);
						anc.addChild(IKbone);
						
						IKbone.direction  = _ang;
						IKbone.distance   = _len;
						IKbone.IKlength   = _blen;
						IKbone.IKTargetID = ik_dragging.ID;
						
						IKbone.name = "IK handle";
						IKbone.parent_anchor = false;
						
						bones.setPosition();
					}
				}
				
				draw_sprite_ui(THEME.preview_bone_IK, 0, p1x, p1y, 1, 1, 0, _reach? COLORS._main_value_positive : COLORS._main_accent, 1);
				
			} else
				draw_sprite_ui(THEME.preview_bone_IK, 0, p1x, p1y, 1, 1, 0, COLORS._main_accent, 0.5);
			
			if(mouse_release(mb_left)) {
				ik_dragging  = noone;
				UNDO_HOLDING = false;
				bones.setPosition();
			}
			
			triggerRender();
		
		} 
		
		if(isUsingTool("Transform")) { 
			_b.draw(attributes, false, _x, _y, _s, _mx, _my);
			
			var bbox = _b.bbox();
			if(!is_array(bbox)) return;
			
			var x0 = _x + bbox[0] * _s;
			var y0 = _y + bbox[1] * _s;
			
			var x1 = _x + bbox[2] * _s;
			var y1 = _y + bbox[3] * _s;
			
			if(bone_transform_type >= 0) {
				var dx = mx - builder_mx;
				var dy = my - builder_my;
				
				var ox0 = bone_transform_bbox[0], oy0 = bone_transform_bbox[1];
				var ox1 = bone_transform_bbox[2], oy1 = bone_transform_bbox[3];
				var ow  = ox1 - ox0;
				var oh  = oy1 - oy0;
				
				var nx0 = ox0, ny0 = oy0;
				var nx1 = ox1, ny1 = oy1;
				
				switch(bone_transform_type) { // transform
					case 0 :
						nx0 = ox0 + dx;
						ny0 = oy0 + dy;
						break;
					
					case 1 :
						nx1 = ox1 + dx;
						ny0 = oy0 + dy;
						break;
						
					case 2 :
						nx0 = ox0 + dx;
						ny1 = oy1 + dy;
						break;
						
					case 3 :
						nx1 = ox1 + dx;
						ny1 = oy1 + dy;
						break;
					
					case 4 :
						nx0 = ox0 + dx;
						ny0 = oy0 + dy;
						nx1 = ox1 + dx;
						ny1 = oy1 + dy;
						break;
				}
				
				var nw  = nx1 - nx0;
				var nh  = ny1 - ny0;
				
				for( var i = 0, n = array_length(bone_point_maps); i < n; i++ ) {
					var _bmap = bone_point_maps[i];
					var _emap = bone_point_mape[i];
					
					_emap[0].x = (_bmap[0].x - ox0) / ow * nw + nx0;
					_emap[0].y = (_bmap[0].y - oy0) / oh * nh + ny0;
					
					_emap[1].x = (_bmap[1].x - ox0) / ow * nw + nx0;
					_emap[1].y = (_bmap[1].y - oy0) / oh * nh + ny0;
				}
				
				for( var i = 0, n = array_length(bone_arr); i < n; i++ ) {
					var _bone = bone_arr[i];
					var _emap = bone_point_mape[i];
					
					var _h = _emap[0];
					var _t = _emap[1];
					
					if(!_bone.parent_anchor) {
						var _ox = 0;
						var _oy = 0;
						
						if(_bone.parent) {
							var _ph = _bone.parent.getHead();
							_ox = _ph.x;
							_oy = _ph.y;
						}
						
						_bone.distance  = point_distance(  _ox, _oy, _h.x, _h.y );
						_bone.direction = point_direction( _ox, _oy, _h.x, _h.y );
					}
					
					_bone.length    = point_distance(_h.x, _h.y, _t.x, _t.y);
					_bone.angle     = point_direction(_h.x, _h.y, _t.x, _t.y);
					
					_bone.__setPosition();
				}
				
				if(mouse_release(mb_left)) {
					bone_transform_type = -1;
					UNDO_HOLDING   = false;
				}
				
				triggerRender();
				
				draw_set_color(COLORS._main_accent);
				draw_rectangle(x0, y0, x1, y1, true);
				
			} else {
				var _hov_type = -1;
				var _r = 8;
				
					 if(point_in_circle(_mx, _my, x0, y0, _r + 2))    _hov_type = 0;
				else if(point_in_circle(_mx, _my, x1, y0, _r + 2))    _hov_type = 1;
				else if(point_in_circle(_mx, _my, x0, y1, _r + 2))    _hov_type = 2;
				else if(point_in_circle(_mx, _my, x1, y1, _r + 2))    _hov_type = 3;
				else if(point_in_rectangle(_mx, _my, x0, y0, x1, y1)) _hov_type = 4;
				
				draw_set_color(_hov_type == 4? COLORS._main_accent : c_white);
				draw_set_alpha(0.5);
				draw_rectangle(x0, y0, x1, y1, true);
				draw_set_alpha(1);
				
				draw_anchor(_hov_type == 0, x0, y0, _r);
				draw_anchor(_hov_type == 1, x1, y0, _r);
				draw_anchor(_hov_type == 2, x0, y1, _r);
				draw_anchor(_hov_type == 3, x1, y1, _r);
				
				if(_hov_type >= -1 && mouse_press(mb_left, active)) {
					bone_arr = _b.toArray();
					for( var i = 0, n = array_length(bone_arr); i < n; i++ ) {
						var _h = bone_arr[i].getHead(); 
						var _t = bone_arr[i].getTail();
						
						bone_point_maps[i] = [ _h, _t ];
						bone_point_mape[i] = [ _h.clone(), _t.clone() ];
					}
					
					bone_transform_type = _hov_type;
					bone_transform_bbox = _b.bbox(); 
					builder_mx = mx;
					builder_my = my;
					
					recordAction(ACTION_TYPE.struct_modify, bones, bones.serialize());
				}
			}
		
		} else if(isUsingTool("Add bones")) {  // builder
			if(builder_bone == noone) {
				anchor_selecting = _b.draw(attributes, active * 0b111, _x, _y, _s, _mx, _my, anchor_selecting);
				_b.drawControl(attributes);
			}
			
			if(mouse_press(mb_left, active)) {
				
				if(anchor_selecting == noone) {
					builder_bone = createBone(bones, point_distance(0, 0, smx, smy), point_direction(0, 0, smx, smy));
					builder_type = 1;
					
					builder_sx   = smx;
					builder_sy   = smy;
					UNDO_HOLDING = true;
					bones.setPosition();
					
				} else if(anchor_selecting[1] == 1) {
					builder_bone = createBone(anchor_selecting[0], 0, 0);
					builder_type = 1;
					
					builder_sx   = smx;
					builder_sy   = smy;
					UNDO_HOLDING = true;
					bones.setPosition();
					
				} else if(anchor_selecting[1] == 2) {
					var _pr = anchor_selecting[0];
					recordAction(ACTION_TYPE.struct_modify, bones, bones.serialize());
					
					var _md = new __Bone(noone, 0, 0, _pr.angle, _pr.length / 2, self);
					_pr.length = _md.length;
					
					for( var i = 0, n = array_length(_pr.childs); i < n; i++ )
						_md.addChild(_pr.childs[i]);
					
					_pr.childs = [];
					_pr.addChild(_md);
					
					UNDO_HOLDING = true;
					triggerRender();
				}
			}
			
			if(anchor_selecting == noone)
				draw_sprite_ext(THEME.bone_tool_add, 1, _mx + 16, _my + 16, 1, 1, 0, c_white, 1);
				
			else if(anchor_selecting[1] == 1) {
				draw_sprite_ext(THEME.bone_tool_add, 0, _mx + 24, _my + 24, 1, 1, 0, c_white, 1);
				draw_sprite_ext(THEME.bone_tool_add, 1, _mx + 24, _my + 24, 1, 1, 0, c_white, 1);
				
			} else if(anchor_selecting[1] == 2)
				draw_sprite_ext(THEME.bone_tool_add, 0, _mx + 24, _my + 24, 1, 1, 0, c_white, 1);
		
		} else if(isUsingTool("Remove bones")) { //remover
			anchor_selecting = _b.draw(attributes, active * 0b100, _x, _y, _s, _mx, _my, anchor_selecting);
			
			if(anchor_selecting != noone && anchor_selecting[1] == 2 && anchor_selecting[0].parent != noone && mouse_press(mb_left, active)) {
				var _bone = anchor_selecting[0];
				var _par  = _bone.parent;
				
				array_remove(_par.childs, _bone);
				
				for( var i = 0, n = array_length(_bone.childs); i < n; i++ ) {
					var _ch = _bone.childs[i];
					_par.addChild(_ch);
						
					_ch.parent_anchor = _bone.parent_anchor;
				}
					
				triggerRender();
			}
			
			if(anchor_selecting != noone)
				draw_sprite_ext(THEME.bone_tool_remove, 1, _mx + 24, _my + 24, 1, 1, 0, c_white, 1);
		
		} else if(isUsingTool("Detach bones")) { //detach
			if(builder_bone == noone)
				anchor_selecting = _b.draw(attributes, active * 0b100, _x, _y, _s, _mx, _my, anchor_selecting);
			
			if(anchor_selecting != noone && anchor_selecting[1] == 2 && mouse_press(mb_left, active)) {
				var detach_bone = anchor_selecting[0];
				
				var par = detach_bone.parent;
				if(detach_bone.parent_anchor) {
					detach_bone.distance  = par.length;
					detach_bone.direction = par.angle;
				}
				detach_bone.parent_anchor = false;
				
				builder_bone = detach_bone;
				builder_type = 0;
				
				var head = par.getHead();
				builder_sx   = head.x;
				builder_sy   = head.y;
				builder_mx   = mx;
				builder_my   = my;
				UNDO_HOLDING = true;
			}
		
		} else if(isUsingTool("IK")) {  //IK
			if(ik_dragging == noone)
				anchor_selecting = _b.draw(attributes, active * 0b100, _x, _y, _s, _mx, _my, anchor_selecting);
			
			if(anchor_selecting != noone && anchor_selecting[1] == 2 && mouse_press(mb_left, active))
				ik_dragging = anchor_selecting[0];
			
		} else if(isUsingTool("Mirror bones")) {
			if(builder_bone == noone)
				anchor_selecting = _b.draw(attributes, active * 0b111, _x, _y, _s, _mx, _my, anchor_selecting);
			
			if(mirroring_bone != noone) {
				var _maxis = anchor_selecting == noone || anchor_selecting[0] == mirroring_bone? mirroring_bone.parent.angle : anchor_selecting[0].angle;
				var _ori   = mirroring_bone.getHead();
				
				var _ox = _x + _ori.x * _s;
				var _oy = _y + _ori.y * _s;
				
				var _x0 = _ox + lengthdir_x(64, _maxis);
				var _y0 = _oy + lengthdir_y(64, _maxis);
				var _x1 = _ox - lengthdir_x(64, _maxis);
				var _y1 = _oy - lengthdir_y(64, _maxis);
				
				BLEND_ADD
				draw_set_color(COLORS._main_accent);
				draw_line_dashed(_x0, _y0, _x1, _y1, 3);
				BLEND_NORMAL
				
				if(mouse_release(mb_left)) {
					var _mirrored = mirroring_bone.clone();
					var _mirArr   = _mirrored.toArray();
					
					for( var i = 0, n = array_length(_mirArr); i < n; i++ ) {
						var _bm = _mirArr[i];
					    _bm.ID  = UUID_generate();
						
							 if(string_pos(" L", _bm.name)) _bm.name = string_replace(_bm.name, " L", " R");
						else if(string_pos(" R", _bm.name)) _bm.name = string_replace(_bm.name, " R", " L");
						
						_bm.angle = _maxis + angle_difference(_maxis, _bm.angle);
					}
					
					mirroring_bone.parent.addChild(_mirrored);
					mirroring_bone = noone;
					
					triggerRender();
				}
				
			} else if(anchor_selecting != noone) {
				var _bne = anchor_selecting[0];
				var _typ = anchor_selecting[1];
				
				if(_bne.parent && mouse_press(mb_left, active))
					mirroring_bone = _bne;
			}
			
		} else {  // move tools
			if(builder_bone == noone) {
				anchor_selecting = _b.draw(attributes, active * 0b111, _x, _y, _s, _mx, _my, anchor_selecting);
				_b.drawControl(attributes);
			}
			
			if(anchor_selecting != noone) {
				var _bne = anchor_selecting[0];
				var _typ = anchor_selecting[1];
				
				if(_bne.IKlength) _typ = 0;
				
				gpu_set_texfilter(true);
				
				if(_typ == 0) { // free move
					var orig = _bne.getHead();
					draw_sprite_ext(s_bone_move, 0, _x + _s * orig.x, _y + _s * orig.y, 1, 1, 0, COLORS._main_accent, 1);
					
				} else if(_typ == 1) { // bone move
					var orig = _bne.getTail();
					draw_sprite_ext(s_bone_move, 0, _x + _s * orig.x, _y + _s * orig.y, 1, 1, 0, COLORS._main_accent, 1);
					
				} else if(_typ == 2) { // bone rotate
					var orig = _bne.getHead();
					var _rx = _x + _s * orig.x;
					var _ry = _y + _s * orig.y;
					
					var orig = _bne.getPoint(0.8);
					var _sx = _x + _s * orig.x;
					var _sy = _y + _s * orig.y;
					
					if(point_in_circle(_mx, _my, _sx, _sy, 12)) {
						draw_sprite_ext(s_bone_scale,  0, _sx, _sy, 1, 1, _bne.angle, COLORS._main_accent, 1);
						draw_sprite_ext(s_bone_rotate, 0, _rx, _ry, 1, 1, _bne.angle, c_white, 1);
						_typ = 3;
						
					} else {
						draw_sprite_ext(s_bone_scale,  0, _sx, _sy, 1, 1, _bne.angle, c_white, 1);
						draw_sprite_ext(s_bone_rotate, 0, _rx, _ry, 1, 1, _bne.angle, COLORS._main_accent, 1);
						_typ = 2;
					}
				}
				
				gpu_set_texfilter(false);
				
				if(mouse_press(mb_left, active)) {
					builder_bone = _bne;
					builder_type = _typ;
					
					recordAction(ACTION_TYPE.struct_modify, bones, bones.serialize());
					
					if(_typ == 0) {
						var orig = _bne.parent.getHead();
						builder_sx = orig.x;
						builder_sy = orig.y;
						
					} else if(_typ == 1) {
						var orig = _bne.getHead();
						builder_sx = orig.x;
						builder_sy = orig.y;
						
					} else if(_typ == 2) {
						var orig = _bne.getHead();
						builder_sv = point_direction(orig.x, orig.y, mx, my);
						builder_sx = orig.x;
						builder_sy = orig.y;
						builder_mx = mx;
						builder_my = my;
						
					} else if(_typ == 3) {
						var orig = _bne.getHead();
						builder_sv = point_distance(orig.x, orig.y, mx, my) / _bne.length;
						builder_sx = orig.x;
						builder_sy = orig.y;
					} 
					
					UNDO_HOLDING = true;
				}
			}
		}
	} 
	
	static step = function() {}
	
	static update = function(frame = CURRENT_FRAME) { 
		bones.resetPose()
		     .setPosition();
		bone_bbox = bones.bbox();
		
		outputs[0].setValue(bones);
	} 
	
	static getPreviewBoundingBox = function() { 
		var minx =  9999999;
		var miny =  9999999;
		var maxx = -9999999;
		var maxy = -9999999;
		
		var _b = bones;
		var _bst = ds_stack_create();
		ds_stack_push(_bst, _b);
		
		while(!ds_stack_empty(_bst)) {
			var __b = ds_stack_pop(_bst);
			
			for( var i = 0, n = array_length(__b.childs); i < n; i++ ) {
				var p0 = __b.childs[i].getHead();
				var p1 = __b.childs[i].getTail();
				
				minx = min(minx, p0.x); miny = min(miny, p0.y);
				maxx = max(maxx, p0.x); maxy = max(maxy, p0.y);
				
				minx = min(minx, p1.x); miny = min(miny, p1.y);
				maxx = max(maxx, p1.x); maxy = max(maxy, p1.y);
				
				ds_stack_push(_bst, __b.childs[i]);
			}
		}
		
		ds_stack_destroy(_bst);
		
		if(minx == 9999999) return noone;
		return BBOX().fromPoints(minx, miny, maxx, maxy);
	} 
	
	static doSerialize = function(_map) { 
		_map.bones = bones.serialize();
	} 
	
	static postDeserialize = function() { 
		if(struct_has(attributes, "bones")) struct_remove(attributes, "bones");
		if(!struct_has(load_map, "bones")) return;
		
		bones = new __Bone(,,,,, self);
		bones.deserialize(load_map.bones, self);
		bones.connect();
	} 
	
	static onDrawNode = function(xx, yy, _mx, _my, _s, _hover, _focus) { 
		var bbox = drawGetBbox(xx, yy, _s);
		
		var _ss = _s * .5;
		gpu_set_tex_filter(1);
		draw_sprite_ext(s_node_armature_create, 0, bbox.x0 + 24 * _ss, bbox.y1 - 24 * _ss, _ss, _ss, 0, c_white, 0.5);
		gpu_set_tex_filter(0);
		
		bones.drawThumbnail(_s, bbox, bone_bbox);
	} 
}