同一街谷的指定时段阴影

提示词

依据给定日照或阴影参考表达指定时段的街谷明暗，影线跨街延续并对应原建筑高度，不凭效果图自行计算遮挡时长。

Use the supplied solar or shadow reference to depict a street canyon at the stated time, aligning shadow boundaries with building heights without calculating shading duration from a rendering.