protected void ComputeViewPortRect(int leftCameraViewPortHeight, int leftCameraViewPortWidth)
{
float num = CameraConfigurationUtility.ExtractVerticalCameraFoV(this.mPrimaryCamera.projectionMatrix.inverse) * 0.0174532924f;
float num2 = (float)(Math.Tan((double)(CameraDevice.Instance.GetCameraFieldOfViewRads().y / 2f)) / Math.Tan((double)(num / 2f)));
float num3 = (float)leftCameraViewPortHeight * num2;
CameraDevice.VideoModeData videoMode = CameraDevice.Instance.GetVideoMode(this.mCameraDeviceMode);
ScreenOrientation surfaceOrientation = SurfaceUtilities.GetSurfaceOrientation();
float num4;
if (surfaceOrientation == ScreenOrientation.Landscape || surfaceOrientation == ScreenOrientation.LandscapeLeft || surfaceOrientation == ScreenOrientation.LandscapeRight)
{
num4 = num3 * (float)videoMode.width / (float)videoMode.height;
}
else
{
num4 = num3 * (float)videoMode.height / (float)videoMode.width;
}
int num5 = (leftCameraViewPortWidth - (int)num4) / 2;
int num6 = (leftCameraViewPortHeight - (int)num3) / 2;
this.mVideoBackgroundViewportRect = new Rect((float)num5, (float)num6, (float)((int)num4), (float)((int)num3));
if (base.IsVideoBackgroundEnabled())
{
this.mVideoBackgroundBehaviours[this.mPrimaryCamera].ApplyStereoDepthToMatrices();
this.mVideoBackgroundBehaviours[this.mSecondaryCamera].ApplyStereoDepthToMatrices();
}
}
public void ApplyCorrectedProjectionMatrix(Matrix4x4 projectionMatrix, bool primaryCamera)
{
Matrix4x4 inverse = projectionMatrix.inverse;
if (primaryCamera)
{
this.mExternallySetLeftMatrix = projectionMatrix;
CameraConfigurationUtility.ExtractCameraClippingPlanes(inverse, out this.mNewLeftNearClipPlane, out this.mNewLeftFarClipPlane);
this.mNewLeftVerticalVirtualFoV = CameraConfigurationUtility.ExtractVerticalCameraFoV(inverse);
this.mNewLeftHorizontalVirtualFoV = CameraConfigurationUtility.ExtractHorizontalCameraFoV(inverse);
}
else
{
this.mExternallySetRightMatrix = projectionMatrix;
CameraConfigurationUtility.ExtractCameraClippingPlanes(inverse, out this.mNewRightNearClipPlane, out this.mNewRightFarClipPlane);
this.mNewRightVerticalVirtualFoV = CameraConfigurationUtility.ExtractVerticalCameraFoV(inverse);
this.mNewRightHorizontalVirtualFoV = CameraConfigurationUtility.ExtractHorizontalCameraFoV(inverse);
}
if (this.CameraParameterChanged())
{
ScreenOrientation screenOrientation;
this.CheckForSurfaceChanges(out screenOrientation);
}
this.mPrimaryCamera.projectionMatrix = this.mLastAppliedLeftProjection;
this.mSecondaryCamera.projectionMatrix = this.mLastAppliedRightProjection;
if (base.IsVideoBackgroundEnabled())
{
this.mVideoBackgroundBehaviours[this.mPrimaryCamera].ApplyStereoDepthToMatrices();
this.mVideoBackgroundBehaviours[this.mSecondaryCamera].ApplyStereoDepthToMatrices();
}
}
public static Matrix4x4 ScalePerspectiveProjectionMatrix(Matrix4x4 inputMatrix, float targetVerticalFoVDeg, float targetHorizontalFoVDeg)
{
Matrix4x4 result = inputMatrix;
float num = targetVerticalFoVDeg * 0.0174532924f;
float num2 = targetHorizontalFoVDeg * 0.0174532924f;
double arg_3C_0 = (double)(CameraConfigurationUtility.ExtractVerticalCameraFoV(inputMatrix.inverse) * 0.0174532924f);
float num3 = CameraConfigurationUtility.ExtractHorizontalCameraFoV(inputMatrix.inverse) * 0.0174532924f;
float num4 = (float)(Math.Tan(arg_3C_0 / (double)2f) / Math.Tan((double)(num / 2f)));
float num5 = (float)(Math.Tan((double)(num3 / 2f)) / Math.Tan((double)(num2 / 2f)));
result[0] = result[0] * num5;
result[8] = result[8] * num5;
result[5] = result[5] * num4;
result[9] = result[9] * num4;
return(result);
}
