/// <summary>
/// Computes the effective projection matrix for the given
/// camera.
/// </summary>
public static Matrix3D GetProjectionMatrix(Camera camera, double aspectRatio)
{
if (camera == null)
{
throw new ArgumentNullException("camera");
}
PerspectiveCamera perspectiveCamera = camera as PerspectiveCamera;
if (perspectiveCamera != null)
{
return GetProjectionMatrix(perspectiveCamera, aspectRatio);
}
OrthographicCamera orthographicCamera = camera as OrthographicCamera;
if (orthographicCamera != null)
{
return GetProjectionMatrix(orthographicCamera, aspectRatio);
}
MatrixCamera matrixCamera = camera as MatrixCamera;
if (matrixCamera != null)
{
return matrixCamera.ProjectionMatrix;
}
throw new ArgumentException(String.Format("Unsupported camera type '{0}'.", camera.GetType().FullName), "camera");
}
/// <summary>
/// Computes the effective view matrix for the given
/// camera.
/// </summary>
public static Matrix3D GetViewMatrix(Camera camera)
{
if (camera == null) throw new ArgumentNullException("camera");
ProjectionCamera projectionCamera = camera as ProjectionCamera;
if (projectionCamera != null)
{
return GetViewMatrix(projectionCamera);
}
MatrixCamera matrixCamera = camera as MatrixCamera;
if (matrixCamera != null)
{
return matrixCamera.ViewMatrix;
}
throw new ArgumentException(String.Format("Unsupported camera type '{0}'.", camera.GetType().FullName), "camera");
}
/// <summary>
/// Gets an information string about the specified camera.
/// </summary>
/// <param name="camera">
/// The camera.
/// </param>
/// <returns>
/// The get info.
/// </returns>
public static string GetInfo(Camera camera)
{
var matrixCamera = camera as MatrixCamera;
var perspectiveCamera = camera as PerspectiveCamera;
var projectionCamera = camera as ProjectionCamera;
var orthographicCamera = camera as OrthographicCamera;
var sb = new StringBuilder();
sb.AppendLine(camera.GetType().Name);
if (projectionCamera != null)
{
sb.AppendLine(
string.Format(
CultureInfo.InvariantCulture,
"LookDirection:\t{0:0.000},{1:0.000},{2:0.000}",
projectionCamera.LookDirection.X,
projectionCamera.LookDirection.Y,
projectionCamera.LookDirection.Z));
sb.AppendLine(
string.Format(
CultureInfo.InvariantCulture,
"UpDirection:\t{0:0.000},{1:0.000},{2:0.000}",
projectionCamera.UpDirection.X,
projectionCamera.UpDirection.Y,
projectionCamera.UpDirection.Z));
sb.AppendLine(
string.Format(
CultureInfo.InvariantCulture,
"Position:\t\t{0:0.000},{1:0.000},{2:0.000}",
projectionCamera.Position.X,
projectionCamera.Position.Y,
projectionCamera.Position.Z));
var target = projectionCamera.Position + projectionCamera.LookDirection;
sb.AppendLine(
string.Format(
CultureInfo.InvariantCulture,
"Target:\t\t{0:0.000},{1:0.000},{2:0.000}",
target.X,
target.Y,
target.Z));
sb.AppendLine(
string.Format(
CultureInfo.InvariantCulture, "NearPlaneDist:\t{0}", projectionCamera.NearPlaneDistance));
sb.AppendLine(
string.Format(CultureInfo.InvariantCulture, "FarPlaneDist:\t{0}", projectionCamera.FarPlaneDistance));
}
if (perspectiveCamera != null)
{
sb.AppendLine(
string.Format(CultureInfo.InvariantCulture, "FieldOfView:\t{0:0.#}°", perspectiveCamera.FieldOfView));
}
if (orthographicCamera != null)
{
sb.AppendLine(
string.Format(CultureInfo.InvariantCulture, "Width:\t{0:0.###}", orthographicCamera.Width));
}
if (matrixCamera != null)
{
sb.AppendLine("ProjectionMatrix:");
sb.AppendLine(matrixCamera.ProjectionMatrix.ToString(CultureInfo.InvariantCulture));
sb.AppendLine("ViewMatrix:");
sb.AppendLine(matrixCamera.ViewMatrix.ToString(CultureInfo.InvariantCulture));
}
return sb.ToString().Trim();
}
