34 lines
965 B
Go
34 lines
965 B
Go
package main
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import (
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"github.com/mediocregopher/ginger/gim/geo"
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"github.com/mediocregopher/ginger/gim/terminal"
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)
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type line struct {
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from, to *box
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fromI, toI int
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bodyBuf *terminal.Buffer
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}
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func (l line) draw(buf *terminal.Buffer, flowDir, secFlowDir geo.XY) {
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from, to := *(l.from), *(l.to)
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start := from.rect().Edge(flowDir, secFlowDir)[0].Add(secFlowDir.Scale(l.fromI*2 + 1))
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end := to.rect().Edge(flowDir.Inv(), secFlowDir)[0]
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end = end.Add(flowDir.Inv())
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end = end.Add(secFlowDir.Scale(l.toI*2 + 1))
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buf.SetPos(start)
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buf.WriteRune(terminal.SingleLine.Perpendicular(flowDir))
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buf.DrawLine(start.Add(flowDir), end.Add(flowDir.Inv()), flowDir, terminal.SingleLine)
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buf.SetPos(end)
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buf.WriteRune(terminal.SingleLine.Arrow(flowDir))
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// draw the body
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if l.bodyBuf != nil {
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mid := start.Midpoint(end, rounder)
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bodyBufRect := geo.Rect{Size: l.bodyBuf.Size()}
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buf.DrawBuffer(bodyBufRect.Centered(mid, rounder).TopLeft, l.bodyBuf)
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}
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}
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