Radiant tutorial: Basic two and three point clipping
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Introduction:All clipping operations either truncate or split a brush along a user-defined plane. Two point clipping only allows axis-aligned planes which can be rather limiting in some situations. Three point clipping allows clipping on an arbitrary plane. This tutorial describes the application of two and three point clipping to create a simple archway comprising two buttressed support columns, a beam and two corner pieces. |
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Step 1:Set the grid size to 8, select the common/caulk texture and create a 64*64*192 brush. This will be a support column. Apply an 8 unit 45° chamfer to two vertical edges using two point clipping. Then, again using two point clipping, cut (2,1) gradients on the ends of the column. |
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Step 2:Create a 128*128*64 brush aligned with the column as shown below. Use two-point clipping to form the 45° corner piece. To make the beam, copy the column and rotate it in the x axis and align it with the corner piece. Select the end-face and extend the beam to 448 units. |
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Step 3:In this step three point clipping will be used to chamfer the corner piece. Switch to a four unit grid and place clipping points on three of the chamfer vertices. |
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Since the initial positions of the clipping points are only specified in two axes they are placed along the centre of brush. Swich to xy view and move the clipping points to the required position then cut the chamfer. Repeat for the other edge. |
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Step 4:The buttresses for support column are created in the same way that the corner pieces were. Starting with another 128*128*64 brush, use two point clipping to cut the angled faces. Chamfer the 45° edges using three point clipping as described in step 3. |
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Use two point clipping to chamfer the two vertical edges of the buttress. |
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Finally copy and paste the buttress, column and corner piece then flip in the y axis and align with the beam to complete the archway. |
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The archway is now ready to be textured and integrated into your map. Remember that features such as this archway should normally be built from detail brushes. |
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Copyright © 2008 Taiyo Rawle. This document is released under the terms of the Creative Commons Attribution-NonCommercial-Share Alike 3.0 Unported License, http://creativecommons.org/licenses/by-nc-sa/3.0/ |