Returns the area of a triangle described by 3 points.

Returns the double area of a triangle. This is the fastest way to get a comparison or sorting value for the areas of triangles. This is just the absolute value of the 2D Cross Product.

Returns the signed area of a triangle. If the result is positive, the points are in counter-clockwise order.

Returns the determinant (2D cross product), i.e., the signed double area of a triangle. If the result is positive, the points are in counter-clockwise order.

Checks if three points are in one line. By finding the biggest angle in the triangle. And then measuring the distance from this point to the line defined by the other two points.

Checks if three points are in one line. This is a very fast check, but it is hard to find an appropriate tolerance. (Default is 0.001) This tolerance is the area of the parallelogram described by two vectors created from the 3 points. So it also returns true if the points are equal or very close to each other. Returns false for NaN input values. Use Points.areInLine if you need better control over the actual tolerance distance.

Offsets all points by a given distance. If the points are in counter-clockwise order, the offset is inwards. Otherwise it is outwards. A negative offset distance inverts the direction.

Offsets one point by a given distance. If the points 'prev', 'this' and 'next' are in counter-clockwise order, the offset is inwards. Otherwise it is outwards. A negative offset distance inverts the direction.

Finds the offset point based on the previous and next points, and their offset distances. A positive offset distance will be to the left side of the line from 'prev' to 'ptToOffset'. A negative offset distance inverts the direction. This function use Tria2D.offsetVarByNormals(..) internally.

Finds the offset point based on the previous and next unit normals (= offset direction), and their offset distances. This is the core function for offsetting variable. it is used by Tria2D.offsetVar(..).