README
¶
package draw
import "github.com/zeebo/rothko/draw"
package draw provides common types for the drawing packages.
Usage
type Canvas
type Canvas interface {
Set(x, y int, c Color)
Size() (w, h int)
}
Canvas is the type of things that can be drawn onto.
type Color
type Color struct {
R, G, B uint8
}
Color is a simple 8 bits per channel color.
type Column
type Column struct {
X, W int
Data []float64
ObsSec float64
}
Column represents a column to draw in a context. Data is expected to be sorted, non-empty, and contain typical floats (no NaNs/denormals/Inf/etc). Obs is the number of observations.
type RGB
type RGB struct {
Pix []uint8
Stride int
Width int
Height int
X, Y int
}
RGB is a byte compatabile implementation of image.RGBA, except with much less supporting code, and no alpha channel.
func NewRGB
func NewRGB(w, h int) *RGB
NewRGB contstructs an RGB with space for the width and height.
func (*RGB) AsImage
func (m *RGB) AsImage() *image.RGBA
func (*RGB) Raw
func (m *RGB) Raw(x, y int) []uint8
Raw returns the raw values at the pixel, including alpha channel. It can be mutated.
func (*RGB) Set
func (m *RGB) Set(x, y int, c Color)
Set stores the pixel values in the color to the coordinate at x and y. The top left corner is (0, 0).
func (*RGB) Size
func (m *RGB) Size() (w, h int)
Size returns the width and height of the RGB.
func (RGB) View
func (m RGB) View(x, y, w, h int) *RGB
View returns a view into the RGB.
Documentation
¶
Overview ¶
package draw provides common types for the drawing packages.
Index ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
This section is empty.
Types ¶
type Column ¶
Column represents a column to draw in a context. Data is expected to be sorted, non-empty, and contain typical floats (no NaNs/denormals/Inf/etc). Obs is the number of observations.
type RGB ¶
RGB is a byte compatabile implementation of image.RGBA, except with much less supporting code, and no alpha channel.
func (*RGB) Raw ¶
Raw returns the raw values at the pixel, including alpha channel. It can be mutated.
Source Files
Directories
¶
| Path | Synopsis |
|---|---|
|
package axis provides implementations of drawing rothko axes.
|
package axis provides implementations of drawing rothko axes. |
|
package colors provides some color maps for drawing.
|
package colors provides some color maps for drawing. |
|
package graph provides implementations of drawing rothko graphs.
|
package graph provides implementations of drawing rothko graphs. |
|
package heatmap provides implementations of drawing rothko heatmaps.
|
package heatmap provides implementations of drawing rothko heatmaps. |
|
package iosevka contains a basicfont.Face of the ascii range of the iosevka font face.
|
package iosevka contains a basicfont.Face of the ascii range of the iosevka font face. |
|
package key provides a way to draw a heatmap key
|
package key provides a way to draw a heatmap key |
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package observations provides drawing of an observations axis.
|
package observations provides drawing of an observations axis. |