Splitting polygons
Now you'll split one of the faces of the extruded shape into two parts. From these two parts, you'll
create the claw end of the hammerhead.
To split polygons and manipulate the foundation shape
1. Select Edit Polygons > Split Polygon Tool.
2. Click one of the top, narrow edges as shown.
3. Middle-drag the point roughly to the edge's midpoint. If you are a perfectionist, examine the Help
Line as you drag the point. When you see Percentage: 50%, the point is at the midpoint.
4. Click the bottom edge of the face and similarly drag the pointer to its midpoint. Press Enter
(Windows and Linux) or Return (Mac OS X) to divide the face into two.
.
5. Right-click the cube and select Vertex from the marking menu.
6. Select the vertices at the top and bottom of the edge that divides the two faces. (If the vertices
are hard to see, press 4 to select wireframe display mode.) Examine the object from several
camera views to make sure you haven't accidentally selected extra vertices.
7. Select Edit Polygons > Split Vertex. The reason for splitting the vertices is explained later.
8. Shift-select the two split faces. (To display the face centers, right-click the cube and select Face
from the marking menu.)
9. Select Edit Polygons > Extrude Face > . In the options window, open the Other Values section
and enter 6 for Divisions, then click the Extrude Face button. You may need to scroll the option
window to access the Divisions option.
A manipulator appears on one of the faces. Because two faces were selected when you selected
Extrude Face, the manipulator controls the extrusion of both faces.
10.Drag the blue arrow outward to extrude the faces to a length appropriate for a hammer claw.
When you extrude the faces, the length of the extruded surface will have six subdivisions rather
than the default single subdivision. With the extra subdivisions, it will be easier to modify the
extrusion into a claw shape in a later step.
11. Drag the red scale manipulator (the small cube) inward to narrow the blades, then drag the green
scale manipulator up to flatten the blades at their tips. (See the next figure.)
This creates the preliminary shape of the hammer's claw.
In a prior step, you split the vertices at the top and bottom of the edge that divided the two
faces. This created two additional, overlapping vertices at each split vertex (a total of six
vertices). The extra vertices were necessary to create a gap between the blades. Without the
extra vertices, the two blades would be a solid single blade.
If you had extruded each face individually to create the two blades, you would not have needed
to split the vertices to create the gap. However, it would have been harder to make the two
blades exactly the same length, width, depth, and so on.
When you extrude two or more faces at the same time, the manipulators influence both
identically. Symmetry is ensured.
Now you'll split one of the faces of the extruded shape into two parts. From these two parts, you'll
create the claw end of the hammerhead.
To split polygons and manipulate the foundation shape
1. Select Edit Polygons > Split Polygon Tool.
2. Click one of the top, narrow edges as shown.
3. Middle-drag the point roughly to the edge's midpoint. If you are a perfectionist, examine the Help
Line as you drag the point. When you see Percentage: 50%, the point is at the midpoint.
4. Click the bottom edge of the face and similarly drag the pointer to its midpoint. Press Enter
(Windows and Linux) or Return (Mac OS X) to divide the face into two.
.
5. Right-click the cube and select Vertex from the marking menu.
6. Select the vertices at the top and bottom of the edge that divides the two faces. (If the vertices
are hard to see, press 4 to select wireframe display mode.) Examine the object from several
camera views to make sure you haven't accidentally selected extra vertices.
7. Select Edit Polygons > Split Vertex. The reason for splitting the vertices is explained later.
8. Shift-select the two split faces. (To display the face centers, right-click the cube and select Face
from the marking menu.)
9. Select Edit Polygons > Extrude Face > . In the options window, open the Other Values section
and enter 6 for Divisions, then click the Extrude Face button. You may need to scroll the option
window to access the Divisions option.
A manipulator appears on one of the faces. Because two faces were selected when you selected
Extrude Face, the manipulator controls the extrusion of both faces.
10.Drag the blue arrow outward to extrude the faces to a length appropriate for a hammer claw.
When you extrude the faces, the length of the extruded surface will have six subdivisions rather
than the default single subdivision. With the extra subdivisions, it will be easier to modify the
extrusion into a claw shape in a later step.
11. Drag the red scale manipulator (the small cube) inward to narrow the blades, then drag the green
scale manipulator up to flatten the blades at their tips. (See the next figure.)
This creates the preliminary shape of the hammer's claw.
In a prior step, you split the vertices at the top and bottom of the edge that divided the two
faces. This created two additional, overlapping vertices at each split vertex (a total of six
vertices). The extra vertices were necessary to create a gap between the blades. Without the
extra vertices, the two blades would be a solid single blade.
If you had extruded each face individually to create the two blades, you would not have needed
to split the vertices to create the gap. However, it would have been harder to make the two
blades exactly the same length, width, depth, and so on.
When you extrude two or more faces at the same time, the manipulators influence both
identically. Symmetry is ensured.
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