protected Face CreateFace(Vector3D axis, Vector3D x, Vector3D y, Textures textures, string textureFileName)
{
Face face = new Face();
// create verticies and texture coordinates
face.Points.Add(axis + x + y);
face.TextureCoords.Add(new Vector3D(255f / 256, 255f / 256, 1f / 256));
face.Points.Add(axis - x + y);
face.TextureCoords.Add(new Vector3D(255f / 256, 1f / 256, 1f / 256));
face.Points.Add(axis - x - y);
face.TextureCoords.Add(new Vector3D(1f / 256, 1f / 256, 1f / 256));
face.Points.Add(axis + x - y);
face.TextureCoords.Add(new Vector3D(1f / 256, 255f / 256, 1f / 256));
face.Points.Reverse();
face.TextureCoords.Reverse();
face.Plane = Plane3D.FromNormalAndPoint(-axis, axis);
face.Texture = textures.RequestTexture(textureFileName);
face.Texture.Clamp = true;
face.Texture.InternalUse = true;
//if( face.Texture.IsLoaded == false ) {
// face.Texture.Load();
// Debug.Assert( face.Texture.IsLoaded == true, "can not load texture: " + face.Texture.FileName );
//}
return(face);
}
protected void SyncFrustumPlanes()
{
if (_bFrustumPlanesDirty == false)
{
return;
}
Vector3D nearClipTranslation = _translation + _forwardAxis * _nearClipDistance;
Vector3D farClipTranslation = _translation + _forwardAxis * _nearClipDistance;
_topPlane = Plane3D.FromNormalAndPoint(_forwardAxis, _translation + nearClipTranslation);
_farPlane = Plane3D.FromNormalAndPoint(_forwardAxis, _translation + farClipTranslation);
Vector3D viewportUpTranslation = _upAxis * _viewportHeight / 2;
Vector3D viewportRightTranslation = _rightAxis * _viewportWidth / 2;
Vector3D topNormal = Vector3D.Cross(_rightAxis, nearClipTranslation + viewportUpTranslation).GetUnit();
_topPlane = Plane3D.FromNormalAndPoint(topNormal, _translation + farClipTranslation);
Vector3D bottomNormal = Vector3D.Cross(-_rightAxis, nearClipTranslation - viewportUpTranslation).GetUnit();
_bottomPlane = Plane3D.FromNormalAndPoint(bottomNormal, _translation + farClipTranslation);
Vector3D rightNormal = Vector3D.Cross(-_upAxis, nearClipTranslation + viewportRightTranslation).GetUnit();
_rightPlane = Plane3D.FromNormalAndPoint(rightNormal, _translation + farClipTranslation);
Vector3D leftNormal = Vector3D.Cross(_upAxis, nearClipTranslation - viewportRightTranslation).GetUnit();
_leftPlane = Plane3D.FromNormalAndPoint(leftNormal, _translation + farClipTranslation);
_bFrustumPlanesDirty = false;
}