models

type Canvas ¶

type Canvas struct {
	Length   int        // First dimension
	Width    int        // Second dimension
	Elements []*Element // Canvas data
}

Canvas descrbes a patchwork that consists of samples and can be rendered. Here comes coordinates structure

   X  0  1  2  |
Y  +-----------+----
0  |  0  1  2  | ^
1  |  3  4  5  | | LENGTH=4
2  |  6  7  8  | |
3  |  9 10 11  | V
   +-----------+---
   |< WIDTH=3 >|

func (c *Canvas) Compose(cmp Composer, samples []Sample) error

func (c *Canvas) IndexForXY(x, y int) (int, error)

func (c *Canvas) Render(r Renderer) ([]byte, error)

func (c *Canvas) XYforIndex(i int) (int, int, error)

type Composer ¶

type Composer interface {
	Compose(*Canvas, []Sample) error
	Seed(int64)
}

Composer composes a canvas out of samples by chosing them and placing in some order

type Element ¶

type Element struct {
	Rotation int // 0-3 means multiplication per 90 degree clockwise
	Sample   Sample
}

Element describes a sample placed in a canvas

type Renderer ¶

type Renderer interface {
	Render(*Canvas) ([]byte, error)
}

Renderer renders a canvas into specific format

type Sample ¶

type Sample interface {
	Image() image.Image // Image data
	ID() string         // An identifier that allows to compare samples
}

Sample defines an cloth sample that patchwork is made of