| 摘要 |
PURPOSE:To obtain the computer graphics screen having a higher attendance sense by determining a Z coordinate value or/and a luminance value related to the point of the inside of a viewing conversion triangle. CONSTITUTION:First of all, a triangle displayed on a computer graphics screen is subjected to viewing conversion. Also, with regard to the point of the inside of a viewing conversion triangle, a reverse viewing conversion is executed, and to which point of the inside of the triangle before the viewing conversion it corresponds is derived. Subsequently, from the Z coordinate value and the luminance value of this corresponding point, the Z coordinate value and the luminance value related to the point of the inside of the viewing conversion triangle are determined. In such a way, the inside of the viewing conversion triangle is painted out smoothly. Accordingly, since a linear interpolation is discontinued and the Z coordinate value and the luminance value of the point of the inside of the viewing conversion triangle are determined, these values can exactly be derived, and the computer graphics screen whose attendance sense is satisfactory can be obtained. |
