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Modeling a Pumpkin in Hexagon

Author: CHWT

Tools Needed

* Hexagon

* A rendering program (e.g. DAZ Studio or Poser)

Support Files

*part1referencefiles.zip

Introduction

I will teach you how to model a cute pumpkin in Hexagon in this tutorial. It is expected that you have basic knowledge about 3D modeling and you are familiar with the user interface of Hexagon.

Step 1: Creating a sphere

Firstly, click “Sphere: create a sphere” under “3D Primitives” in the toolbar (pointed by the arrow in the following figure).

Then choose sphere type to be “Center” (pointed by the arrow in the following figure).

Click anywhere in the user interface to set the center. I usually have grid snap on by clicking “Display” from the menu bar, then click “Snap”.

Drag the mouse to set the radius of the sphere. Type of sphere is “Sphere with poles” (pointed by the arrow in the following figure). Click to confirm.

Set “Num points” equals 17. Press Enter key to confirm.

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Step 2: Reserving the place for the pumpkin stalk

Before shaping the pumpkin, we reserve a place for the pumpkin stalk.

Press F1 to activate “Select object” mode. Click the sphere.

Click “View” from the menu bar, then click “top view”.

Press F3 to activate “Select edges” mode. Hold the shift key while clicking to select the edges (highlighted in the following figure). Click “Vertex modeling” from the toolbar. Click “Edge tools” (pointed by the arrow in the following figure).

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Click “Extract edge along edge”. The user interface will be changed as follows.

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Click the white “Extract Along” triangle (pointed by the arrow in the following figure) and drag inwards.

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You will have a new “latitude” edge near the north pole.

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Step 3: Roughly shape the pumpkin

Continue to be in the top view, press F4 to activate “Select points” mode. To select vertices, right click and drag to select vertices with the red rectangular bound box that appears upon dragging.

Move alternate “longitudes” closer, say 0.8 units, towards the center. Select all the vertices of each “longitude” except the vertices at the north pole, south pole, and the vertex that also lies on the ring “latitude” created in Step 2, because we don't want to mess with the place reserved for the pumpkin stalk.

You can do this as the same way demonstrated by the following figure: first work on the “longitudes” pointed by the red arrows (except the vertices on each “longitude” that should be avoided, as I have just mentioned above), then rotate 22.5 degrees in the Y-axis (we have 32 “longitudes” so every two “longitudes” are 22.5 degrees apart) and work on the “longitudes” pointed by the blue arrows; rotate 22.5 degrees in the Y-axis and work on the “longitudes” pointed by the green arrows; then rotate and work on the “longitudes” pointed by the yellow arrows. This way you can always just drag the vertices along the X- and Z- axes directions. Simple.

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When you have finished you will come up with something like this.

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Step 4: Smooth the pumpkin

Still in the top view, press F1 to change to “Select object” mode. Click the star-shaped pumpkin :-)

Click “Surface modeling” from the toolbar. Click “Smooth” (pointed by the arrow in the following figure).

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Use the default setting of “Catmull-Clark subdivision” with range 2 (pointed by the arrows in the following figure).

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You now have a smoothed pumpkin.

Step 5: Fine-tune the pumpkin shape

Change to the front view (click “View” from the menu bar, then click “front view”). The smoothed “pumpkin” doesn't look like a pumpkin at all. It looks like the egg of an alien creature.

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We adjust the radius of the “latitudes”.

Press F4 to toggle to “Select points” mode. Right click and drag to select ALL vertices of particular “latitude” you want to work with, with the red rectangular bound box.

Click the “Scale Manipulator” (pointed by the arrow in the following figure).

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You can push or pull the handles of the scale manipulator, but I prefer directly typing in the sizes of the “latitude” along the X- and Z-axes (pointed by the arrows in the following figure) to ensure that they are the same, i.e., the “latitude” is uniformly rescaled.

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After some tweaking, you will come up with something like this:

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Starting to look like a pumpkin, doesn't it? ;-)

Step 6: Continue to fine-tune the shape

I also move the south and north poles towards the center slightly.

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If you are happy with the shape of your pumpkin, export it to OBJ format (click “File”, then click “Export”). I have exported it pumpkin_6.obj with the following settings.

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Step 7: A summary for Part 1

Later we will work on pumpkin_6.obj to finish our modeling task. I have included the .hxn files for the end results of Step 1 to 6 and pumpkin_6.obj for your reference.

I hope you enjoy Part 1 of my tutorial. After a short break we will move on to Part 2: “Halloween Pumpkin in Hexagon”. See you there :-)