Module piston_window::math

Various methods for computing with vectors.

Functions

abs_transform	Transforms from normalized to absolute coordinates.
add	Adds two vectors.
area	Computes area of a simple polygon.
area_centroid	Computes the area and centroid of a simple polygon.
cast	Converts to another vector type.
centroid	Computes centroid of a simple polygon.
cross	Computes the cross product.
dot	Computes the dot product.
from_barycentric	Transforms from barycentric coordinates to cartesian.
get_scale	Extract scale information from matrix.
hsv	Transform color with hue, saturation and value.
identity	Create an identity matrix.
inside_triangle	Returns true if point is inside triangle.
least_separation_4	Returns the least separation out of four. Each seperation can be computed using separation function. The separation returned can be used to solve collision of rectangles.
line_side	Returns a number that tells which side it is relative to a line.
modular_offset	Computes modular offset safely for numbers.
mul	Multiplies two vectors component wise.
mul_scalar	Multiplies the vector with a scalar.
multiply	Multiplies two matrices.
orient	Orients x axis to look at point.
overlap_rectangle	Computes overlap between two rectangles. The area of the overlapping rectangle is positive. A shared edge or corner is not considered overlap.
perp	Creates a perpendicular vector.
relative_rectangle	Computes a relative rectangle using the rectangle as a tile.
relative_source_rectangle	Computes a relative source rectangle using the source rectangle as a tile.
rotate_radians	Creates a rotation matrix.
scale	Create a scale matrix.
separation	Compute the shortest vector from point to ray. A ray stores starting point and directional vector.
shear	Create a shear matrix.
square_len	Computes the square length of a vector.
sub	Subtracts 'b' from 'a'.
to_barycentric	Transforms from cartesian coordinates to barycentric.
transform_pos	Transforms a 2D position through matrix.
transform_vec	Transforms a 2D vector through matrix.
translate	Creates a translation matrix.
triangle_face	Returns true if triangle is clockwise.

Type Definitions

Vec3d

The type used for 3D vectors.