32 lines
1.1 KiB
GDScript
32 lines
1.1 KiB
GDScript
@tool
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extends Path3D
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class_name RoadPath
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@export_tool_button("update_control_points") var action = update_control_points
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func modulo_get_point_position(i):
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return curve.get_point_position(posmod(i, curve.point_count))
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func update_control_points():
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if curve.point_count < 2:
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return
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#
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## Start point: out control based on next point
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#var dir = (curve.get_point_position(1) - curve.get_point_position(0)).normalized()
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#var tangent_length = dir.length() / 3
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#
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#curve.set_point_out(0, dir * tangent_length)
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# Intermediate points: in and out controls based on adjacent points
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for i in range(0, curve.point_count):
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var prev = modulo_get_point_position(i) - modulo_get_point_position(i - 1)
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var next = modulo_get_point_position(i + 1) - modulo_get_point_position(i)
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var prev_dir = prev.normalized()
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var next_dir = next.normalized()
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var tangent_length = next.length() / 3
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var tangent = (prev_dir + next_dir)
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tangent.y = 0
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tangent = tangent.normalized()
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curve.set_point_in(i, -tangent * tangent_length)
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curve.set_point_out(i, tangent * tangent_length)
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