using UnityEngine;
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namespace Flexalon.Samples
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{
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// Changes the material or text color of each child to create a gradient.
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[ExecuteAlways, AddComponentMenu("Flexalon Samples/Flexalon Color Gradient")]
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public class FlexalonColorGradient : MonoBehaviour
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{
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// First color of the gradient.
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[SerializeField]
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private Color _color1;
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public Color Color1
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{
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get => _color1;
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set
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{
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_color1 = value;
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UpdateColors(_node);
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}
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}
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// Last color of the gradient.
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[SerializeField]
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private Color _color2;
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public Color Color2
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{
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get => _color2;
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set
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{
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_color2 = value;
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UpdateColors(_node);
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}
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}
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// Should update colors when layout changes?
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[SerializeField]
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private bool _runOnLayoutChange;
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public bool RunOnLayoutChange
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{
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get => _runOnLayoutChange;
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set
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{
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_runOnLayoutChange = value;
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UpdateRunOnLayoutChange();
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}
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}
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private FlexalonNode _node;
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void OnEnable()
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{
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_node = Flexalon.GetOrCreateNode(gameObject);
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UpdateRunOnLayoutChange();
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UpdateColors(_node);
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}
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void UpdateRunOnLayoutChange()
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{
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_node.ResultChanged -= UpdateColors;
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if (_runOnLayoutChange)
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{
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_node.ResultChanged += UpdateColors;
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}
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}
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void OnDisable()
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{
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_node.ResultChanged -= UpdateColors;
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}
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private void UpdateColors(FlexalonNode node)
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{
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foreach (Transform child in transform)
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{
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var color = Color.Lerp(_color1, _color2, (float)(child.GetSiblingIndex()) / transform.childCount);
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#if UNITY_TMPRO
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if (child.TryGetComponent<TMPro.TMP_Text>(out var text))
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{
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text.color = color;
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} else
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#endif
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#if UNITY_UI
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if (child.TryGetComponent<UnityEngine.UI.Graphic>(out var graphic))
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{
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graphic.color = color;
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} else
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#endif
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if (child.TryGetComponent<FlexalonDynamicMaterial>(out var tdm))
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{
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tdm.SetColor(color);
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}
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}
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}
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}
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}
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