draw2d/line.go

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// Copyright 2010 The draw2d Authors. All rights reserved.
// created: 21/11/2010 by Laurent Le Goff
package draw2d
type LineMarker byte
const (
LineNoneMarker LineMarker = iota
// Mark the current point of the line as a join to it can draw some specific join Bevel, Miter, Rount
LineJoinMarker
)
type LineBuilder interface {
NextCommand(cmd LineMarker)
// MoveTo Start a New line from the point (x, y)
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MoveTo(x, y float64)
// LineTo Draw a line from the current position to the point (x, y)
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LineTo(x, y float64)
// Close add the most recent starting point to close the path to create a polygon
Close()
// End mark the current line as finished so we can draw caps
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End()
}
type LineBuilders struct {
builders []LineBuilder
}
func NewLineBuilders(builders ...LineBuilder) *LineBuilders {
return &LineBuilders{builders}
}
func (dc *LineBuilders) NextCommand(cmd LineMarker) {
for _, converter := range dc.builders {
converter.NextCommand(cmd)
}
}
func (dc *LineBuilders) MoveTo(x, y float64) {
for _, converter := range dc.builders {
converter.MoveTo(x, y)
}
}
func (dc *LineBuilders) LineTo(x, y float64) {
for _, converter := range dc.builders {
converter.LineTo(x, y)
}
}
func (dc *LineBuilders) Close() {
for _, converter := range dc.builders {
converter.Close()
}
}
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func (dc *LineBuilders) End() {
for _, converter := range dc.builders {
converter.End()
}
}