9.1 Representation Techniques 表現(xiàn)方法9.2 Lines and Rays 直線(xiàn)和射線(xiàn) 9.2.2 Special 2D Representations of Lines 直線(xiàn)的特殊2D表達(dá) 9.2.3 Converting between Representations 表達(dá)轉(zhuǎn)換 9.3 Spheres and Circles 球和圓9.4 Bounding Boxes 邊界盒/包圍盒9.5 Planes 平面
9.6 Triangles
三角形
9.6.1 Notation 表示符號(hào)9.6.2 Area of a Triangle 面積9.6.3 Barycentric Space 質(zhì)心空間 9.6.4 Calculating Barycentric Coordinates 計(jì)算質(zhì)心空間坐標(biāo)9.6.5 Special Points 特殊點(diǎn)9.7 Polygons 多邊形