mirror of
https://github.com/Relintai/material-maker.git
synced 2024-12-23 21:16:54 +01:00
82 lines
2.7 KiB
GDScript
82 lines
2.7 KiB
GDScript
extends Control
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class_name MMNodeLink
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var end
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var source = null
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var target = null
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var generator = null
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var param_name : String = ""
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var creating : bool = false
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func _init(parent) -> void:
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size_flags_horizontal = SIZE_EXPAND_FILL
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size_flags_vertical = SIZE_EXPAND_FILL
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rect_size = parent.rect_size
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rect_clip_content = true
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parent.add_child(self)
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func pick(s, g, n : String, c : bool = false) -> void:
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source = s
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end = get_global_transform().xform_inv(source.get_global_transform().xform(0.5*source.rect_size))
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generator = g
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param_name = n
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creating = c
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set_process_input(true)
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func show_link(s, t) -> void:
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set_process_input(false)
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mouse_filter = Control.MOUSE_FILTER_IGNORE
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source = s
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target = t
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update()
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func closest(rect, point) -> Vector2:
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return Vector2(max(rect.position.x, min(rect.end.x, point.x)), max(rect.position.y, min(rect.end.y, point.y)))
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func find_control(gp) -> Dictionary:
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for c in get_parent().get_children():
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if c is GraphNode:
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if c.get("controls") != null:
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for w in c.controls:
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var widget = c.controls[w]
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if widget != null and Rect2(widget.rect_global_position, widget.rect_size*widget.get_global_transform().get_scale()).has_point(gp):
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return { node=c, widget=widget }
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return {}
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func _draw() -> void:
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var start = get_global_transform().xform_inv(source.get_global_transform().xform(0.5*source.rect_size))
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var color = Color(1, 0.5, 0.5, 0.5)
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var rect
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if target != null:
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color = Color(0.5, 1, 0.5, 0.5)
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rect = get_global_transform().xform_inv(target.get_global_transform().xform(Rect2(Vector2(0, 0), target.rect_size)))
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draw_rect(rect, color, false)
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end = closest(rect, start)
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rect = get_global_transform().xform_inv(source.get_global_transform().xform(Rect2(Vector2(0, 0), source.rect_size)))
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draw_rect(rect, color, false)
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start = closest(rect, end)
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draw_line(start, end, color, 1, true)
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func _input(event: InputEvent) -> void:
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if event is InputEventKey:
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if event.scancode == KEY_ESCAPE:
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set_process_input(false)
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queue_free()
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elif event is InputEventMouseMotion:
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var control = find_control(event.global_position)
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end = get_global_transform().xform_inv(event.global_position)
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target = control.widget if control != null and !control.empty() and generator.can_link_parameter(param_name, control.node.generator, control.widget.name) else null
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update()
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elif event is InputEventMouseButton:
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if event.pressed:
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if event.button_index == BUTTON_LEFT:
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var control = find_control(event.global_position)
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if !control.empty():
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generator.link_parameter(param_name, control.node.generator, control.widget.name)
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elif creating:
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generator.remove_parameter(param_name)
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set_process_input(false)
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queue_free()
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get_tree().set_input_as_handled()
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