71 lines
2 KiB
Go
71 lines
2 KiB
Go
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// Copyright 2015 The draw2d Authors. All rights reserved.
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// created: 26/06/2015 by Stani Michiels
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package pdf2d
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import (
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"bytes"
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"log"
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"strconv"
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)
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func ftoas(xs ...float64) string {
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var buffer bytes.Buffer
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for i, x := range xs {
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if i > 0 {
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buffer.WriteString(", ")
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}
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buffer.WriteString(strconv.FormatFloat(x, 'f', 2, 64))
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}
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return buffer.String()
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}
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// VertexMatrixTransform implements Vectorizer and applies the Matrix
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// transformation tr. It is normally wrapped around gofpdf Fpdf.
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type PathLogger struct {
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logger *log.Logger
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Next Vectorizer
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}
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func NewPathLogger(logger *log.Logger,
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vectorizer Vectorizer) *PathLogger {
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return &PathLogger{logger, vectorizer}
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}
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// MoveTo creates a new subpath that start at the specified point
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func (pl *PathLogger) MoveTo(x, y float64) {
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pl.logger.Printf("MoveTo(x=%.2f, y=%.2f)", x, y)
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pl.Next.MoveTo(x, y)
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}
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// LineTo adds a line to the current subpath
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func (pl *PathLogger) LineTo(x, y float64) {
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pl.logger.Printf("LineTo(x=%.2f, y=%.2f)", x, y)
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pl.Next.LineTo(x, y)
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}
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// CurveTo adds a quadratic bezier curve to the current subpath
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func (pl *PathLogger) CurveTo(cx, cy, x, y float64) {
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pl.logger.Printf("CurveTo(cx=%.2f, cy=%.2f, x=%.2f, y=%.2f)", cx, cy, x, y)
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pl.Next.CurveTo(cx, cy, x, y)
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}
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// CurveTo adds a cubic bezier curve to the current subpath
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func (pl *PathLogger) CurveBezierCubicTo(cx1, cy1,
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cx2, cy2, x, y float64) {
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pl.logger.Printf("CurveBezierCubicTo(cx1=%.2f, cy1=%.2f, cx2=%.2f, cy2=%.2f, x=%.2f, y=%.2f)", cx1, cy1, cx2, cy2, x, y)
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pl.Next.CurveBezierCubicTo(cx1, cy1, cx2, cy2, x, y)
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}
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// ArcTo adds an arc to the current subpath
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func (pl *PathLogger) ArcTo(x, y, rx, ry, degRotate, degStart, degEnd float64) {
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pl.logger.Printf("ArcTo(x=%.2f, y=%.2f, rx=%.2f, ry=%.2f, degRotate=%.2f, degStart=%.2f, degEnd=%.2f)", x, y, rx, ry, degRotate, degStart, degEnd)
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pl.Next.ArcTo(x, y, rx, ry, degRotate, degStart, degEnd)
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}
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// ClosePath closes the subpath
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func (pl *PathLogger) ClosePath() {
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pl.Next.ClosePath()
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}
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