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Auliliaryvanishingpoints
Auliliaryvanishingpoints
Auliliaryvanishingpoints
Auliliaryvanishingpoints
Auliliaryvanishingpoints
Auliliaryvanishingpoints
Auliliaryvanishingpoints
Auliliaryvanishingpoints
Auliliaryvanishingpoints
Auliliaryvanishingpoints
Auliliaryvanishingpoints
Auliliaryvanishingpoints
Auliliaryvanishingpoints
Auliliaryvanishingpoints
Auliliaryvanishingpoints
Auliliaryvanishingpoints
Auliliaryvanishingpoints
Auliliaryvanishingpoints
Auliliaryvanishingpoints
Auliliaryvanishingpoints
Auliliaryvanishingpoints
Auliliaryvanishingpoints
Auliliaryvanishingpoints
Auliliaryvanishingpoints
Auliliaryvanishingpoints
Auliliaryvanishingpoints
Auliliaryvanishingpoints
Auliliaryvanishingpoints
Auliliaryvanishingpoints
Auliliaryvanishingpoints
Auliliaryvanishingpoints
Auliliaryvanishingpoints
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Auliliaryvanishingpoints

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perspective projections

perspective projections

Published in: Technology, Art & Photos
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Transcript

  • 1. Given the end elevation of abook with pages A, B, C, D, Eand F open at thirty degrees toeach other.
  • 2. Draw in the elevation of thebook bringing constructionlines from the end view.
  • 3. Draw the plan of the open book.
  • 4. Draw in the picture plane andthe spectator point.
  • 5. Draw in the horizon line andthe ground line.
  • 6. From the station point, draw a lineparallel to the side of the bookuntil it strikes the picture plane.
  • 7. From this point, perpendicular tothe picture plane drop a line downto the horizon line to establish theright-hand vanishing point.
  • 8. Repeat the previous steps toestablish the left-hand vanishingpoint.
  • 9. Next we have to find the auxiliaryvanishing points.As pages F and B are inclined atthirty degrees, draw a line at thirtydegrees to the parallel line thatestablishes VPR.
  • 10. From the parallel line thatestablishes VPR, draw a lineperpendicular to it where it strikesthe picture plane.
  • 11. Record the distance h and step itoff with a compass directly aboveand below VPR to establish AUXB and AUX F.
  • 12. We can see that pages E and Care inclined at sixty degrees.
  • 13. As pages E and C are inclined atsixty degrees, draw a line atsixty degrees to the parallel linethat establishes VPR.
  • 14. Again draw a perpendicular lineat the picture plane.
  • 15. Record the distance k and step itoff with a compass directlyabove and below VPR toestablish AUX C and AUX E.
  • 16. Now we can see four auxiliaryvanishing points.
  • 17. As this corner of the booktouches the picture plane it is atrue length in perspective.
  • 18. Connect this corner inperspective to the two vanishingpoints to establish the front twosides of the book.
  • 19. Draw lines of sight from thespectator to the two outer cornersof the book in plan.
  • 20. Where these lines of sight cut thepicture plane drop vertical lineswhich will establish the outline ofthe book in perspective.
  • 21. Bring lines of sight back to bothvanishing points from the outeredges of the book.Join page F in plan back to the spectator point.
  • 22. Draw two lines parallel to thepicture plane where these linescut.
  • 23. Auxiliary vanishing point F is usedto draw page F in perspective.
  • 24. The exact same thing is done forpage E. Join page E in plan backto the spectator point.
  • 25. Again draw two lines parallel tothe picture plane where these linescut.
  • 26. Like page F, auxiliary vanishingpoint E is used to draw page E inperspective.
  • 27. Draw in page E.
  • 28. Page D is drawn simply as itdoesn’t need an auxiliaryvanishing point.
  • 29. Pages C and B are drawn usingthe exact same procedure aspages E and F.

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