39 lines
1.5 KiB
C#
39 lines
1.5 KiB
C#
// Copyright 2016 Google Inc. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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using UnityEngine;
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using System.Collections;
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/// Class that can scale the pages of a PagedScrollRect based on the page's offset.
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public class ScaleScrollEffect : BaseScrollEffect {
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#if UNITY_HAS_GOOGLEVR && (UNITY_ANDROID || UNITY_EDITOR)
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[Range(0.0f, 1.0f)]
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[Tooltip("The scale of the page when it is one page-length away.")]
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public float minScale;
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public override void ApplyEffect(BaseScrollEffect.UpdateData updateData) {
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// Calculate the difference.
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float difference = updateData.scrollOffset - updateData.pageOffset;
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// Calculate the scale for this page.
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float ratioScrolled = Mathf.Abs(difference) / updateData.spacing;
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float scale = ((1.0f - ratioScrolled) * (1.0f - minScale)) + minScale;
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scale = Mathf.Clamp(scale, 0.0f, 1.0f);
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// Update the scale.
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updateData.page.localScale = new Vector3(scale, scale, scale);
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}
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#endif // UNITY_HAS_GOOGLEVR && (UNITY_ANDROID || UNITY_EDITOR)
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}
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