RAPID PROTOTYPING METHOD AND DEVICE

The invention relates to a method for producing a product, in which the following steps are performed for each working point (11, 30) for which it is to be determined whether the point is inside or outside an object typically corresponding to the product to be produced or to a part (layer, slice) of the product to be produced, namely: determining at least one line (12) from between a line passing through the working point (11; 30) with which is associated a counter dedicated solely to the working point and a line passing through an image (31) of the working point with which image is associated a counter dedicated solely to this image of the working point; on each of the elementary surfaces, (i) searching for an intersection between the elementary surface (15) and one of the lines from the line (12) passing through the working point (11; 30) and the line passing through the image of the working point (31) and (ii) modifying the counter if the intersection exists, steps (i) and (ii) being ...