private void UpdateCameraMatrix()
{
// right-handed coordinates
#if false
// front view
var eye = new Vector3D(0.0, 0.0, -CameraDistance);
var at = new Vector3D(0.0, 0.0, 0.0);
var up = new Vector3D(0.0, 1.0, 0.0);
var lookAt = WWMatrixUtil.CalculateLookAt(eye, at, up);
#else
// virtual trackball
var cameraRot = mVirtualTrackball.RotationMatrix();
var cameraTranslate = new Matrix3D();
cameraTranslate.Translate(new Vector3D(0.0, 0.0, -mCameraDistanceCurrent));
var cameraMat = cameraTranslate * cameraRot;
var lookAt = cameraMat;
lookAt.Invert();
#endif
var viewProjectionMatrix = WWMatrixUtil.CreatePerspectiveProjectionMatrix(mCameraNear, mCameraDistanceCurrent * 2.0, CameraFovHDegree, 1.0);
mWorldProjectionMatrix = lookAt * viewProjectionMatrix;
}
private void RedrawRoom()
{
DrawModel(mRoom.RoomModel, Matrix3D.Identity, new SolidColorBrush(Colors.White));
Matrix3D listenerMatrix = new Matrix3D();
listenerMatrix.Translate((Vector3D)mRoom.ListenerPos);
DrawModel(mRoom.ListenerModel, listenerMatrix, new SolidColorBrush(Colors.Gray));
for (int i = 0; i < WWRoom.NUM_OF_SPEAKERS; ++i)
{
var pos = mRoom.SpeakerPos(i);
var dir = mRoom.SpeakerDir(i);
Vector3D posV = new Vector3D(pos.X, pos.Y, pos.Z);
Vector3D at = new Vector3D(pos.X + dir.X, pos.Y + dir.Y, pos.Z + dir.Z);
Vector3D up = new Vector3D(0.0, 1.0, 0.0);
Matrix3D speakerMatrixInv = WWMatrixUtil.CalculateLookAt(posV, at, up);
var speakerMatrix = speakerMatrixInv;
speakerMatrix.Invert();
DrawModel(mRoom.SpeakerModel, speakerMatrix, new SolidColorBrush(Colors.Gray));
}
}