quack/addons/cyclops_level_builder/tools/tool_edit_edge.gd

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2023-05-23 21:27:34 +00:00
# MIT License
#
# Copyright (c) 2023 Mark McKay
# https://github.com/blackears/cyclopsLevelBuilder
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
@tool
extends ToolEditBase
class_name ToolEditEdge
const TOOL_ID:String = "edit_edge"
var handles:Array[HandleEdge] = []
enum ToolState { NONE, READY, DRAGGING }
var tool_state:ToolState = ToolState.NONE
var drag_handle:HandleEdge
var drag_mouse_start_pos:Vector2
var drag_handle_start_pos:Vector3
var tracked_blocks_root:CyclopsBlocks
var cmd_move_edge:CommandMoveEdges
class PickHandleResult extends RefCounted:
var handle:HandleEdge
var position:Vector3
func _get_tool_id()->String:
return TOOL_ID
func _draw_tool(viewport_camera:Camera3D):
var global_scene:CyclopsGlobalScene = builder.get_global_scene()
global_scene.clear_tool_mesh()
#var blocks_root:CyclopsBlocks = builder.active_node
for h in handles:
var block:CyclopsConvexBlock = builder.get_node(h.block_path)
var e:ConvexVolume.EdgeInfo = block.control_mesh.edges[h.edge_index]
var p0:Vector3 = block.control_mesh.vertices[e.start_index].point
var p1:Vector3 = block.control_mesh.vertices[e.end_index].point
var active:bool = block.control_mesh.active_edge == h.edge_index
global_scene.draw_vertex((p0 + p1) / 2, pick_material(global_scene, e.selected, active))
global_scene.draw_line(p0, p1, pick_material(global_scene, e.selected, active))
func setup_tool():
handles = []
var blocks_root:CyclopsBlocks = builder.active_node
if blocks_root == null:
return
for child in blocks_root.get_children():
if child is CyclopsConvexBlock:
var block:CyclopsConvexBlock = child
if block.selected:
for e_idx in block.control_mesh.edges.size():
var ctl_mesh:ConvexVolume = block.control_mesh
var e:ConvexVolume.EdgeInfo = ctl_mesh.edges[e_idx]
var handle:HandleEdge = HandleEdge.new()
handle.p_ref = ctl_mesh.vertices[e.start_index].point
handle.p_ref_init = handle.p_ref
# handle.p1 = ctl_mesh.vertices[e.end_index].point
# handle.p1_init = handle.p1
handle.edge_index = e_idx
handle.block_path = block.get_path()
handles.append(handle)
#print("adding handle %s" % handle)
func pick_closest_handle(blocks_root:CyclopsBlocks, viewport_camera:Camera3D, position:Vector2, radius:float)->PickHandleResult:
var best_dist:float = INF
var best_handle:HandleEdge = null
var best_pick_position:Vector3
var pick_origin:Vector3 = viewport_camera.project_ray_origin(position)
var pick_dir:Vector3 = viewport_camera.project_ray_normal(position)
for h in handles:
var block:CyclopsConvexBlock = builder.get_node(h.block_path)
var ctl_mesh:ConvexVolume = block.control_mesh
var edge:ConvexVolume.EdgeInfo = ctl_mesh.edges[h.edge_index]
var p0 = ctl_mesh.vertices[edge.start_index].point
var p1 = ctl_mesh.vertices[edge.end_index].point
var p0_world:Vector3 = blocks_root.global_transform * p0
var p1_world:Vector3 = blocks_root.global_transform * p1
var p0_screen:Vector2 = viewport_camera.unproject_position(p0_world)
var p1_screen:Vector2 = viewport_camera.unproject_position(p1_world)
var dist_to_seg_2d_sq = MathUtil.dist_to_segment_squared_2d(position, p0_screen, p1_screen)
if dist_to_seg_2d_sq > radius * radius:
#Failed handle radius test
continue
var point_on_seg:Vector3 = MathUtil.closest_point_on_segment(pick_origin, pick_dir, p0_world, p1_world)
var offset:Vector3 = point_on_seg - pick_origin
var parallel:Vector3 = offset.project(pick_dir)
var dist = parallel.dot(pick_dir)
if dist <= 0:
#Behind camera
continue
#print("h pos %s ray orig %s ray dir %s offset %s para %s dist %s perp %s" % [h.position, ray_origin, ray_dir, offset, parallel, dist, perp])
if dist >= best_dist:
continue
best_pick_position = point_on_seg
best_dist = dist
best_handle = h
if !best_handle:
return null
var result:PickHandleResult = PickHandleResult.new()
result.handle = best_handle
result.position = best_pick_position
return result
func active_node_changed():
if tracked_blocks_root != null:
tracked_blocks_root.blocks_changed.disconnect(active_node_updated)
tracked_blocks_root = null
setup_tool()
# draw_tool()
tracked_blocks_root = builder.active_node
if tracked_blocks_root:
tracked_blocks_root.blocks_changed.connect(active_node_updated)
func active_node_updated():
setup_tool()
# draw_tool()
func _activate(builder:CyclopsLevelBuilder):
super._activate(builder)
builder.mode = CyclopsLevelBuilder.Mode.EDIT
builder.edit_mode = CyclopsLevelBuilder.EditMode.EDGE
builder.active_node_changed.connect(active_node_changed)
tracked_blocks_root = builder.active_node
if tracked_blocks_root:
tracked_blocks_root.blocks_changed.connect(active_node_updated)
setup_tool()
# draw_tool()
func _deactivate():
super._deactivate()
builder.active_node_changed.disconnect(active_node_changed)
if tracked_blocks_root != null:
tracked_blocks_root.blocks_changed.disconnect(active_node_updated)
func _gui_input(viewport_camera:Camera3D, event:InputEvent)->bool:
if !builder.active_node is CyclopsBlocks:
return false
var gui_result = super._gui_input(viewport_camera, event)
if gui_result:
return true
var blocks_root:CyclopsBlocks = self.builder.active_node
var grid_step_size:float = pow(2, builder.get_global_scene().grid_size)
#var global_scene:CyclopsGlobalScene = builder.get_node("/root/CyclopsAutoload")
#_draw_tool(viewport_camera)
# if event is InputEventKey:
# return true
if event is InputEventMouseButton:
var e:InputEventMouseButton = event
if e.button_index == MOUSE_BUTTON_LEFT:
if e.is_pressed():
if tool_state == ToolState.NONE:
drag_mouse_start_pos = e.position
tool_state = ToolState.READY
return true
else:
# print("bn up: state %s" % tool_state)
if tool_state == ToolState.READY:
#print("cmd select")
var cmd:CommandSelectEdges = CommandSelectEdges.new()
cmd.builder = builder
for child in builder.active_node.get_children():
if child is CyclopsConvexBlock:
var cur_block:CyclopsConvexBlock = child
if cur_block.selected:
cmd.add_edges(cur_block.get_path(), [])
cmd.selection_type = Selection.choose_type(e.shift_pressed, e.ctrl_pressed)
var res:PickHandleResult = pick_closest_handle(blocks_root, viewport_camera, e.position, builder.handle_screen_radius)
if res:
var handle:HandleEdge = res.handle
# print("handle %s" % handle)
cmd.add_edge(handle.block_path, handle.edge_index)
#print("selectibg %s" % handle.vertex_index)
if cmd.will_change_anything():
var undo:EditorUndoRedoManager = builder.get_undo_redo()
cmd.add_to_undo_manager(undo)
tool_state = ToolState.NONE
# draw_tool()
elif tool_state == ToolState.DRAGGING:
#Finish drag
#print("cmd finish drag")
var undo:EditorUndoRedoManager = builder.get_undo_redo()
cmd_move_edge.add_to_undo_manager(undo)
tool_state = ToolState.NONE
#setup_tool()
elif event is InputEventMouseMotion:
var e:InputEventMouseMotion = event
if (e.button_mask & MOUSE_BUTTON_MASK_MIDDLE):
return false
if tool_state == ToolState.READY:
if e.position.distance_squared_to(drag_mouse_start_pos) > MathUtil.square(builder.drag_start_radius):
var res:PickHandleResult = pick_closest_handle(blocks_root, viewport_camera, drag_mouse_start_pos, builder.handle_screen_radius)
if res:
var handle:HandleEdge = res.handle
drag_handle = handle
# drag_handle_start_pos = handle.p_ref
drag_handle_start_pos = res.position
tool_state = ToolState.DRAGGING
cmd_move_edge = CommandMoveEdges.new()
cmd_move_edge.builder = builder
# cmd_move_vertex.block_path = handle.block_path
# cmd_move_vertex.vertex_position = handle.initial_position
var handle_block:CyclopsConvexBlock = builder.get_node(handle.block_path)
if handle_block.control_mesh.edges[handle.edge_index].selected:
for child in blocks_root.get_children():
if child is CyclopsConvexBlock:
var block:CyclopsConvexBlock = child
if block.selected:
var vol:ConvexVolume = block.control_mesh
for e_idx in vol.edges.size():
var edge:ConvexVolume.EdgeInfo = vol.edges[e_idx]
if edge.selected:
cmd_move_edge.add_edge(block.get_path(), e_idx)
else:
cmd_move_edge.add_edge(handle.block_path, handle.edge_index)
elif tool_state == ToolState.DRAGGING:
var origin:Vector3 = viewport_camera.project_ray_origin(e.position)
var dir:Vector3 = viewport_camera.project_ray_normal(e.position)
var start_pos:Vector3 = origin + builder.block_create_distance * dir
var w2l = blocks_root.global_transform.inverse()
var origin_local:Vector3 = w2l * origin
var dir_local:Vector3 = w2l.basis * dir
var drag_to:Vector3
if e.alt_pressed:
drag_to = MathUtil.closest_point_on_line(origin_local, dir_local, drag_handle_start_pos, Vector3.UP)
else:
drag_to = MathUtil.intersect_plane(origin_local, dir_local, drag_handle_start_pos, Vector3.UP)
var offset:Vector3 = drag_to - drag_handle_start_pos
offset = MathUtil.snap_to_grid(offset, grid_step_size)
drag_to = drag_handle_start_pos + offset
drag_handle.p_ref = drag_to
# drag_handle.p1 = drag_handle.p1_init + offset
cmd_move_edge.move_offset = offset
cmd_move_edge.do_it()
# draw_tool()
return true
return false