Friday, 3 February 2012

3Ds MAX – Extrude Along Spline



This is a useful technique I have learnt which is especially helpful when creating trees models. First of all I create a tall cylinder which will be the trunk of my tree.


 I then go to Create - Objects and select the line tool. Go to the Top view port and create a line of four vertex points in a rough shape and direction I want for the roots of my tree. I then go back to the Perspective view and adjust the vertex points again.



 As you can see I move the line so that it touches the model and is roughly in-between two polygons. I then select these two polygons and select Extrude Along Spline (I click the menu button for this function which is a small small square that is next to the functions name) and select Pick Spline, then I select the line I had created that is touching the selected polygons. Polygons now extrude from the cylinder model along the line. I then adjust the Segments, Taper Amount and Taper Curve opens in the Extrude Polygons Along Spline menu accordingly to get the effect of a tree root.



By using this technique many times over on this model, adjusting the options of the Extrude Polygons Along Spline menu for each extrude to add variety I can create a basic complex tree model within minutes. Below is the final result after half an hour.



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