bounding box functions added
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@ -56,3 +56,26 @@ void bounding_box_calculate_polygon(GList *vertices, conv_generic_to_vector_2d_t
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box->vectors.upper_right.x = xmax;
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box->vectors.upper_right.y = ymax;
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}
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void bounding_box_update_box(union bounding_box *destination, union bounding_box *update)
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{
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if (!destination || !update)
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return;
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destination->vectors.lower_left.x = MIN(destination->vectors.lower_left.x,
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update->vectors.lower_left.x);
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destination->vectors.lower_left.y = MIN(destination->vectors.lower_left.y,
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update->vectors.lower_left.y);
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destination->vectors.upper_right.x = MAX(destination->vectors.upper_right.x,
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update->vectors.upper_right.x);
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destination->vectors.upper_right.y = MAX(destination->vectors.upper_right.y,
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update->vectors.upper_right.y);
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}
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void bounding_box_prepare_empty(union bounding_box *box)
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{
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box->vectors.lower_left.x = DBL_MAX;
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box->vectors.lower_left.y = DBL_MAX;
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box->vectors.upper_right.x = DBL_MIN;
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box->vectors.upper_right.y = DBL_MIN;
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}
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@ -39,5 +39,7 @@ union bounding_box {
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typedef void (*conv_generic_to_vector_2d_t)(void *, struct vector_2d *);
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void bounding_box_calculate_polygon(GList *vertices, conv_generic_to_vector_2d_t conv_func, union bounding_box *box);
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void bounding_box_update_box(union bounding_box *destination, union bounding_box *update);
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void bounding_box_prepare_empty(union bounding_box *box);
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#endif /* _BOUNDING_BOX_H_ */
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