Curves SketchOnSurface

Description
This tool maps a sketch onto a face, like a label on a bottle. The sketch must be actually attached to a face (see Sketch.Support). The mode of the sketch has no effect on the result.



Usage

 * 1) Switch to the [[Image:Curves_workbench_icon.svg|24px]] Curves workbench (install from [[Image:Std_AddonMgr.svg|24px]] Addon Manager is necessary, if not previously installed)
 * 2) There are 2 methods to use the SketchOnSurface tool:
 * 3) ; You already have a sketch that you want to map on a face:
 * 4) Attach the sketch to the target face.
 * 5) Edit the sketch and add a Construction (blue) rectangle around the geometries. This rectangle will be the parametric bounds of the face.
 * 6) Exit edit mode.
 * 7) Select the sketch.
 * 8) Activate SketchOnSurface by either:
 * 9) * Pressing on the [[Image:Curves_SketchOnSurface.svg|24px]] button
 * 10) * Using the entry in the Curves menu
 * 11) ; You have no sketch to map yet:
 * 12) Select the target face in the 3D view
 * 13) Activate SketchOnSurface by either:
 * 14) * Pressing on the [[Image:Curves_SketchOnSurface.svg|24px]] button
 * 15) * Using the entry in the Curves menu
 * 16) A Sketch_On_Surface object appears in the Tree view.
 * 17) Expand this object to make the Mapped_Sketch appear below.
 * 18) Edit the sketch and add geometries inside the blue construction bounds.
 * 19) A SketchOnSurface object will be created on the surface of your object based on this sketch.

Options

 * Fill Extrusion: When the Thickness value is not null, this will generate lofting faces (the blue faces in the above screenshot).
 * Fill Faces: This will fill all the geometrical figures closed in faces (the red faces in the above screenshot).
 * Offset: This will push the shapes mapped above into the target face. Do not put an offset greater than the thickness, it makes the face disappear on the inside.
 * Thickness: If not null, this will give thickness to the surfaces created above.

Limitations
It is assumed that all geometry in the sketch is enclosed within the blue construction frame. Note that this includes all other construction geometry, as well as the internal geometry of complex curves (Bezier, Ellipse). If this is not the case the bounding box of the sketch will be larger than the construction frame and the final mapping will be scaled down accordingly. However, if one hides said internal geometry, the bounding box calculations will work as expected.