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104 lines
3.9 KiB
C#
104 lines
3.9 KiB
C#
/// Credit Tomasz Schelenz
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/// Sourced from - https://bitbucket.org/SimonDarksideJ/unity-ui-extensions/issues/83/ui_tweenscale
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/// Demo - https://youtu.be/uVTV7Udx78k?t=1m33s Dynamic scaling of text or image (including button) based on curves. works on scrollrect scale so you can pretty much use it for any ui type.
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/// Notes In some cases it can create spikes due to redrawing on change, it is recommended to use it on simple objects in separated canvases to avoid redrawing full canvas.
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using System.Collections;
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namespace UnityEngine.UI.Extensions
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{
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/// <summary>
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/// Dynamic scaling of text or image (including button) based on curves
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///
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/// Fields
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/// - animCurve - animation curve for scale (if isUniform set to false, will apply only to X scale)
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/// - speed - animation speed
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/// - isLoop - animation will play infinitely (in order to make it work set your animation curve to loop)
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/// - playAtAwake - starts automatically with script becoming active. Otherwise you need to call Play() method.
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/// - isUniform - if false animCurve will modify object X scale and animCurveY - Y scale.
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///
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///
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/// Notes
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/// - If you want to stop the animation call the ResetTween() method.
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/// - In some cases it can create spikes due to redrawing on change, it is recommended to use it on simple objects in separated canvases to
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/// avoid redrawing full canvas.
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/// - If you want to scale object only in 1 axis select non unifor and use linear curve from 1 to 1 to lock the scale.
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///
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/// </summary>
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[AddComponentMenu("UI/Extensions/UI Tween Scale")]
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public class UI_TweenScale : MonoBehaviour
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{
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//ANIMATION FOR X AND Y, OR X IF isUniform set to false
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public AnimationCurve animCurve;
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[Tooltip("Animation speed multiplier")]
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public float speed = 1;
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[Tooltip("If true animation will loop, for best effect set animation curve to loop on start and end point")]
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public bool isLoop = false;
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//IF TRUE ANIMATION STARTS AUTOMATICALLY
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[Tooltip("If true animation will start automatically, otherwise you need to call Play() method to start the animation")]
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public bool playAtAwake = false;
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[Space(10)]
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//if true both x and y axis will be using animCurve;
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[Header("Non uniform scale")]
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[Tooltip("If true component will scale by the same amount in X and Y axis, otherwise use animCurve for X scale and animCurveY for Y scale")]
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public bool isUniform = true;
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//IF isUniform set to false use this for Y axis
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public AnimationCurve animCurveY;
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private Vector3 initScale;
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private Transform myTransform;
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void Awake()
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{
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myTransform = GetComponent<Transform>();
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initScale = myTransform.localScale;
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if (playAtAwake)
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{
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Play();
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}
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}
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public void Play()
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{
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StartCoroutine("Tween");
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}
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Vector3 newScale = Vector3.one;
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IEnumerator Tween()
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{
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myTransform.localScale = initScale;
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float t = 0;
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float maxT = animCurve.keys[animCurve.length - 1].time;
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while (t < maxT || isLoop)
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{
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t += speed * Time.deltaTime;
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if (!isUniform)
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{
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newScale.x = 1 * animCurve.Evaluate(t);
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newScale.y = 1 * animCurveY.Evaluate(t);
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myTransform.localScale = newScale;
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}
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else
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{
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myTransform.localScale = Vector3.one * animCurve.Evaluate(t);
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}
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yield return null;
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}
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}
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public void ResetTween()
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{
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StopCoroutine("Tween");
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myTransform.localScale = initScale;
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}
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}
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}
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