Abstract:
An image generation method includes: generating a two-dimensional image by perspectively transforming a virtual three-dimensional space relative to a predetermined viewpoint at a given instant; determining a corresponding position to a representative point of a waterdrop on the two-dimensional image depending on a position at which the waterdrop exists in the virtual three-dimensional space or a position at which the waterdrop is to be displayed in a display image; determining a reference position on the two-dimensional image corresponding to a vertex or a configuration point which forms the waterdrop, by using reference information relative to the corresponding position to the representative point on the two-dimensional image, the reference information being previously determined for the vertex or the configuration point forming the waterdrop; and linking the determined reference position with the vertex or the configuration point forming the waterdrop and mapping at least a portion of the two-dimensional image onto the waterdrop to generate an image of the waterdrop at a given instant or in a frame proximate to the instant.
Abstract:
An image generation system, program, and information storage medium can realistically represent reflection of light on a given object or topographic surface with a reduced computation load. The image generation system includes a section which assigns, to a given object or topographic surface disposed in a virtual three-dimensional space, a virtual object which has at least one of nonuniform brightness or color and is used for representing a light reflection effect on the object or topographic surface; a section which determines a position of the virtual object so that the virtual object moves to follow a virtual camera or player's character, and disposes the virtual object at the determined position; and a section which generates an image of the virtual three-dimensional space viewed from the virtual camera by performing translucent blending processing of the object or topographic surface and the virtual object assigned to the object or topographic surface.