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108 lines
4.7 KiB
108 lines
4.7 KiB
1 year ago
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using UnityEngine;
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using System.Collections;
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using com.rfilkov.kinect;
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namespace com.rfilkov.components
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{
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/// <summary>
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/// Background static image is component that displays the static image on RawImage texture, usually the scene background.
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/// </summary>
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public class BackgroundStaticImage : MonoBehaviour
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{
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[Tooltip("Image dimensions in pixels.")]
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public Vector2Int imageSize = Vector2Int.zero;
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[Tooltip("Image scale in X and Y directions.")]
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public Vector2 imageScale = Vector2.one;
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[Tooltip("RawImage used to display the color camera feed.")]
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public UnityEngine.UI.RawImage backgroundImage;
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[Tooltip("Camera used to display the background image. Set it, if you'd like to allow background image to resize, to match the color image's aspect ratio.")]
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public Camera backgroundCamera;
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// last camera rect width & height
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private float lastCamRectW = 0;
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private float lastCamRectH = 0;
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private Vector2 initialAnchorPos = Vector2.zero;
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void Start()
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{
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if (backgroundImage == null)
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{
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backgroundImage = GetComponent<UnityEngine.UI.RawImage>();
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}
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if(imageSize == Vector2.zero && backgroundImage != null && backgroundImage.texture != null)
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{
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imageSize = new Vector2Int(backgroundImage.texture.width, backgroundImage.texture.height);
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}
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}
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void Update()
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{
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float cameraWidth = backgroundCamera ? backgroundCamera.pixelRect.width : 0f;
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float cameraHeight = backgroundCamera ? backgroundCamera.pixelRect.height : 0f;
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if (backgroundImage && (lastCamRectW != cameraWidth || lastCamRectH != cameraHeight))
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{
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lastCamRectW = cameraWidth;
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lastCamRectH = cameraHeight;
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backgroundImage.rectTransform.localScale = new Vector3(imageScale.x, imageScale.y, 1f);
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backgroundImage.color = Color.white;
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//Debug.Log("aPos: " + backgroundImage.rectTransform.anchoredPosition + ", aMin: " + backgroundImage.rectTransform.anchorMin +
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// ", aMax:" + backgroundImage.rectTransform.anchorMax + ", pivot: " + backgroundImage.rectTransform.pivot +
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// ", size: " + backgroundImage.rectTransform.sizeDelta);
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if (backgroundCamera != null)
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{
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// adjust image's size and position to match the stream aspect ratio
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int imageWidth = imageSize.x;
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int imageHeight = imageSize.y;
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if (imageWidth == 0 || imageHeight == 0)
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return;
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RectTransform rectImage = backgroundImage.rectTransform;
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float rectWidth = (rectImage.anchorMin.x != rectImage.anchorMax.x) ? cameraWidth * (rectImage.anchorMax.x - rectImage.anchorMin.x) : rectImage.sizeDelta.x;
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float rectHeight = (rectImage.anchorMin.y != rectImage.anchorMax.y) ? cameraHeight * (rectImage.anchorMax.y - rectImage.anchorMin.y) : rectImage.sizeDelta.y;
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if (imageWidth > imageHeight)
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rectWidth = rectHeight * imageWidth / imageHeight;
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else
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rectHeight = rectWidth * imageHeight / imageWidth;
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Vector2 pivotOffset = (rectImage.pivot - new Vector2(0.5f, 0.5f)) * 2f;
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//Vector2 imageScale = this.imageScale;
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Vector2 anchorPos = rectImage.anchoredPosition + pivotOffset * imageScale * new Vector2(rectWidth, rectHeight);
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if (rectImage.anchorMin.x != rectImage.anchorMax.x)
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{
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rectWidth = -(cameraWidth - rectWidth);
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}
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if (rectImage.anchorMin.y != rectImage.anchorMax.y)
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{
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rectHeight = -(cameraHeight - rectHeight);
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}
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rectImage.sizeDelta = new Vector2(rectWidth, rectHeight);
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rectImage.anchoredPosition = initialAnchorPos = anchorPos;
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//Debug.Log("imgSize: " + imageSize + ", camW: " + cameraWidth + ", camH: " + cameraHeight + ", sizeDelta: " + rectImage.sizeDelta + ", anchoredPosition: " + rectImage.anchoredPosition);
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}
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}
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//RectTransform rectTransform = backgroundImage.rectTransform;
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//Debug.Log("pivot: " + rectTransform.pivot + ", anchorPos: " + rectTransform.anchoredPosition + ", \nanchorMin: " + rectTransform.anchorMin + ", anchorMax: " + rectTransform.anchorMax);
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}
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}
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}
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