/// <summary>
/// Calculates the view and projection matrix for this camera.
/// </summary>
/// <param name="position">The position of the camera.</param>
/// <param name="target">The target point of the camera.</param>
/// <param name="upVector">The current up vector.</param>
/// <param name="zNear">Distance to the nearest rendered pixel.</param>
/// <param name="zFar">Distance to the farest rendered pixel.</param>
/// <param name="screenWidth">The current width of the screen in pixel.</param>
/// <param name="screenHeight">The current height of the screen in pixel.</param>
/// <param name="viewMatrix">The calculated view matrix.</param>
/// <param name="projMatrix">The calculated projection matrix.</param>
protected override void CalculateViewProjectionMatrices(
Vector3 position, Vector3 target, Vector3 upVector, float zNear, float zFar, int screenWidth, int screenHeight,
out Matrix4x4 viewMatrix, out Matrix4x4 projMatrix)
{
m_aspectRatio = (float)screenWidth / (float)screenHeight;
viewMatrix = Matrix4x4Ex.CreateLookAtLH(
position,
target,
upVector);
projMatrix = Matrix4x4Ex.CreatePerspectiveFovLH(
m_fov,
m_aspectRatio,
zNear, zFar);
}
/// <summary>
/// Calculates the view and projection matrix for this camera.
/// </summary>
/// <param name="position">The position of the camera.</param>
/// <param name="target">The target point of the camera.</param>
/// <param name="upVector">The current up vector.</param>
/// <param name="zNear">Distance to the nearest rendered pixel.</param>
/// <param name="zFar">Distance to the farest rendered pixel.</param>
/// <param name="screenWidth">The current width of the screen in pixel.</param>
/// <param name="screenHeight">The current height of the screen in pixel.</param>
/// <param name="viewMatrix">The calculated view matrix.</param>
/// <param name="projMatrix">The calculated projection matrix.</param>
protected override void CalculateViewProjectionMatrices(
Vector3 position, Vector3 target, Vector3 upVector, float zNear, float zFar, int screenWidth, int screenHeight,
out Matrix4x4 viewMatrix, out Matrix4x4 projMatrix)
{
if (m_zoomFactor <= ZOOM_FACTOR_MIN)
{
m_zoomFactor = ZOOM_FACTOR_MIN;
}
projMatrix = Matrix4x4Ex.CreateOrthoLH(
(float)ScreenWidth / m_zoomFactor, (float)screenHeight / m_zoomFactor,
-Math.Abs(Math.Max(zNear, zFar)),
Math.Abs(Math.Max(zNear, zFar)));
viewMatrix = Matrix4x4Ex.CreateLookAtLH(
position,
target,
upVector);
}
