Tutorial 2 – The hood

Catching up with Mike – without the video. This is going to be a long blog….
It was a bit hard to see exactly what Mike did on his video, but here is my interpretation.
1. Starting with the Extrude object tool – use the mouse to drag this onto the scene.


2. This starts up a new window with 4 panes. Click on the little vehicle icon and select the side elevation plan.
This tool is not the easiest thing to use, but the general idea is to draw the outline. Don’t worry if the image you’re using isn’t square, it will be scaled correctly afterwards.
I start with a click in the bottom left corner and click to add the first point above it.
The square at the end of the line appears white.
Click on the end of the square again so it turns blue – otherwise the extrude tool will do a bezier spline between all the points.
Basically just work your way around the section, making sure all the points are blue and that the X and Y coordinates match for vertical and horizontal lines. The points can be dragged around the scene and you can zoom in for fine adjustments.
The last point doesn’t need to be blue, it just needs to be placed exactly over the first point (the green one)
Finally add a horizontal line in one of the other panels to give the object some thickness.
Click on the save button and close the window to return to the main screen.
3. First I selected a 30% transparent blue material and used the fill tool.
The new object needs to be positioned and scaled – I select the face that is going to be along the centre line and run my shift centre operation (square with blue X button)
Note – the Extruded object was created in a group that is a child of the Main group.
I then set X value of the object position property to zero. (right click object/properties)
This should centre the edge of the object relative to the main object.
I can now change to 2 or 4 views (menu View/Selection). Using the orthogonal side view, use the position and scaling tool on the lower right of the window to make the object fit over the plan.
4. Switching to 4 view I can now select the outside face in the perspective view. With the "X" key held down, to restrict the movement to the X axis, I can now use the front/rear view drag tool (bottom right) to make the object the correct width. (My plan isn’t cropped correctly)
5. Next I select the 3 top outside edges (Hold down the ctrl key, use edge select tool on right) and drag down the Y axis of the object modify widget to put a slope on the engine hood.
6. I select the front vertical edge of the lights, I can hold down the Z key and use the top view to shift the edge back a bit to add the front angle over the headlights.
7. With the same 3 edges selected from 5, I run the chamfer operation. You need to watch this one – sometimes in 3DC, the points need adjusting. I had to move the highlighted point in the image below down a bit.
8. With more "modern" models I would probably select the 2 new edges and chamfer them again to give an even smoother curve.
9. Ditto with the front vertical edge. I had a similar problem with points after the chamfer and had to make a few adjustments (I can feel a new plugin coming on, possible with multiple chamfer options!)
10. Finally I had to flip the object on the X axis before mirroring it on the X axis as the mirror only works one way. (This also removes the internal face)
I also ran the consolidate operation to remove a few extra polys from the flat faces.
And here it is with a solid texture applied. Canvas does not use smoothing groups – instead, for an object, angles over a set value are smoothed automatically.
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  • Mike  On 15/11/2007 at 9:12 pm

    This is coming along well Paul.
    Thanks for doing this!

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