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   <title>ppModeler: shark tutorial</title>
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<H1>Building a Shark</h1>
<img src="shark.gif"><br>
The common way of using <b>ppModeler</b> is starting with a simple primitive, 
and then moving vertices and adding details on the primitive.<br>
So, we start with a cube(<img src="../../i_cube.gif" align="middle">), 
with (1, 1, 1) subdivision along each axis.
Then we smooth it (<img src="../../i_smooth.gif" align="middle"> 
in the tools tool box) and scale it 8 times along the x axis 
(menu edit->scale x, y, z...).<br>
Before scaling, the result will look like : <br>
<img src="shark01.gif"><br>
Use the statistic to change the object name (menu options->statistics).
Save the scene, with the name shark00.3de.<br>
Now, we will give the basic form to our primitive.
Go to the vertex tool box (F5 or <img src="../../i_vertex.gif" align="middle">), 
and then select the front vertex (the one with the gretest x value).
Use the arrow keys and the x, y, z, f keys to choose a good point of view.
Bevel this vertex (<img src="../../i_pt_bvl.gif" align="middle">).<br>
Select the two horizontal vertices of the new created face and scale them
(<img src="../../i_ptscal.gif" align="middle">). 
This part will be the nose of the shark.<br>
The result is : <br>
<img src="shark02.gif"><br>
Select the top front edge by selecting its two vertices.<br>
<img src="shark03.gif"><br>
Cut it in three parts (<img src="../../i_edgcut.gif" align="middle">). 
Do the same for the two parallel edges of the top. Then, switch to 
the view all mode. Select the first added vertex of the center edge and 
the correponding vertex in the right edge. 
Add an edge between this two vertices(<img src="../../i_adedge.gif" align="middle">). 
Do the same for the second added vertex and then with the left edge.<br>
The result will look like this :<br>
<img src="shark04.gif"><br>
Move the top vertices in order to obtain the shark profil. This done only with the mouse.
Use the right mouse button to switch between select vertex tool and move vertex tool.<br>

Select the center vertices, and scale them.
Select the 4 top edges and cut them in 2 parts.
add edges.<br>
<img src="shark05.gif"><br>
Move the top edge.<br>
<img src="shark06.gif"><br>
select the back edge and cut it in 3 parts. Move the newly added vertices.<br>
<img src="shark07.gif"><br>
Select the vertices in the right face, and remove the edge.<br>
<img src="shark08.gif"><br>
add a small face of 30 %.<br>
<img src="shark09.gif"><br>
move the new face in its own plane.
extrude the face (10) and scale it (0.9).<br>
<img src="shark10.gif"><br>
extrude once more the end face (15) and scale it (0.5).
Move the end points of the fin.
<img src="shark11.gif"><br>
Select the back vertices move them and scale them.<br>
<img src="shark12.gif"><br>
<img src="shark13.gif"><br>
Cut in two parts the top edge.
move the new point.<br>
<img src="shark14.gif"><br>
add two edge.
Cut the back edge in 3 parts and the front in two. Then move the vertices.<br>
<img src="shark15.gif"><br>
Do the same for the bottom part.<br>
<img src="shark16.gif"><br>
<img src="shark17.gif"><br>
Cut with a plane, then miror.<br>
<img src="shark18.gif"><br>
Add the mouse :<br>
 cut the edge in 3 parts.<br>
<img src="shark19.gif"><br>
add the edges.<br>
<img src="shark20.gif"><br>
move the central edges.<br>
<img src="shark21.gif"><br>
Add eyes :<br>
<img src="shark22.gif"><br>
<img src="shark23.gif"><br>
<img src="shark24.gif"><br>
Rendering :
move the camera in (-100, -20, -200). Points the camera to the object.
add a light, raytrace.<br>
<img src="shark25.gif"><br>
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