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When a custom brush is selected, it now appears as an indicator at the cursor

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Also moved blend_image_with_color() to Global and the custom brush image (resized & blended accordingly with the selected color and interpolation factor) is now updated every time something changes (size, color etc) and not every time you draw. This is not true for the eraser, however, as it must be blended with Color(0, 0, 0, 0)
This commit is contained in:
OverloadedOrama 2019-09-27 20:05:24 +03:00
parent 086b4f1423
commit 7ff823f3a5
6 changed files with 159 additions and 96 deletions
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47
Scripts/Global.gd
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@ -82,6 +82,14 @@ var custom_brushes := []
var custom_left_brush_index := -1
# warning-ignore:unused_class_variable
var custom_right_brush_index := -1
# warning-ignore:unused_class_variable
var custom_left_brush_image : Image
# warning-ignore:unused_class_variable
var custom_right_brush_image : Image
# warning-ignore:unused_class_variable
var custom_left_brush_texture := ImageTexture.new()
# warning-ignore:unused_class_variable
var custom_right_brush_texture := ImageTexture.new()
func _ready() -> void:
@ -168,10 +176,43 @@ func set_current_frame_label(value) -> void:
func create_brush_button(brush_img : Image) -> void:
var brush_button = load("res://Prefabs/BrushButton.tscn").instance()
brush_button.brush_type = Global.BRUSH_TYPES.CUSTOM
brush_button.custom_brush_index = Global.custom_brushes.size() - 1
brush_button.brush_type = BRUSH_TYPES.CUSTOM
brush_button.custom_brush_index = custom_brushes.size() - 1
var brush_tex := ImageTexture.new()
brush_tex.create_from_image(brush_img, 0)
brush_button.get_child(0).texture = brush_tex
var hbox_container := find_node_by_name(get_tree().get_root(), "BrushHBoxContainer")
hbox_container.add_child(brush_button)
hbox_container.add_child(brush_button)
func update_left_custom_brush() -> void:
var custom_brush := Image.new()
custom_brush.copy_from(custom_brushes[custom_left_brush_index])
var custom_brush_size = custom_brush.get_size()
custom_brush.resize(custom_brush_size.x * left_brush_size, custom_brush_size.y * left_brush_size, Image.INTERPOLATE_NEAREST)
custom_left_brush_image = blend_image_with_color(custom_brush, left_color_picker.color, left_interpolate_slider.value)
custom_left_brush_texture.create_from_image(custom_left_brush_image, 0)
func update_right_custom_brush() -> void:
var custom_brush := Image.new()
custom_brush.copy_from(custom_brushes[custom_right_brush_index])
var custom_brush_size = custom_brush.get_size()
custom_brush.resize(custom_brush_size.x * right_brush_size, custom_brush_size.y * right_brush_size, Image.INTERPOLATE_NEAREST)
custom_right_brush_image = blend_image_with_color(custom_brush, right_color_picker.color, right_interpolate_slider.value)
custom_right_brush_texture.create_from_image(custom_right_brush_image, 0)
func blend_image_with_color(image : Image, color : Color, interpolate_factor : float) -> Image:
var blended_image := Image.new()
blended_image.copy_from(image)
var size := image.get_size()
blended_image.lock()
for xx in size.x:
for yy in size.y:
if color.a > 0: #If it's the pencil
var current_color := blended_image.get_pixel(xx, yy)
if current_color.a > 0:
#var blended_color = current_color.blend(color)
var new_color := current_color.linear_interpolate(color, interpolate_factor)
blended_image.set_pixel(xx, yy, new_color)
else: #If color is transparent - if it's the eraser
blended_image.set_pixel(xx, yy, Color(0, 0, 0, 0))
return blended_image