material-maker/addons/procedural_material/paint_tool/paint.gd

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GDScript3
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tool
extends ViewportContainer
const MODE_FREE = 0
const MODE_LINE = 1
const MODE_LINE_STRIP = 2
var mode = MODE_FREE
var brush_size = 50.0
var brush_strength = 0.5
var texture_albedo = null
var texture_mr = null
var texture_normal = null
var texture_scale = 2.0
var previous_position = null
var painting = false
var next_paint_to = null
var object_name = null
onready var albedo_viewport = $AlbedoPaint/Viewport
onready var mr_viewport = $MRPaint/Viewport
onready var normal_viewport = $NormalPaint/Viewport
onready var albedo_material = $AlbedoPaint/Viewport/ColorRect.get_material()
onready var mr_material = $MRPaint/Viewport/ColorRect.get_material()
onready var normal_material = $NormalPaint/Viewport/ColorRect.get_material()
onready var brush_material = $Brush.get_material()
const MATERIAL_OPTIONS = [ "none", "bricks", "metal_pattern", "rusted_metal", "wooden_floor" ]
signal update_material
func _ready():
# add View2Texture as input of Texture2View (to ignore non-visible parts of the mesh)
$Texture2View/Viewport/PaintedMesh.get_surface_material(0).set_shader_param("view2texture", $View2Texture/Viewport.get_texture())
# Add Texture2View as input to all painted textures
$FixSeams/Viewport.get_texture().flags |= Texture.FLAG_FILTER
albedo_material.set_shader_param("tex2view_tex", $FixSeams/Viewport.get_texture())
mr_material.set_shader_param("tex2view_tex", $FixSeams/Viewport.get_texture())
normal_material.set_shader_param("tex2view_tex", $FixSeams/Viewport.get_texture())
# Add all painted textures as input to themselves
albedo_material.set_shader_param("self_tex", albedo_viewport.get_texture())
mr_material.set_shader_param("self_tex", mr_viewport.get_texture())
normal_material.set_shader_param("self_tex", normal_viewport.get_texture())
# Assign all textures to painted mesh
albedo_viewport.get_texture().flags |= Texture.FLAG_FILTER
$Viewport/PaintedMesh.get_surface_material(0).albedo_texture = albedo_viewport.get_texture()
mr_viewport.get_texture().flags |= Texture.FLAG_FILTER
$Viewport/PaintedMesh.get_surface_material(0).metallic_texture = mr_viewport.get_texture()
$Viewport/PaintedMesh.get_surface_material(0).roughness_texture = mr_viewport.get_texture()
normal_viewport.get_texture().flags |= Texture.FLAG_FILTER
$Viewport/PaintedMesh.get_surface_material(0).normal_texture = normal_viewport.get_texture()
# Updated Texture2View wrt current camera position
update_tex2view()
# Set size of painted textures
set_texture_size(2048)
# update the material list
$Material/OptionButton.clear()
for m in MATERIAL_OPTIONS:
$Material/OptionButton.add_item(m)
select_material(0)
# Initialize brush related parameters in paint shaders
update_brush_parameters()
func set_mesh(n, m):
object_name = n
var mat
mat = $Viewport/PaintedMesh.get_surface_material(0)
$Viewport/PaintedMesh.mesh = m
$Viewport/PaintedMesh.set_surface_material(0, mat)
mat = $Texture2View/Viewport/PaintedMesh.get_surface_material(0)
$Texture2View/Viewport/PaintedMesh.mesh = m
$Texture2View/Viewport/PaintedMesh.set_surface_material(0, mat)
mat = $View2Texture/Viewport/PaintedMesh.get_surface_material(0)
$View2Texture/Viewport/PaintedMesh.mesh = m
$View2Texture/Viewport/PaintedMesh.set_surface_material(0, mat)
update_tex2view()
save()
func set_mode(m):
mode = m
for i in $Tools.get_child_count():
$Tools.get_child(i).pressed = (i == m)
func set_texture_size(s):
$Texture2View/Viewport.size = Vector2(s, s)
$FixSeams/Viewport.size = Vector2(s, s)
$FixSeams/Viewport/TextureRect1.rect_size = Vector2(s, s)
$FixSeams/Viewport/TextureRect2.rect_size = Vector2(s, s)
$FixSeams/Viewport/TextureRect3.rect_size = Vector2(s, s)
$FixSeams/Viewport/TextureRect4.rect_size = Vector2(s, s)
$FixSeams/Viewport/TextureRect5.rect_size = Vector2(s, s)
$AlbedoPaint/Viewport.size = Vector2(s, s)
$AlbedoPaint/Viewport/ColorRect.rect_size = Vector2(s, s)
$MRPaint/Viewport.size = Vector2(s, s)
$MRPaint/Viewport/ColorRect.rect_size = Vector2(s, s)
func _on_Test_gui_input(ev):
if ev is InputEventWithModifiers:
if ev.control:
$Texture.show()
else:
$Texture.hide()
if ev is InputEventMouseMotion:
show_brush(ev.position, previous_position)
if ev.button_mask & BUTTON_MASK_RIGHT != 0:
$Viewport/CameraStand.rotate_y(-0.01*ev.relative.x)
$Viewport/CameraStand.rotate_x(-0.01*ev.relative.y)
if ev.button_mask & BUTTON_MASK_LEFT != 0:
if ev.control:
previous_position = null
texture_scale += ev.relative.x*0.1
texture_scale = clamp(texture_scale, 0.01, 20.0)
elif ev.shift:
previous_position = null
brush_size += ev.relative.x*0.1
brush_size = clamp(brush_size, 0.0, 250.0)
brush_strength += ev.relative.y*0.01
brush_strength = clamp(brush_strength, 0.0, 0.999)
update_brush_parameters()
elif mode == MODE_FREE:
paint(ev.position)
elif mode != MODE_LINE_STRIP:
previous_position = null
elif ev is InputEventMouseButton and !ev.shift:
var pos = ev.position
if ev.pressed:
var zoom = 0.0
if ev.button_index == BUTTON_WHEEL_UP:
zoom += 0.1
$Viewport/CameraStand/Camera.translate(Vector3(0.0, 0.0, zoom))
update_tex2view()
elif ev.button_index == BUTTON_WHEEL_DOWN:
zoom -= 0.1
$Viewport/CameraStand/Camera.translate(Vector3(0.0, 0.0, zoom))
update_tex2view()
elif ev.button_index == BUTTON_LEFT:
if mode == MODE_LINE_STRIP && previous_position != null:
paint(pos)
if ev.doubleclick:
pos = null
previous_position = pos
else:
if ev.button_index == BUTTON_RIGHT:
update_tex2view()
elif ev.button_index == BUTTON_LEFT:
if mode != MODE_LINE_STRIP:
paint(pos)
previous_position = null
func show_brush(p, op = null):
if op == null:
op = p
var position = p/rect_size
var old_position = op/rect_size
brush_material.set_shader_param("brush_pos", position)
brush_material.set_shader_param("brush_ppos", old_position)
func update_brush_parameters():
var brush_size_vector = Vector2(brush_size, brush_size)/rect_size
if brush_material != null:
brush_material.set_shader_param("brush_size", Vector2(brush_size, brush_size)/rect_size)
brush_material.set_shader_param("brush_strength", brush_strength)
if albedo_material != null:
albedo_material.set_shader_param("brush_size", brush_size_vector)
albedo_material.set_shader_param("brush_strength", brush_strength)
if mr_material != null:
mr_material.set_shader_param("brush_size", brush_size_vector)
mr_material.set_shader_param("brush_strength", brush_strength)
if normal_material != null:
normal_material.set_shader_param("brush_size", brush_size_vector)
normal_material.set_shader_param("brush_strength", brush_strength)
func paint(p):
if painting:
# if not available for painting, record a paint order
next_paint_to = p
return
painting = true
if previous_position == null:
previous_position = p
var position = p/rect_size
var prev_position = previous_position/rect_size
albedo_material.set_shader_param("brush_pos", position)
albedo_material.set_shader_param("brush_ppos", prev_position)
albedo_material.set_shader_param("brush_color", $Material/AlbedoColor.color)
albedo_viewport.render_target_update_mode = Viewport.UPDATE_ONCE
albedo_viewport.update_worlds()
mr_material.set_shader_param("brush_pos", position)
mr_material.set_shader_param("brush_ppos", prev_position)
mr_material.set_shader_param("brush_color", $Material/MRColor.color)
mr_viewport.render_target_update_mode = Viewport.UPDATE_ONCE
mr_viewport.update_worlds()
normal_material.set_shader_param("brush_pos", position)
normal_material.set_shader_param("brush_ppos", prev_position)
normal_viewport.render_target_update_mode = Viewport.UPDATE_ONCE
normal_viewport.update_worlds()
previous_position = p
yield(get_tree(), "idle_frame")
yield(get_tree(), "idle_frame")
painting = false
# execute recorded paint order if any
if next_paint_to != null:
p = next_paint_to
next_paint_to = null
paint(p)
func update_tex2view():
var camera = $Viewport/CameraStand/Camera
var transform = camera.global_transform.affine_inverse()*$Viewport/PaintedMesh.global_transform
# View to texture
$View2Texture/Viewport.size = $Viewport.size
$View2Texture/Viewport/Camera.transform = camera.global_transform
$View2Texture/Viewport.render_target_update_mode = Viewport.UPDATE_ALWAYS
$View2Texture/Viewport.update_worlds()
yield(get_tree(), "idle_frame")
yield(get_tree(), "idle_frame")
yield(get_tree(), "idle_frame")
var t2v_shader_material = $Texture2View/Viewport/PaintedMesh.get_surface_material(0)
t2v_shader_material.set_shader_param("model_transform", transform)
t2v_shader_material.set_shader_param("fovy_degrees", camera.fov)
t2v_shader_material.set_shader_param("z_near", camera.near)
t2v_shader_material.set_shader_param("z_far", camera.far)
t2v_shader_material.set_shader_param("aspect", rect_size.x/rect_size.y)
$Texture2View/Viewport.render_target_update_mode = Viewport.UPDATE_ALWAYS
$Texture2View/Viewport.update_worlds()
yield(get_tree(), "idle_frame")
yield(get_tree(), "idle_frame")
yield(get_tree(), "idle_frame")
$Texture2View/Viewport.render_target_update_mode = Viewport.UPDATE_DISABLED
$FixSeams/Viewport.render_target_update_mode = Viewport.UPDATE_ALWAYS
$FixSeams/Viewport.update_worlds()
yield(get_tree(), "idle_frame")
yield(get_tree(), "idle_frame")
yield(get_tree(), "idle_frame")
$FixSeams/Viewport.render_target_update_mode = Viewport.UPDATE_DISABLED
func load_material():
var dialog = FileDialog.new()
add_child(dialog)
dialog.rect_min_size = Vector2(500, 500)
dialog.access = FileDialog.ACCESS_FILESYSTEM
dialog.mode = FileDialog.MODE_OPEN_FILE
dialog.add_filter("*.paintmat;Paint material")
dialog.connect("file_selected", self, "do_load_material")
dialog.popup_centered()
func do_load_material(filename):
pass
func select_material(id):
var m = $Material/OptionButton.get_item_text(id)
if m == "none":
texture_albedo = null
texture_mr = null
texture_normal = null
else:
texture_albedo = load("res://addons/procedural_material/paint_tool/materials/%s_albedo.png" % m)
texture_mr = load("res://addons/procedural_material/paint_tool/materials/%s_mr.png" % m)
texture_normal = load("res://addons/procedural_material/paint_tool/materials/%s_normal_map.png" % m)
albedo_material.set_shader_param("brush_texture", texture_albedo)
mr_material.set_shader_param("brush_texture", texture_mr)
normal_material.set_shader_param("brush_texture", texture_normal)
func _on_resized():
update_brush_parameters()
func dump_viewport(viewport, filename):
var viewport_texture = viewport.get_texture()
var viewport_image = viewport_texture.get_data()
viewport_image.save_png(filename)
func debug():
dump_viewport($View2Texture/Viewport, "view2texture.png")
dump_viewport($Texture2View/Viewport, "texture2view.png")
dump_viewport($FixSeams/Viewport, "seamsfixed.png")
func save():
var mat = $Viewport/PaintedMesh.get_surface_material(0).duplicate()
dump_viewport($AlbedoPaint/Viewport, object_name+"_albedo.png")
dump_viewport($MRPaint/Viewport, object_name+"_mr.png")
dump_viewport($NormalPaint/Viewport, object_name+"_nm.png")
emit_signal("update_material", { material=mat, albedo=object_name+"_albedo.png", mr=object_name+"_mr.png", nm=object_name+"_nm.png" })