coord

package
v0.0.8 Latest Latest
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 Go to latest Published: May 24, 2026 License: MIT Imports: 1 Imported by: 0

Documentation

Overview

Package coord defines coordinate systems that control how data positions are mapped to the 2D plotting surface.

Index

Constants

This section is empty.

Variables

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Functions

This section is empty.

Types

type Coord 

type Coord interface {
	// Transform maps normalized (x, y) ∈ [0,1]² to pixel coordinates
	// within the data area of dimensions (width, height).
	Transform(x, y, width, height float64) (px, py float64)

	// String returns a human-readable label.
	String() string
}

Coord transforms scaled data positions (in [0,1] normalized space) into plot-surface positions.

func Cartesian 

func Cartesian() Coord

Cartesian returns the default Cartesian coordinate system. x maps to horizontal (left→right), y maps to vertical (bottom→top).

func Polar 

func Polar() Coord

Polar returns a polar coordinate system where x maps to angle (theta, 0→2π) and y maps to radius (0→1). Center is at (w/2, h/2).

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