差别
这里会显示出您选择的修订版和当前版本之间的差别。
| 两侧同时换到之前的修订记录 前一修订版 | |||
| 直骨架的研究:introduction:preliminaries_and_definitions:roof_and_terrain_model [2025/09/25 11:49] – 张叶安 | 直骨架的研究:introduction:preliminaries_and_definitions:roof_and_terrain_model [2025/09/25 11:50] (当前版本) – 张叶安 | ||
|---|---|---|---|
| 行 26: | 行 26: | ||
| 观察 1.7 ([AAAG95, AA98])[NT2].直线骨架 S (G) 是 T (G) 的谷和脊在平面 $R2 × {0}$ 上的投影。此外,谷对应于凹弧,脊对应于凸弧。 | 观察 1.7 ([AAAG95, AA98])[NT2].直线骨架 S (G) 是 T (G) 的谷和脊在平面 $R2 × {0}$ 上的投影。此外,谷对应于凹弧,脊对应于凸弧。 | ||
| + | |||
| + | {{.: | ||
| Figure 3: The straight skeleton S(G) (blue) of the planar straight-line graph $G$ (bold). The wavefronts at three points in time are depicted in gray. | Figure 3: The straight skeleton S(G) (blue) of the planar straight-line graph $G$ (bold). The wavefronts at three points in time are depicted in gray. | ||
| 图3:平面直线图$G$(粗体)的直骨架S(G)(蓝色)。以灰色描绘了三个时间点的波前。 | 图3:平面直线图$G$(粗体)的直骨架S(G)(蓝色)。以灰色描绘了三个时间点的波前。 | ||
| + | |||
| + | {{.: | ||
| Figure 4: The terrain T (G) of the graph $G$ which is illustrated in Figure 3. The ridges and valleys are in blue. | Figure 4: The terrain T (G) of the graph $G$ which is illustrated in Figure 3. The ridges and valleys are in blue. | ||