Editing Brush
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A brush can be made to represent anything from solid matter (metal, dirt, wood, etc.) to liquids (lava, water, etc.) depending on the textures and materials applied to them. | A brush can be made to represent anything from solid matter (metal, dirt, wood, etc.) to liquids (lava, water, etc.) depending on the textures and materials applied to them. | ||
− | Brush is constructive solid geometry (CSG) | + | Brush is constructive solid geometry (CSG). It uses a form made of its sides and a volume which is anyting inside. CSG brushes are presented in Unreal Engine (1/2/3), Torgue engine, Cryengine 3. Hammer (native editor for Source engine games) is using it too. CSG is popular because a modeler can use a set of relatively simple objects to create very complicated geometry. User can revise their complex geometry by changing the position of objects or by changing brush attributes. |
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== Shape == | == Shape == | ||
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* If sliced by the plane of any of its sides, the whole brush will be on one side of the plane | * If sliced by the plane of any of its sides, the whole brush will be on one side of the plane | ||
− | {{Important|Radiant have tools to | + | {{Important|If modifying brush shape, all these rules must be followed. Radiant have tools to move/transform brush vertexes, sides and planes. If you apply transformation that will lead to CSG rules breakage, resulting brush will become invalid. For most cases Radiant does not allow you to do that.}} |
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− | [[File:Brush rules.jpg| | + | [[File:Brush rules.jpg|600px]] |
== Texturing == | == Texturing == |