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pdf:transformationexamples [2015/04/02 17:41] – [Coordinate Transformations] christianpdf:transformationexamples [2015/04/02 18:12] (current) – [flip vertically] christian
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 ===== no transformation ===== ===== no transformation =====
  
- page := Graphics.PDF.Page +<code smalltalk> 
- newInBounds: (-100 @ -100 corner: 100 @ 100) +page := Graphics.PDF.Page 
- colorspace: DeviceRGB new +  newInBounds: (-100 @ -100 corner: 100 @ 100) 
- render: [:renderer ¦ +  colorspace: DeviceRGB new 
- renderer moveTo: -100 @ 0; lineTo: 100 @ 0; stroke.  "line at y = 0" +  render: [:renderer ¦ 
- renderer moveTo: 0 @ -100; lineTo: 0 @ 100; stroke.  "line at x = 0" +    renderer moveTo: -100 @ 0; lineTo: 100 @ 0; stroke.  "line at y = 0" 
- renderer textObjectDo:+    renderer moveTo: 0 @ -100; lineTo: 0 @ 100; stroke.  "line at x = 0" 
- renderer setFont: #Helvetica size: 1. +    renderer textObjectDo:
- renderer textMatrix: #(4 0 0 4 50 50); showString: '(50 50)'+      renderer setFont: #Helvetica size: 1. 
- renderer textMatrix: #(2 0 0 2 -50 50); showString: '(-50 50)'+      renderer textMatrix: #(4 0 0 4 50 50); showString: '(50 50)'
- renderer textMatrix: #(2 0 0 2 50 -50); showString: '(50 -50)'+      renderer textMatrix: #(2 0 0 2 -50 50); showString: '(-50 50)'
- renderer textMatrix: #(2 0 0 2 -50 -50); showString: '(-50 -50)']]. +      renderer textMatrix: #(2 0 0 2 50 -50); showString: '(50 -50)'
- page saveAndShowAs: 'demo10_transformationsNone.pdf'+      renderer textMatrix: #(2 0 0 2 -50 -50); showString: '(-50 -50)']]. 
 +page saveAndShowAs: 'demo10_transformationsNone.pdf' 
 +</code> 
 + 
 +{{demo10_transformationsnone.pdf}}
  
 ===== flip vertically ===== ===== flip vertically =====
  
- "x -> x  ,  y -> -y   +<code smalltalk> 
- In this example the matrix is coded manually.  +"x -> x  ,  y -> -y 
- It can also be coded as 'Matrix scale: 4 @ -4to get '[4 0 0 -4 0 0]'  +In this example the matrix is coded manually.  
- and '(Matrix scale: 4 @ -4) translate: 50 @ 50to get '[4 0 0 -4 50 50]'" +It can also be coded as Matrix scale: 4 @ -4 to get '[4 0 0 -4 0 0]'  
- page := Graphics.PDF.Page +and (Matrix scale: 4 @ -4) translate: 50 @ 50 to get '[4 0 0 -4 50 50]'" 
- newInBounds: (-100 @ -100 corner: 100 @ 100) + 
- colorspace: DeviceRGB new +page := Graphics.PDF.Page 
- render: [:renderer ¦ +  newInBounds: (-100 @ -100 corner: 100 @ 100) 
- renderer concat: (Matrix scale: 1 @ -1). +  colorspace: DeviceRGB new 
- renderer moveTo: -100 @ 0; lineTo: 100 @ 0; stroke.  "line at y = 0" +  render: [:renderer ¦ 
- renderer moveTo: 0 @ -100; lineTo: 0 @ 100; stroke.  "line at x = 0" +    renderer concat: (Matrix scale: 1 @ -1). 
- renderer textObjectDo:+    renderer moveTo: -100 @ 0; lineTo: 100 @ 0; stroke.  "line at y = 0" 
- renderer setFont: #Helvetica size: 1. +    renderer moveTo: 0 @ -100; lineTo: 0 @ 100; stroke.  "line at x = 0" 
- renderer textMatrix: #(4 0 0 -4 50 50); showString: '(50 50)'+    renderer textObjectDo:
- renderer textMatrix: #(2 0 0 -2 -50 50); showString: '(-50 50)'+      renderer setFont: #Helvetica size: 1. 
- renderer textMatrix: #(2 0 0 -2 50 -50); showString: '(50 -50)'+      renderer textMatrix: #(4 0 0 -4 50 50); showString: '(50 50)'
- renderer textMatrix: #(2 0 0 -2 -50 -50); showString: '(-50 -50)']]. +      renderer textMatrix: #(2 0 0 -2 -50 50); showString: '(-50 50)'
- page saveAndShowAs: 'demo10a_transformationsFlipVertically.pdf'+      renderer textMatrix: #(2 0 0 -2 50 -50); showString: '(50 -50)'
 +      renderer textMatrix: #(2 0 0 -2 -50 -50); showString: '(-50 -50)']]. 
 +page saveAndShowAs: 'demo10a_transformationsFlipVertically.pdf' 
 +</code>
  
 +{{demo10a_transformationsflipvertically.pdf}}
 ===== flip horizontally ===== ===== flip horizontally =====
  
- "x -> -x  ,  y -> y" +<code smalltalk> 
- page := Graphics.PDF.Page +"x -> -x  ,  y -> y" 
- newInBounds: (-100 @ -100 corner: 100 @ 100) +page := Graphics.PDF.Page 
- colorspace: DeviceRGB new +  newInBounds: (-100 @ -100 corner: 100 @ 100) 
- render: [:renderer ¦ +  colorspace: DeviceRGB new 
- renderer concat: (Matrix scale: -1 @ 1). +  render: [:renderer ¦ 
- renderer moveTo: -100 @ 0; lineTo: 100 @ 0; stroke.  "line at y = 0" +    renderer concat: (Matrix scale: -1 @ 1). 
- renderer moveTo: 0 @ -100; lineTo: 0 @ 100; stroke.  "line at x = 0" +    renderer moveTo: -100 @ 0; lineTo: 100 @ 0; stroke.  "line at y = 0" 
- renderer textObjectDo:+    renderer moveTo: 0 @ -100; lineTo: 0 @ 100; stroke.  "line at x = 0" 
- renderer setFont: #Helvetica size: 1. +    renderer textObjectDo:
- renderer textMatrix: #(-4 0 0 4 50 50); showString: '(50 50)'+      renderer setFont: #Helvetica size: 1. 
- renderer textMatrix: #(-2 0 0 2 -50 50); showString: '(-50 50)'+      renderer textMatrix: #(-4 0 0 4 50 50); showString: '(50 50)'
- renderer textMatrix: #(-2 0 0 2 50 -50); showString: '(50 -50)'+      renderer textMatrix: #(-2 0 0 2 -50 50); showString: '(-50 50)'
- renderer textMatrix: #(-2 0 0 2 -50 -50); showString: '(-50 -50)']]. +      renderer textMatrix: #(-2 0 0 2 50 -50); showString: '(50 -50)'
- page saveAndShowAs: 'demo10b_transformationsFlipHorizontally.pdf'+      renderer textMatrix: #(-2 0 0 2 -50 -50); showString: '(-50 -50)']]. 
 +page saveAndShowAs: 'demo10b_transformationsFlipHorizontally.pdf' 
 +</code> 
 +{{demo10b_transformationsfliphorizontally.pdf}}
  
 ===== flip diagonally ===== ===== flip diagonally =====
  
- "x -> -x  ,  y -> -y" +<code smalltalk> 
- page := Graphics.PDF.Page +"x -> -x  ,  y -> -y" 
- newInBounds: (-100 @ -100 corner: 100 @ 100) +page := Graphics.PDF.Page 
- colorspace: DeviceRGB new +  newInBounds: (-100 @ -100 corner: 100 @ 100) 
- render: [:renderer ¦ +  colorspace: DeviceRGB new 
- renderer concat: (Matrix scale: -1 @ -1). +  render: [:renderer ¦ 
- renderer moveTo: -100 @ 0; lineTo: 100 @ 0; stroke.  "line at y = 0" +    renderer concat: (Matrix scale: -1 @ -1). 
- renderer moveTo: 0 @ -100; lineTo: 0 @ 100; stroke.  "line at x = 0" +    renderer moveTo: -100 @ 0; lineTo: 100 @ 0; stroke.  "line at y = 0" 
- renderer textObjectDo:+    renderer moveTo: 0 @ -100; lineTo: 0 @ 100; stroke.  "line at x = 0" 
- renderer setFont: #Helvetica size: 1. +    renderer textObjectDo:
- renderer textMatrix: #(-4 0 0 -4 50 50); showString: '(50 50)'+      renderer setFont: #Helvetica size: 1. 
- renderer textMatrix: #(-2 0 0 -2 -50 50); showString: '(-50 50)'+      renderer textMatrix: #(-4 0 0 -4 50 50); showString: '(50 50)'
- renderer textMatrix: #(-2 0 0 -2 50 -50); showString: '(50 -50)'+      renderer textMatrix: #(-2 0 0 -2 -50 50); showString: '(-50 50)'
- renderer textMatrix: #(-2 0 0 -2 -50 -50); showString: '(-50 -50)']]. +      renderer textMatrix: #(-2 0 0 -2 50 -50); showString: '(50 -50)'
- page saveAndShowAs: 'demo10c_transformationsFlipDiagonal.pdf'+      renderer textMatrix: #(-2 0 0 -2 -50 -50); showString: '(-50 -50)']]. 
 +page saveAndShowAs: 'demo10c_transformationsFlipDiagonal.pdf' 
 +</code> 
 +{{demo10c_transformationsflipdiagonal.pdf}}
  
 ===== flip vertically and located origin in upper left corner ===== ===== flip vertically and located origin in upper left corner =====
  
- "This is the more common layout used for reports" +<code smalltalk> 
- page := Graphics.PDF.Page +"This is the more common layout used for reports" 
- newInBounds: (0 @ 0 corner: 100 @ -100) +page := Graphics.PDF.Page 
- colorspace: DeviceRGB new +  newInBounds: (0 @ 0 corner: 100 @ -100) 
- render: [:renderer ¦ +  colorspace: DeviceRGB new 
- renderer concat: (Matrix scale: 1 @ -1). +  render: [:renderer ¦ 
- renderer textObjectDo:+    renderer concat: (Matrix scale: 1 @ -1). 
- renderer setFont: #Helvetica size: 1. +    renderer textObjectDo:
- renderer textMatrix: #(2 0 0 -2 10 10); showString: '(10 10)'.  +      renderer setFont: #Helvetica size: 1. 
- renderer textMatrix: #(2 0 0 -2 10 20); showString: '(10 20)'+      renderer textMatrix: #(2 0 0 -2 10 10); showString: '(10 10)'.  
- renderer textMatrix: #(2 0 0 -2 10 30); showString: '(10 30)'+      renderer textMatrix: #(2 0 0 -2 10 20); showString: '(10 20)'
- renderer textMatrix: #(2 0 0 -2 10 40); showString: '(10 40)'+      renderer textMatrix: #(2 0 0 -2 10 30); showString: '(10 30)'
- renderer textMatrix: #(2 0 0 -2 20 10); showString: '(20 10)'.  +      renderer textMatrix: #(2 0 0 -2 10 40); showString: '(10 40)'
- renderer textMatrix: #(2 0 0 -2 20 20); showString: '(20 20)'+      renderer textMatrix: #(2 0 0 -2 20 10); showString: '(20 10)'.  
- renderer textMatrix: #(2 0 0 -2 20 30); showString: '(20 30)'+      renderer textMatrix: #(2 0 0 -2 20 20); showString: '(20 20)'
- renderer textMatrix: #(2 0 0 -2 20 40); showString: '(20 40)']]. +      renderer textMatrix: #(2 0 0 -2 20 30); showString: '(20 30)'
- page saveAndShowAs: 'demo10d_transformationsFlipVerticallyTranslateOrigin.pdf'+      renderer textMatrix: #(2 0 0 -2 20 40); showString: '(20 40)']]. 
 +page saveAndShowAs: 'demo10d_transformationsFlipVerticallyTranslateOrigin.pdf' 
 +</code> 
 +{{demo10d_transformationsflipverticallytranslateorigin.pdf}}
/var/www/virtual/code4hl/html/dokuwiki/data/pages/pdf/transformationexamples.txt · Last modified: 2015/04/02 18:12 by christian