94 lines
3.0 KiB
C#
94 lines
3.0 KiB
C#
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#if TEXT_TRACK_REQUIRES_TEXTMESH_PRO
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using TMPro;
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using UnityEngine;
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using UnityEngine.Playables;
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namespace Timeline.Samples
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{
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// The runtime instance of a the TextTrack. It is responsible for blending and setting the final data
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// on the Text binding
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public class TextTrackMixerBehaviour : PlayableBehaviour
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{
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Color m_DefaultColor;
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float m_DefaultFontSize;
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string m_DefaultText;
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TMP_Text m_TrackBinding;
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// Called every frame that the timeline is evaluated. ProcessFrame is invoked after its' inputs.
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public override void ProcessFrame(Playable playable, FrameData info, object playerData)
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{
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SetDefaults(playerData as TMP_Text);
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if (m_TrackBinding == null)
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return;
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int inputCount = playable.GetInputCount();
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Color blendedColor = Color.clear;
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float blendedFontSize = 0f;
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float totalWeight = 0f;
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float greatestWeight = 0f;
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string text = m_DefaultText;
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for (int i = 0; i < inputCount; i++)
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{
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float inputWeight = playable.GetInputWeight(i);
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ScriptPlayable<TextPlayableBehaviour> inputPlayable = (ScriptPlayable<TextPlayableBehaviour>)playable.GetInput(i);
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TextPlayableBehaviour input = inputPlayable.GetBehaviour();
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blendedColor += input.color * inputWeight;
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blendedFontSize += input.fontSize * inputWeight;
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totalWeight += inputWeight;
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// use the text with the highest weight
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if (inputWeight > greatestWeight)
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{
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text = input.text;
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greatestWeight = inputWeight;
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}
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}
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// blend to the default values
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m_TrackBinding.color = Color.Lerp(m_DefaultColor, blendedColor, totalWeight);
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m_TrackBinding.fontSize = Mathf.RoundToInt(Mathf.Lerp(m_DefaultFontSize, blendedFontSize, totalWeight));
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m_TrackBinding.text = text;
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}
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// Invoked when the playable graph is destroyed, typically when PlayableDirector.Stop is called or the timeline
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// is complete.
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public override void OnPlayableDestroy(Playable playable)
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{
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RestoreDefaults();
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}
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void SetDefaults(TMP_Text text)
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{
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if (text == m_TrackBinding)
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return;
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RestoreDefaults();
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m_TrackBinding = text;
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if (m_TrackBinding != null)
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{
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m_DefaultColor = m_TrackBinding.color;
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m_DefaultFontSize = m_TrackBinding.fontSize;
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m_DefaultText = m_TrackBinding.text;
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}
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}
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void RestoreDefaults()
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{
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if (m_TrackBinding == null)
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return;
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m_TrackBinding.color = m_DefaultColor;
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m_TrackBinding.fontSize = m_DefaultFontSize;
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m_TrackBinding.text = m_DefaultText;
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}
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}
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}
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#endif
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