void Update()
{
float mouseY = Input.GetAxis("Mouse Y");
float mouseX = Input.GetAxis("Mouse X");
CameraPitchAngle += mouseY * InputSensitivity * Time.deltaTime;
CameraPitchAngle = Mathf.Clamp(CameraPitchAngle, CameraPitchAngleMin, CameraPitchAngleMax);
if (FollowedObject.transform.position != targetLastPosition)
{
Vector3 direction = FollowedObject.transform.position - targetLastPosition;
Vector2 newDir2d = new Vector2(direction.x, direction.z).normalized;
dir2d = Vector2.Lerp(dir2d, newDir2d, AimingBlendFactor);
}
Vector3 cameraPosition = new Vector3(-dir2d.x, Mathf.Sin(CameraPitchAngle * Mathf.Deg2Rad), -dir2d.y) * Distance;
CameraDesc cameraDesc = new CameraDesc();
cameraDesc.view = Camera.main.cameraToWorldMatrix;
cameraDesc.projection = Camera.main.projectionMatrix;
cameraDesc.nearClipPlane = Camera.main.nearClipPlane;
cameraDesc.fieldOfView = Camera.main.fieldOfView;
cameraDesc.aspect = Camera.main.aspect;
cameraDesc.position = FollowedObject.transform.position + cameraPosition;
cameraDesc.view = Matrix4x4.LookAt(Camera.main.transform.position,
FollowedObject.transform.position,
Vector3.up);
Vector3 surfaceNormal;
var frustrumPoints = ExtractFrustrumNearPlanePoints(cameraDesc);
float distance = GetMinimumCollisionDistanceFromTarget(frustrumPoints, out surfaceNormal);
float adjustedDistance;
if (distance != -1)
{
adjustedDistance = distance;
}
else
{
adjustedDistance = Distance;
}
cameraPosition = new Vector3(-dir2d.x, Mathf.Sin(CameraPitchAngle * Mathf.Deg2Rad), -dir2d.y) * adjustedDistance;
float e = Mathf.Tan(Camera.main.fieldOfView * Mathf.Deg2Rad);
Vector3 offsetFromSurface = surfaceNormal * e * Camera.main.nearClipPlane;
transform.position = FollowedObject.transform.position + cameraPosition + offsetFromSurface;
transform.LookAt(FollowedObject.transform);
targetLastPosition = FollowedObject.transform.position;
}
Vector3[] ExtractFrustrumNearPlanePoints(CameraDesc camera)
{
float zn = camera.nearClipPlane;
float fovRadians = Mathf.Deg2Rad * camera.fieldOfView;
float e = Mathf.Tan(fovRadians * 0.5f);
Vector4 axisX = camera.view.GetColumn(0);
Vector4 axisY = camera.view.GetColumn(1);
Vector4 axisZ = camera.view.GetColumn(2);
Vector3 nearCenter = axisZ * zn;
float nearExtX = e * zn;
float nearExtY = nearExtX / camera.aspect;
Vector4 cameraPos = camera.position;
Vector4 BL = cameraPos + axisX * -nearExtX + axisY * -nearExtY + axisZ * zn;
Vector4 BR = cameraPos + axisX * nearExtX + axisY * -nearExtY + axisZ * zn;
Vector4 TR = cameraPos + axisX * nearExtX + axisY * nearExtY + axisZ * zn;
Vector4 TL = cameraPos + axisX * -nearExtX + axisY * nearExtY + axisZ * zn;
return(new Vector3[] { BL, BR, TR, TL });
}
internal static global::System.Runtime.InteropServices.HandleRef getCPtr(CameraDesc obj)
{
return((obj == null) ? new global::System.Runtime.InteropServices.HandleRef(null, global::System.IntPtr.Zero) : obj.swigCPtr);
}
