Image processing apparatus, image processing method, and program

An image processing method comprising:

• acquiring a position of a first tetrahedron and a position of a second tetrahedron in a virtual space;
• acquiring a separational axis extending in a direction from the first tetrahedron to the second tetrahedron;
• projecting a vertex of the first tetrahedron and a vertex of the second tetrahedron on the separational axis and selecting a calculation technique for a contact point on a basis of an order in which the projected vertex of the first tetrahedron and vertex of the second tetrahedron align on the separational axis;
• calculating one or a plurality of contact points between the first tetrahedron and the second tetrahedron by the selected calculation technique;
• and
• drawing an image on the basis of the calculated contact point.

A non-transitory computer readable medium having stored thereon a program for a computer, the program comprising:

• by a position acquisition section, acquiring a position of a first tetrahedron and a position of a second tetrahedron in a virtual space;
• by a separational axis acquisition section, acquiring a separational axis extending in a direction from the first tetrahedron to the second tetrahedron;
• by a technique selection section, projecting a vertex of the first tetrahedron and a vertex of the second tetrahedron on the separational axis and selecting a calculation technique for a contact point on a basis of an order in which the projected vertex of the first tetrahedron and vertex of the second tetrahedron align on the separational axis;
• by a contact point calculation section, calculating one or a plurality of contact points between the first tetrahedron and the second tetrahedron by the selected calculation technique;
• and
• by an image drawing section, drawing an image on the basis of the calculated contact point.