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File: usage.txt

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File: usage.txt
Role: Documentation
Content type: text/plain
Description: documentation
Class: PHP Circles Intersection
Find the intersection points between two circles
Author: By
Last change:
Date: 9 years ago
Size: 1,084 bytes
 

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USAGE: First, instantiate class: $sample_class = new IntersectionPointsOf2Circles($circle1_center_x, $circle1_center_y, $radius_of_circle1, $circle2_center_x, $circle2_center_y, $radius_of_circle2); It is possible to change circles later by calling setCircle1() and setCircle2 methods. $sample_class->setCircle1($circle1_center_x, $circle1_center_y, $radius_of_circle1); $sample_class->setCircle2($circle2_center_x, $circle2_center_y, $radius_of_circle2); You can check if two circles are same with getIfTheCirclesAreSame() method. $result = $sample_class->getIfTheCirclesAreSame(); //if the result is "true" then there are infinite points. Call getPoints() methot to get intersection points as array Returned array format: array( array('x' => "x coordinate of the point", 'y' => "y coordinate of the point" ), ...) Note: if 2 circles are same or there is no intersection points, getPoints() method will return an empty array. You can get distance between two circles centers using getDistance() method $distance = $sample_class->getDistance();