Project a sketch for fast
design label mapping
This section will cover
how to use sketch projection for texture mapping a typical product design.
In the past, texture map placement across multiple trimmed surface
was challenging, but this is now much easier with current sketch
This example image use
sketch projection for the small PDA button icons, PDA display, and
red sketch. The scene is rendered using Alias RayTracing.
- Use a texture brush with a fine plastic
grain to texture paint the first layer.
- In this example, the texture brush is
a little too dark; to lighten it, open the Canvas Layer
Editor (Windows > Editors > Canvas Layer Editor ) and make
this layer semi-transparent by changing the value.
- Create curves to define the design primary
design components. In this example, we have assigned these curves
to a 3D layer and made this layer symmetric.
- Create more curves that define the icons
and create paint shapes from these curves or import standard company
- Import a graphic design page for the
Next, clean up the appearance of the gray base
plastic layer. We could use a mask layer and delete the plastic
outside the main PDA body, but in this case, we will use an invisibility
mask shape to hide the paint on this layer.
Make sure the current
layer is the plastic body layer that was painted with the texture brush.
- Choose Paint > Shape > Make Invisibility Mask Shape . You are prompted to select the
curves, then click Accept.
The image below shows how the invisibility mask
shape has hidden the paint inside the curves.
- In this example, this is not what we
want, so choose Edit > Invert Layer in the Canvas
The image above shows how the plastic paint
layer now only shows paint defined by the invisibility mask shape.
The advantage to this workflow is the paint will be automatically
hidden or shown as the curves are modified. If we had used a mask
layer and erased the paint with a brush, it would require a significant
amount of work to repair the layer.
Project painted details
on a simple model
From the Top view,
we can quickly project paint onto the top surface.
- Select the surface you want to project
- Open the option windows for Canvas > Project Sketch . This tool supports projection of
paint from a number of views and onto active or all surfaces.
- Change windows to the Perspective view
and open WindowDisplay > Hardware Shade ❒ to toggle shade on.
Hardware Shade has been dramatically
enhanced in terms of texture quality, speed and the ability to support
layered shaders with transparency.
- Turn on Layered Shader.
By default, layered shaders is turned off because it is more expensive
to calculate multiple levels of shading per pixel. But on most modern machines
with up-to-date graphics cards, the extra calculations should have
- Tumble the scene in real time to view
this very simple concept surface.
- At this stage you can reposition the
graphics, then update the sketch projection either using the menu
in the canvas layer editor or by repeating the sketch render process.