Two Simple Methods of Drawing Perspective Drawing by Measuring Point Method

When the two-point perspective is drawn manually by the point-of-use method, it is often difficult to draw due to the large vanishing point of the map and the viewpoint falling outside the drawing board. Two simple mapping methods for scaling the viewing triangle or reversing the coincident viewpoint are proposed. It can effectively save the vertical drawing space, make the drawing surface full, the drawing is effectively used, the drawing is simple, and the perspective display effect is improved. The two methods are applied and verified by basic three-dimensional and architectural examples. The results show that the drawing is simple, and the method is effective.