Auto level of detail texture mapping for a software graphics engine

A method of selecting a texture map from a set of texture maps comprising:

• a) calculating texel coordinates based on a ΔU ORTHO value, a ΔV ORTHO value, a ΔU MAIN value, and a ΔV MAIN value;
• b) calculating an area bound by a plurality of texel coordinates by multiplying said ΔV MAIN value by said ΔU ORTHO value to produce a first product;
• and
• c) selecting a texture map based on said area.

A computer readable storage medium for storing an executable set of software instructions which, when inserted into a host computer system, is capable of controlling the operation of the host computer, said software instructions being operable to selecting a texture map from a plurality of texture maps, said software instructions including:

• means for calculating texel coordinates based on a ΔU ORTHO value, a. ΔV ORTHO value, a ΔU MAIN value, and a ΔV Main value;
• means for calculating an area bounded by a plurality of texel coordinates;
• and
• means for selecting a texture map based on said area.

A computer readable storage medium for storing an executable set of software instructions which, when inserted into a host computer system, is capable of controlling the operation of the host computer, said software instructions being operable to select a texture map from a plurality of texture maps, said software instructions including:

• means for calculating texel coordinates based on a ΔU ORTHO value, a ΔV ORTHO value, a ΔU MAIN value, and a ΔV MAIN value;
• means for calculating an area bounded by a plurality of texel coordinates by multiplying said ΔV MAIN value by said ΔU ORTHO value to produce a first product, said area corresponds to one of a plurality of ranges of area values;
• and
• means for selecting a texture map based on said area based on the particular range of values to which said area corresponds.

A method of selecting a texture map from a set of texture maps, comprising:

• (a) calculating texel coordinates based on an amount by which a first texel coordinate is adjusted in each step in x, an amount by which a second texel coordinate is adjusted in each step in x, an amount by which the first texel coordinate value is adjusted in each step in y, and an amount by which the second texel coordinate value is adjusted in each step in y;
• (b) calculating an area bounded by a plurality of texel coordinates;
• and
• (c) comparing said area to a range of area values;
• and
• (d) selecting a texture based step (c).

A method of selecting a texture map from a set of texture maps comprising:

• (a) calculating texel coordinates based on a ΔU ORTHO value, a ΔV ORTHO value, a ΔU MAIN value, and a ΔV MAIN value;
• (b) calculating an area bounded by a plurality of texel coordinates, wherein said area corresponds to one of a plurality of ranges of area values;
• and
• (c) selecting a texture map based on the particular range of values to which said area corresponds.

A method of selecting a texture map from a set of texture maps, comprising:

• (a) calculating texel coordinates based on an amount by which a first texel coordinate is adjusted in each step x, an amount by which a second texel coordinate is adjusted in each step in x, an amount by which the first texel coordinate value is adjusted in each step in y, and an amount by which the second texel coordinate value is adjusted in each step in y;
• (b) calculating an area bounded by a plurality of texel coordinates;
• and
• (c) comparing said area to a range of area values;
• and
• (d) selecting a texture based step (c).

A computer readable storage medium for storing an executable set of software instructions which, when inserted into a host computer system, is capable of controlling the operation of the host computer, said software instructions being operable to select a texture map from a plurality of texture maps, said software instructions including:

• means for calculating texel coordinates, which includes a means for calculating texel coordinates based on a ΔU ORTHO value, a ΔV ORTHO value, a ΔU MAIN value, and a ΔV MAIN value;
• means for calculating an area bounded by a plurality of texel coordinates;
• and
• means for selecting a texture map based on said area, wherein said area corresponds to one of a plurality of ranges of area values and said means for selecting a texture map includes a means for selecting a texture map based on the particular range of values to which said area corresponds.