Geometric.js

A JavaScript library for doing geometry.

Angle of Reflection

Angle of Reflection example screenshot

Bounding Box example screenshot

Circles, Angles, and Right Triangles

Circles, Angles, and Right Triangles example screenshot

Convex Hull example screenshot

Discovering Pi With Monte Carlo

Discovering Pi With Monte Carlo example screenshot

Does a Polygon Intersect Another Polygon?

Does a Polygon Intersect Another Polygon? example screenshot

Geometric.js Logo

Interpolate Along a Line

Interpolate Along a Line example screenshot

Interpolate Along a Polygon

Interpolate Along a Polygon example screenshot

Is a Point in a Polygon?

Is a Point in a Polygon? example screenshot

Is a Point Left of, Right of, or on a Line?

Is a Point Left of, Right of, or on a Line? example screenshot

Is a Point on a Line?

Is a Point on a Line? example screenshot

Is a Point on a Polygon?

Is a Point on a Polygon? example screenshot

Is a Polygon Inside Another Polygon?

Is a Polygon Inside Another Polygon? example screenshot

Line Intersection

Line Intersection example screenshot

Line Intersection of a Polygon

Line Intersection of a Polygon example screenshot

Make a Random Convex Polygon

Make a Random Convex Polygon example screenshot

Make a Regular Polygon

Make a Regular Polygon example screenshot

Mean Center Vs. Centroid

Mean Center Vs. Centroid example screenshot

Measure the Perimeter of a Polygon

Measure the Perimeter of a Polygon example screenshot

Measuring Distances In Pixels

Measuring Distances In Pixels example screenshot

Point to Line example screenshot

Point to Polygon

Point to Polygon example screenshot

Polygon Boolean Operations

Polygon Boolean Operations example screenshot

Polygon Winding

Polygon Winding example screenshot

Reflect a Polygon Horizontally

Reflect a Polygon Horizontally example screenshot

Reflect a Polygon Vertically

Reflect a Polygon Vertically example screenshot

Rotate a Line example screenshot

Rotate A Point About An Origin

Rotate A Point About An Origin example screenshot

Rotate a Polygon

Rotate a Polygon example screenshot

Scale a Polygon

Scale a Polygon example screenshot

Scale a Polygon Horizontally

Scale a Polygon Horizontally example screenshot

Scale a Polygon Vertically

Scale a Polygon Vertically example screenshot

Scale a Polygon’s Area

Scale a Polygon’s Area example screenshot

Talking Heads example screenshot

Translate a Line

Translate a Line example screenshot

Translate a Polygon

Translate a Polygon example screenshot

Angle of Reflection

Angle of Reflection example screenshot

Bounding Box example screenshot

Circles, Angles, and Right Triangles

Circles, Angles, and Right Triangles example screenshot

Convex Hull example screenshot

Discovering Pi With Monte Carlo

Discovering Pi With Monte Carlo example screenshot

Does a Polygon Intersect Another Polygon?

Does a Polygon Intersect Another Polygon? example screenshot

Geometric.js Logo

Interpolate Along a Line

Interpolate Along a Line example screenshot

Interpolate Along a Polygon

Interpolate Along a Polygon example screenshot

Is a Point in a Polygon?

Is a Point in a Polygon? example screenshot

Is a Point Left of, Right of, or on a Line?

Is a Point Left of, Right of, or on a Line? example screenshot

Is a Point on a Line?

Is a Point on a Line? example screenshot

Is a Point on a Polygon?

Is a Point on a Polygon? example screenshot

Is a Polygon Inside Another Polygon?

Is a Polygon Inside Another Polygon? example screenshot

Line Intersection

Line Intersection example screenshot

Line Intersection of a Polygon

Line Intersection of a Polygon example screenshot

Make a Random Convex Polygon

Make a Random Convex Polygon example screenshot

Make a Regular Polygon

Make a Regular Polygon example screenshot

Mean Center Vs. Centroid

Mean Center Vs. Centroid example screenshot

Measure the Perimeter of a Polygon

Measure the Perimeter of a Polygon example screenshot

Measuring Distances In Pixels

Measuring Distances In Pixels example screenshot

Point to Line example screenshot

Point to Polygon

Point to Polygon example screenshot

Polygon Boolean Operations

Polygon Boolean Operations example screenshot

Polygon Winding

Polygon Winding example screenshot

Reflect a Polygon Horizontally

Reflect a Polygon Horizontally example screenshot

Reflect a Polygon Vertically

Reflect a Polygon Vertically example screenshot

Rotate a Line example screenshot

Rotate A Point About An Origin

Rotate A Point About An Origin example screenshot

Rotate a Polygon

Rotate a Polygon example screenshot

Scale a Polygon

Scale a Polygon example screenshot

Scale a Polygon Horizontally

Scale a Polygon Horizontally example screenshot

Scale a Polygon Vertically

Scale a Polygon Vertically example screenshot

Scale a Polygon’s Area

Scale a Polygon’s Area example screenshot

Talking Heads example screenshot

Translate a Line

Translate a Line example screenshot

Translate a Polygon

Translate a Polygon example screenshot

Angle of Reflection

Angle of Reflection example screenshot

Bounding Box example screenshot

Circles, Angles, and Right Triangles

Circles, Angles, and Right Triangles example screenshot

Convex Hull example screenshot

Discovering Pi With Monte Carlo

Discovering Pi With Monte Carlo example screenshot

Does a Polygon Intersect Another Polygon?

Does a Polygon Intersect Another Polygon? example screenshot

Geometric.js Logo

Interpolate Along a Line

Interpolate Along a Line example screenshot

Interpolate Along a Polygon

Interpolate Along a Polygon example screenshot

Is a Point in a Polygon?

Is a Point in a Polygon? example screenshot

Is a Point Left of, Right of, or on a Line?

Is a Point Left of, Right of, or on a Line? example screenshot

Is a Point on a Line?

Is a Point on a Line? example screenshot

Is a Point on a Polygon?

Is a Point on a Polygon? example screenshot

Is a Polygon Inside Another Polygon?

Is a Polygon Inside Another Polygon? example screenshot

Line Intersection

Line Intersection example screenshot

Line Intersection of a Polygon

Line Intersection of a Polygon example screenshot

Make a Random Convex Polygon

Make a Random Convex Polygon example screenshot

Make a Regular Polygon

Make a Regular Polygon example screenshot

Mean Center Vs. Centroid

Mean Center Vs. Centroid example screenshot

Measure the Perimeter of a Polygon

Measure the Perimeter of a Polygon example screenshot

Measuring Distances In Pixels

Measuring Distances In Pixels example screenshot

Point to Line example screenshot

Point to Polygon

Point to Polygon example screenshot

Polygon Boolean Operations

Polygon Boolean Operations example screenshot

Polygon Winding

Polygon Winding example screenshot

Reflect a Polygon Horizontally

Reflect a Polygon Horizontally example screenshot

Reflect a Polygon Vertically

Reflect a Polygon Vertically example screenshot

Rotate a Line example screenshot

Rotate A Point About An Origin

Rotate A Point About An Origin example screenshot

Rotate a Polygon

Rotate a Polygon example screenshot

Scale a Polygon

Scale a Polygon example screenshot

Scale a Polygon Horizontally

Scale a Polygon Horizontally example screenshot

Scale a Polygon Vertically

Scale a Polygon Vertically example screenshot

Scale a Polygon’s Area

Scale a Polygon’s Area example screenshot

Talking Heads example screenshot

Translate a Line

Translate a Line example screenshot

Translate a Polygon

Translate a Polygon example screenshot