| 摘要 |
A map display apparatus includes a view transformation matrix generation unit which generates a view transformation matrix, including four rows and four columns, for transforming a global coordinate of a three-dimensional object into a view coordinate system; a view transformation matrix change unit which (i) changes, to 0, (a) the value of the first row in the second column and (b) the value of the third row in the second column in the view transformation matrix, in the case where the coordinate transformation is executed by multiplying a coordinate with the view transformation matrix from the left side of the coordinate, and (ii) changes, to 0, (a) the value of the second row in the first column and (b) the value of the second row in the third column in the view transformation matrix, in the case where the coordinate transformation is executed by multiplying the coordinate with the view transformation matrix from the right side of the coordinate; and a view transformation unit which transforms the global coordinate into the view coordinate system using the changed view transformation matrix.
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