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Representation systems
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  • 1. REPRESENTATION SYSTEMS
  • 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. HOW TO DO IT?
  • 4. WE CAN MAKE A DIFFERENCE BETWEEN SUBJECTIVE WORKS OBJECTIVE WORKS
  • 5. IF WE ARE TALKINGABOUT SUBJECTIVEWORKS (PAINTINGS,DRAWINGS...)
  • 6. WE USE DIFFERENT MEANSrepresentation systems - 3º ESO montserrat llamas blanco we use different means size overlapping atmospheric perspective linear perspective 7
  • 7. AND IF WE TALK ABOUTOBJECTIVEWORKS(TECHNICALDRAWINGS, DESIGNS...)
  • 8. WE USE WHAT IS CALLED"REPRESENTATION SYSTEMS"
  • 9. LETS HAVE A LOOK AT THREE OFTHEM: representation systems - 3º ESO montserrat llamas blanco 1. the orthographic system 13
  • 10. LETS HAVE A LOOK AT THREE OFTHEM: representation systems - 3º ESO montserrat llamas blanco 2. the axonometric system 17
  • 11. LETS HAVE A LOOK AT THREE OFTHEM: representation systems - 3º ESO montserrat llamas blanco 3. the linear system 18
  • 12. ALL OF THE SYSTEMS ARE BASEDON A CONCEPT CALLED "PROJECTION"
  • 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. 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. EACH REPRESENTATIONSYSTEM IS BASED ON ONEOF THE PROJECTIONS. IT ISWHAT MAKES THEMDIFFERENT.LETS SEE IT:
  • 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. 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. 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. IN THE NEXT CHARTYOU CAN SEE WHICHREPRESENTIONSYSTEM COME FROMEACH PROJECTION
  • 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