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以透视原理为依据作图的实质就是确定消失点,实际作图过程中,如果物体的位置先暂时不定,消失点的位置可以按设计者的意图任意确定。在一点透视中,确定直线长度距点也可以是设计者根据设计表达效果的需求任意确定;两点透视中确定直线长度的量点,其中一个是设计者根据表达效果的需求任意确定,另一个可以在立面图上用两段圆弧求出,方便、简单,解决了靠透视经验画图,靠记住透视规律验证的草图、效果图的问题。
The essence of mapping based on the principle of perspective is to determine the vanishing point. In the actual drawing process, the position of the vanishing point can be arbitrarily determined according to the designer’s intention if the position of the object is temporarily undefined. In one-point perspective, determining the length of a straight line can also be determined by the designer according to the requirements of the design expression effect. Two-point perspective determines the length of a straight line, one of which is determined by the designer according to the requirement of the expression effect, and the other Can be found on the elevation of two arcs, easy, simple, solved by the experience of drawing perspective, by relying on the law of perspective proof sketch, renderings.