public virtual void Setup()
{
// push history stream, so that we can do undo/redo internal to tool,
// that will not end up in external history
push_history_stream();
// clear selection here so that multi-select GroupSO goes away, otherwise
// when we copy frmaes below, they are relative to that GroupSO, and things move
inputSelection = new List <SceneObject>(Scene.Selected);
set_allow_selection_changes(true);
Scene.ClearSelection();
set_allow_selection_changes(false);
objects = new List <TargetObject>();
foreach (var so in InputSOs)
{
TargetObject o = new TargetObject();
o.SO = so;
o.InputMeshV = new DVector <double>(o.SO.Mesh.VerticesBuffer);
if (o.SO.Mesh.HasVertexNormals)
{
o.InputMeshN = new DVector <float>(o.SO.Mesh.NormalsBuffer);
}
o.objFrame = so.GetLocalFrame(CoordSpace.ObjectCoords);
o.sceneFrame = so.GetLocalFrame(CoordSpace.SceneCoords);
o.sceneToObjUnitScale = SceneTransforms.SceneToObject(o.SO, 1.0f);
o.localScale = so.GetLocalScale();
o.localBounds = so.GetLocalBoundingBox();
Box3f sb = so.GetBoundingBox(CoordSpace.SceneCoords);
o.sceneBounds = sb.ToAABB();
o.curLocalScale = o.localScale;
o.curSceneFrame = o.sceneFrame;
objects.Add(o);
}
if (false && objects.Count == 1)
{
originalDims = objects[0].localBounds;
}
else
{
originalDims = objects[0].sceneBounds;
for (int k = 1; k < objects.Count; ++k)
{
originalDims.Contain(objects[k].sceneBounds);
}
}
currentDims = originalDims;
sharedOriginS = (Vector3f)originalDims.Point(0, -1, 0);
initialize_parameters();
}
virtual public void PreRender()
{
if (in_shutdown())
{
return;
}
if (parameters_dirty)
{
PolyLine2d spiral = PolyLine2d.MakeBoxSpiral(Vector2d.Zero, length, PathWidth + spacing);
DMesh3 mesh = new DMesh3();
List <int> bottom_verts = new List <int>();
List <int> top_verts = new List <int>();
for (int i = 0; i < spiral.VertexCount; ++i)
{
Vector2d x = spiral[i];
Vector3d vb = new Vector3d(x.x, 0, x.y);
bottom_verts.Add(mesh.AppendVertex(vb));
top_verts.Add(mesh.AppendVertex(vb + Height * Vector3d.AxisY));
}
MeshEditor editor = new MeshEditor(mesh);
editor.StitchSpan(bottom_verts, top_verts);
PreviewSO.ReplaceMesh(mesh, true);
Vector3d translate = scene_bounds.Point(1, -1, 1);
translate.x += spiral.Bounds.Width + PathWidth;
Frame3f sceneF = Frame3f.Identity.Translated((Vector3f)translate);
PreviewSO.SetLocalFrame(sceneF, CoordSpace.SceneCoords);
parameters_dirty = false;
}
}
