Created
March 11, 2023 21:35
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CameraQuad.cs
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| private void CalculateCorners() | |
| { | |
| float aspectRatio = Screen.width / (float)Screen.height; | |
| if (this.Camera == null) | |
| { | |
| this.Camera = Camera.main; | |
| } | |
| // IMPORTANT: Do not use Screen.width here, use Camera.pixelWidth!!! | |
| // Debug.Log("Scr " + Screen.width); | |
| // Debug.Log("Cam " + this.Camera.pixelWidth); | |
| var d = this.DistanceFromCamera; | |
| var w = this.Camera.pixelWidth; | |
| var h = this.Camera.pixelHeight; | |
| Vector3 res = new Vector3(w, h, 1); | |
| var p = this.MapperPrefs; | |
| // Find the corners of the screen in pixel-space | |
| p.bottomLeft.screenPos = new Vector3(0, 0, d) + Vector3.Scale(p.bottomLeft.screenOffset, res); | |
| p.topLeft.screenPos = new Vector3(0, h, d) + Vector3.Scale(p.topLeft.screenOffset, res); | |
| p.topRight.screenPos = new Vector3(w, h, d) + Vector3.Scale(p.topRight.screenOffset, res); | |
| p.bottomRight.screenPos = new Vector3(w, 0, d) + Vector3.Scale(p.bottomRight.screenOffset, res); | |
| p.bottomLeft.worldPos = this.Camera.ScreenToWorldPoint(p.bottomLeft.screenPos); | |
| p.topLeft.worldPos = this.Camera.ScreenToWorldPoint(p.topLeft.screenPos); | |
| p.topRight.worldPos = this.Camera.ScreenToWorldPoint(p.topRight.screenPos); | |
| p.bottomRight.worldPos = this.Camera.ScreenToWorldPoint(p.bottomRight.screenPos); | |
| // Displace without changing screen position (along ray from camera) | |
| Vector3 origin = this.Camera.transform.position; | |
| p.topLeft.worldPos = this.Displace(origin, p.topLeft.worldPos, p.topLeft.depthDisplace); | |
| p.topRight.worldPos = this.Displace(origin, p.topRight.worldPos, p.topRight.depthDisplace); | |
| p.bottomLeft.worldPos = this.Displace(origin, p.bottomLeft.worldPos, p.bottomLeft.depthDisplace); | |
| p.bottomRight.worldPos = this.Displace(origin, p.bottomRight.worldPos, p.bottomRight.depthDisplace); | |
| // Convert to local space - not necessary if the quad mesh is always rendered at the origin with default rotation | |
| p.bottomLeft.localPos = this.transform.InverseTransformPoint(p.bottomLeft.worldPos); | |
| p.topLeft.localPos = this.transform.InverseTransformPoint(p.topLeft.worldPos); | |
| p.topRight.localPos = this.transform.InverseTransformPoint(p.topRight.worldPos); | |
| p.bottomRight.localPos = this.transform.InverseTransformPoint(p.bottomRight.worldPos); | |
| this.normalLocal = Vector3.Cross( | |
| p.topRight.localPos - p.topLeft.localPos, | |
| p.bottomLeft.localPos - p.topLeft.localPos).normalized; | |
| // Calculate normals for each corner | |
| p.bottomLeft.normal = Vector3.Cross( | |
| p.topLeft.localPos - p.bottomLeft.localPos, | |
| p.bottomRight.localPos - p.bottomLeft.localPos).normalized; | |
| p.topLeft.normal = Vector3.Cross( | |
| p.topRight.localPos - p.topLeft.localPos, | |
| p.bottomLeft.localPos - p.topLeft.localPos).normalized; | |
| p.topRight.normal = Vector3.Cross( | |
| p.bottomRight.localPos - p.topRight.localPos, | |
| p.topLeft.localPos - p.topRight.localPos).normalized; | |
| p.bottomRight.normal = Vector3.Cross( | |
| p.bottomLeft.localPos - p.bottomRight.localPos, | |
| p.topRight.localPos - p.bottomRight.localPos).normalized; | |
| } | |
| private Vector3 Displace(Vector3 origin, Vector3 position, float displacement) | |
| { | |
| Vector3 dir = position - origin; | |
| return position + dir.normalized * displacement; | |
| } |
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