Web site design - 954Part VCase StudiesListing 48-2(continued) $center_x_left = $default_center_x_left; $center_x_right
954Part VCase StudiesListing 48-2(continued) $center_x_left = $default_center_x_left; $center_x_right = $default_center_x_right; $left_fill_x = $center_x_left; $right_fill_x = $center_x_right; $intersection_fill_x = -1; } else if (($intersection_area < $area_left_side) && ($intersection_area < $area_right_side)) { // The complicated case --- we must decide where the// circle centers should be so that the overlap is// proportional to the set intersection// First, we call a function that decides how far apart// the circle centers need to be. $center_distance = find_center_distance($radius_left_side, $radius_right_side, $intersection_area, $CENTER_FINDING_ITERATIONS); // Once we know the distance, we place the circle centers// approximately in the middle of the image$center_x_left = $middle_x // left/right middle of image- ($center_distance * ($radius_left_side / ($radius_left_side + $radius_right_side))); $center_x_right = $middle_x // left/right middle of image+ ($center_distance * ($radius_right_side / ($radius_left_side + $radius_right_side))); // we have decided the sizes and centers of the circles. // Now, we must determine good points to start a // flood fill coloring of the three different regions$left_fill_x = (($center_x_left - $radius_left_side) + ($center_x_right - $radius_right_side)) / 2.0; $right_fill_x = (($center_x_left + $radius_left_side) + ($center_x_right + $radius_right_side)) / 2.0; $intersection_fill_x = (($center_x_right - $radius_right_side) + ($center_x_left + $radius_left_side)) / 2.0;
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