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Adds the ability to draw an XY scatter plot. (#27)

Browse source 
* works more or less

* updating comment

* removing debugging printf

* adding output

* tweaks

* missed a couple series validations

* testing auto coloring

* updated output.png

* color tests etc.

* sanity check tests.

* should not use unkeyed fields anyway.
This commit is contained in:
Will Charczuk 2017-03-05 16:54:40 -08:00 • committed by GitHub
parent 17b28beae8
commit b713ff85cc
22 changed files with 511 additions and 72 deletions
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29
box.go
View file

@ -5,16 +5,36 @@ import (
"math"
)
var (
// BoxZero is a preset box that represents an intentional zero value.
BoxZero = Box{IsSet: true}
)
// NewBox returns a new (set) box.
func NewBox(top, left, right, bottom int) Box {
return Box{
IsSet: true,
Top: top,
Left: left,
Right: right,
Bottom: bottom,
}
}
// Box represents the main 4 dimensions of a box.
type Box struct {
Top int
Left int
Right int
Bottom int
IsSet bool
}
// IsZero returns if the box is set or not.
func (b Box) IsZero() bool {
if b.IsSet {
return false
}
return b.Top == 0 && b.Left == 0 && b.Right == 0 && b.Bottom == 0
}
@ -25,7 +45,7 @@ func (b Box) String() string {
// GetTop returns a coalesced value with a default.
func (b Box) GetTop(defaults ...int) int {
if b.Top == 0 {
if !b.IsSet && b.Top == 0 {
if len(defaults) > 0 {
return defaults[0]
}
@ -36,7 +56,7 @@ func (b Box) GetTop(defaults ...int) int {
// GetLeft returns a coalesced value with a default.
func (b Box) GetLeft(defaults ...int) int {
if b.Left == 0 {
if !b.IsSet && b.Left == 0 {
if len(defaults) > 0 {
return defaults[0]
}
@ -47,7 +67,7 @@ func (b Box) GetLeft(defaults ...int) int {
// GetRight returns a coalesced value with a default.
func (b Box) GetRight(defaults ...int) int {
if b.Right == 0 {
if !b.IsSet && b.Right == 0 {
if len(defaults) > 0 {
return defaults[0]
}
@ -58,7 +78,7 @@ func (b Box) GetRight(defaults ...int) int {
// GetBottom returns a coalesced value with a default.
func (b Box) GetBottom(defaults ...int) int {
if b.Bottom == 0 {
if !b.IsSet && b.Bottom == 0 {
if len(defaults) > 0 {
return defaults[0]
}
@ -91,6 +111,7 @@ func (b Box) Aspect() float64 {
// Clone returns a new copy of the box.
func (b Box) Clone() Box {
return Box{
IsSet: b.IsSet,
Top: b.Top,
Left: b.Left,
Right: b.Right,