Unity中Scene视图可见但Game视图不可见,LineRenderer绘图问题求助
问题:Scene视图可见绘制线条,但Game视图无法显示
我在Scene视图中能看到绘制的线条,但在Game视图里看不到。希望在Game视图中显示线条,验证功能是否正常。

代码上下文
public class tapLine : MonoBehaviour { public LineRenderer lineRenderer; private bool isDrawing = false; private Vector3 startPoint; private void Update() { if (Input.touchCount > 0) { Touch touch = Input.GetTouch(0); if (touch.phase == TouchPhase.Began) { StartDrawing(touch.position); } else if (touch.phase == TouchPhase.Moved && isDrawing) { UpdateDrawing(touch.position); } else if (touch.phase == TouchPhase.Ended && isDrawing) { EndDrawing(); } } } private void StartDrawing(Vector3 startPos) { isDrawing = true; startPoint = Camera.main.ScreenToWorldPoint(startPos); lineRenderer.positionCount = 1; lineRenderer.SetPosition(0, startPoint); } private void UpdateDrawing(Vector3 currentPos) { Vector3 worldPosition = Camera.main.ScreenToWorldPoint(currentPos); lineRenderer.positionCount = 2; lineRenderer.SetPosition(1, worldPosition); } private void EndDrawing() { isDrawing = false; lineRenderer.positionCount = 0; } }
解决方法
- 修正屏幕坐标转世界坐标的Z轴值:
ScreenToWorldPoint需要明确Z轴深度(相对于相机的距离),否则生成的点会和相机重叠导致不可见。修改StartDrawing和UpdateDrawing方法:private void StartDrawing(Vector3 startPos) { isDrawing = true; // 添加Z轴深度,确保线条在相机可视范围内 Vector3 screenPosWithDepth = new Vector3(startPos.x, startPos.y, Camera.main.nearClipPlane + 1f); startPoint = Camera.main.ScreenToWorldPoint(screenPosWithDepth); lineRenderer.positionCount = 1; lineRenderer.SetPosition(0, startPoint); } private void UpdateDrawing(Vector3 currentPos) { Vector3 screenPosWithDepth = new Vector3(currentPos.x, currentPos.y, Camera.main.nearClipPlane + 1f); Vector3 worldPosition = Camera.main.ScreenToWorldPoint(screenPosWithDepth); lineRenderer.positionCount = 2; lineRenderer.SetPosition(1, worldPosition); } - 检查LineRenderer的材质与颜色:确保LineRenderer使用的材质不透明,颜色Alpha值不为0,可直接使用Unity内置的
Sprites/Default材质测试。 - 确认相机Culling Mask:检查相机的Culling Mask是否包含LineRenderer所在的层(默认是Default层,不要排除该层)。
- 调整线条宽度:确保LineRenderer的
Start Width和End Width设置为大于0的值(例如0.1),避免因宽度为0导致不可见。
内容的提问来源于stack exchange,提问作者Aloera Polk
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