// handles determining color of elementGeometry3Ds when any property is set false
// as the state of other properties must be checked to determine the correct color / material.
private static void OnPointOrLinePropertySetFalse(DependencyObject obj)
{
if (!(obj is GeometryModel3D && obj.GetType() != typeof(BillboardTextModel3D)))
{
return;
}
//point or line case
GeometryModel3D geom = obj as GeometryModel3D;
if (geom is DynamoPointGeometryModel3D || geom is DynamoLineGeometryModel3D)
{
//if selection is not enabled determine if we should reset colors or set transparent colors
if (!GetShowSelected(geom))
{
if (GetIsolationMode(geom))
{
SetAlpha(geom, HelixWatch3DViewModel.ptAndLineIsolatedTransparencyColor.Alpha, true);
}
else if (GetIsFrozen(geom))
{
SetAlpha(geom, HelixWatch3DViewModel.FrozenMaterial.DiffuseColor.Alpha, true);
}
//all attached props are false, lets reset colors
else
{
RequestResetColorsForDynamoGeometryModel?.Invoke(geom.Tag as string);
}
}
}
}
private static void ShowSelectedPropertyChanged(DependencyObject obj, DependencyPropertyChangedEventArgs args)
{
if (!(obj is GeometryModel3D && obj.GetType() != typeof(BillboardTextModel3D)))
{
return;
}
var geom = (GeometryModel3D)obj;
var meshGeom = geom as DynamoGeometryModel3D;
if (meshGeom != null)
{
HandleMeshPropertyChange(meshGeom, args);
}
//implementation for lines and points
else if (geom is DynamoPointGeometryModel3D || geom is DynamoLineGeometryModel3D)
{
if ((bool)args.NewValue)
{
//if the item is both selected and isolation mode is on, then we should color the item as normal OR as frozen.
if (GetIsolationMode(geom))
{
//selected, isolated, and frozen.
if (GetIsFrozen(geom))
{
SetAlpha(geom, HelixWatch3DViewModel.FrozenMaterial.DiffuseColor.Alpha, true);
}
//selected and isolated, so we just reset the colors.
else
{
//reset the colors
RequestResetColorsForDynamoGeometryModel?.Invoke(geom.Tag as string);
}
}
//only selected.
else
{
//TODO cache this and update after helix 2.11 is released
SetAllColors(geom, HelixWatch3DViewModel.SelectedMaterial.DiffuseColor);
}
}
else
{
OnPointOrLinePropertySetFalse(geom);
}
}
}
/// <summary>
/// Sets alpha channel of existing colors to given value, optionally attempts to reset all colors
/// first to original colors from renderpackages.
/// </summary>
/// <param name="geom">Geometry to modify.</param>
/// <param name="alpha">Alpha value to set on geometry. Float between 0 and 1.0.</param>
/// <param name="resetColorsFirst">If true, colors are reset to those stored in the original render packages, before having alpha modified
/// one may want to use this to reset colors from a selected state (blue) back to the original colors before freezing the geo for example. </param>
private static void SetAlpha(GeometryModel3D geom, float alpha, bool resetColorsFirst)
{
if (resetColorsFirst)
{
//reset colors if handled
RequestResetColorsForDynamoGeometryModel?.Invoke(geom.Tag as string);
}
//then modify alpha
var newColors = new Color4Collection(geom.Geometry.Colors.Select(col =>
{
col.Alpha = alpha;
return(col);
}));
geom.Geometry.Colors = newColors;
}
