Representation systems

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Representation systems

  1. 1. REPRESENTATION SYSTEMS
  2. 2. WHEN WE WANT TO MAKE ADRAWING OR PAINTING WEUSUALLY WANT TOREPRESENT THE THREEDIMENSIONS OF THE REALITYON THE TWO DIMENSIONS OFTHE SURFACE WE AREWORKING ON.
  3. 3. HOW TO DO IT?
  4. 4. WE CAN MAKE A DIFFERENCE BETWEEN SUBJECTIVE WORKS OBJECTIVE WORKS
  5. 5. IF WE ARE TALKINGABOUT SUBJECTIVEWORKS (PAINTINGS,DRAWINGS...)
  6. 6. WE USE DIFFERENT MEANSrepresentation systems - 3º ESO montserrat llamas blanco we use different means size overlapping atmospheric perspective linear perspective 7
  7. 7. AND IF WE TALK ABOUTOBJECTIVEWORKS(TECHNICALDRAWINGS, DESIGNS...)
  8. 8. WE USE WHAT IS CALLED"REPRESENTATION SYSTEMS"
  9. 9. LETS HAVE A LOOK AT THREE OFTHEM: representation systems - 3º ESO montserrat llamas blanco 1. the orthographic system 13
  10. 10. LETS HAVE A LOOK AT THREE OFTHEM: representation systems - 3º ESO montserrat llamas blanco 2. the axonometric system 17
  11. 11. LETS HAVE A LOOK AT THREE OFTHEM: representation systems - 3º ESO montserrat llamas blanco 3. the linear system 18
  12. 12. ALL OF THE SYSTEMS ARE BASEDON A CONCEPT CALLED "PROJECTION"
  13. 13. IT IS EASY TO UNDERSTAND THE CONCEPT USING ASOURCE OF LIGHT, AN OBJECT AND THE SHADOW ITPROJECTS ON THE GROUND representation systems - 3º ESO montserrat llamas blanco light = centre of projection rays of light = projection rays object shadow = projection ground = projection plane 21
  14. 14. THERE ARE THREE DIFFERENT KINDS OFPROJECTION DEPENDING ON HOW THE CENTRE OFPROJECTION AND THE PROJECTION RAYS ARE: linear projection orthogonal cylindrical oblique cylindrical projection projection cylincrical projections
  15. 15. EACH REPRESENTATIONSYSTEM IS BASED ON ONEOF THE PROJECTIONS. IT ISWHAT MAKES THEMDIFFERENT.LETS SEE IT:
  16. 16. representation systems - 3º ESO montserrat llamas blanco orthogonal cylidrical all the rays are projection: parallel to each other and B perpendicular to A the picture plane C B ∝ A orthogonal system C 24
  17. 17. representation systems - 3º ESO montserrat llamas blanco oblique cylidrical projection: all the rays are parallel to each B other and oblique to the picture plane A C B ∝ A axonometric, C caballera and military perspective 25
  18. 18. representation systems - 3º ESO montserrat llamas blanco linear projection: all the rays come o from a point called the centre of projection B A C B ∝ A linear perspective C 26
  19. 19. IN THE NEXT CHARTYOU CAN SEE WHICHREPRESENTIONSYSTEM COME FROMEACH PROJECTION
  20. 20. representation systems - 3º ESO montserrat llamas blanco projections representation systems cylindrical orthogonal orthographic system axonometric system cylindrical oblique caballera perspective military perspective one-point linear system linear two-point linear system 28

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