pandemonium_engine/modules/paint/actions/Cut.gd

83 lines
2.0 KiB
GDScript

extends GEAction
class_name GECut
const selection_color = Color(0.8, 0.8, 0.8, 0.5)
var mouse_start_pos = null
var mouse_end_pos = null
func can_commit() -> bool:
return false #ugly way of handling a cut
func do_action(canvas, data: Array):
.do_action(canvas, data)
if mouse_start_pos == null:
mouse_start_pos = data[0]
mouse_end_pos = data[0]
action_data.preview.cells.clear()
action_data.preview.colors.clear()
canvas.clear_preview_layer()
var p = mouse_start_pos
var s = mouse_end_pos - mouse_start_pos
var pixels = GEUtils.get_pixels_in_line(p, p + Vector2(s.x, 0))
pixels += GEUtils.get_pixels_in_line(p, p + Vector2(0, s.y))
pixels += GEUtils.get_pixels_in_line(p + s, p + s + Vector2(0, -s.y))
pixels += GEUtils.get_pixels_in_line(p + s, p + s + Vector2(-s.x, 0))
for pixel in pixels:
canvas.set_preview_pixel_v(pixel, selection_color)
action_data.preview.cells.append(pixel)
action_data.preview.colors.append(selection_color)
func commit_action(canvas):
canvas.clear_preview_layer()
var p = mouse_start_pos
var s = mouse_end_pos - mouse_start_pos
for x in range(abs(s.x)+1):
for y in range(abs(s.y)+1):
var px = x
var py = y
if s.x < 0:
px *= -1
if s.y < 0:
py *= -1
var pos = p + Vector2(px, py)
var color = canvas.get_pixel(pos.x, pos.y)
if color == null or color.a == 0.0:
continue
action_data.redo.cells.append(pos)
action_data.redo.colors.append(canvas.get_pixel_v(pos))
canvas.set_pixel_v(pos, Color.transparent)
action_data.undo.cells.append(pos)
action_data.undo.colors.append(Color.transparent)
return []
func undo_action(canvas):
var cells = action_data.undo.cells
var colors = action_data.undo.colors
for idx in range(cells.size()):
canvas._set_pixel_v(action_data.layer, cells[idx], colors[idx])
func redo_action(canvas):
var cells = action_data.redo.cells
var colors = action_data.redo.colors
for idx in range(cells.size()):
canvas._set_pixel_v(action_data.layer, cells[idx], colors[idx])