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室内立面阴影作图法 在室内立面图(图1)上施加阴影,能增加墙面构图的立体感,使图样更富有表现力,造成鲜明的浮凹效果。 在正投影图中作阴影的常用光线,是从左、上、前至右、下、后的平行光线,它与三个投影面的倾角a=tan~(-1)1/2~(1/2)=sin~(-1)1/3~(1/2)=35°,它的投影与投影轴的夹角皆为45°。 作图时,先在平面图上,利用直角等腰三角板作图形轮廓线交点的45°线的落影迹点,并通过此迹点的垂线投影到立面图上,与相应轮廓交点的
Interior facade shadow mapping method Applying a shadow on the interior facade (Figure 1) can increase the three-dimensional impression of the wall surface composition, make the pattern more expressive, resulting in a clear concave and convex effect. The commonly used rays for shadowing in orthographic projections are the parallel rays from the left, top, front to the right, bottom, and back, and the tilt angles of the three projection planes are a=tan~(-1)1/2~(1). /2) = sin ~ (-1) 1/3 ~ (1/2) = 35 °, and the angle between its projection and the projection axis is 45 °. When drawing, first use the right-angle isosceles triangle plate as the landing point of the 45° line of the intersection point of the figure contour line on the plan view, and project the vertical line of this point point to the elevation map and intersect with the corresponding contour.