| 摘要 |
A game system, program and image generating method which can effectively generate an image of an edge line in a more natural manner are provided. The image of an edge line EDL of an object OB is drawn in an inside area of an edge of the object OB. The object is translucent-synthesized with the edge line with a translucency determined depending on the distance from the viewpoint or the size of the perspectively transformed object. A Z-value of the object in a position where the edge line is to be drawn is set as the Z-value of the edge line. A mapping image is mapped on a virtual polygon through the bi-linear filtering method while shifting a texture coordinate in the first or second direction, thereby drawing the edge line of the object. A virtual polygon is generated such that it encloses the image of the perspectively transformed object and has a size variable depending on the size of the perspectively transformed object. An alpha value set in the inside area of the edge of the object is different from an alpha value set in the outside area thereof. The edge line region in the inside area of the edge of the object is detected based on the alpha value that has been subjected to the texel interpolation.
|
