technical drawing school of art, design and architecture sarah adeel nust spring 2011

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1 technical drawing school of art, design and architecture sarah adeel nust spring 2011

2 the ability to document imagination. a mean to design reasoning spring 2011

3 perspective drawings

4 technical drawing - perspective What is perspective drawing? Perspective originally comes from Latin word per meaning through and specere which means to look. These are combined to mean to look through or to look at. Intro to technical drawing perspective

5 technical drawing - perspective What is perspective drawing? The art definition of perspective specifically describes creating the appearance of distance into our art. With time, the most typical art definition of perspective has evolved into the technique of representing a three-dimensional image on a two-dimensional surface. Intro to technical drawing perspective

6 technical drawing - perspective What is perspective drawing? Perspective is about establishing an eye in art through which the audience sees. By introducing a sense of depth, space and an extension of reality into art is created, enhancing audience s participation with it. When things appear more real, they become real to the senses. Intro to technical drawing perspective

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8 technical drawing - perspective What are the ingredients of perspective drawing? Any form consists of only three basic things: it has size or amount it covers distance it extends in different directions Intro to technical drawing perspective

9 technical drawing - perspective Everyday examples of perspective drawing Photography is an example of perspectives. In photos scenes are captured having depth, height and distance. Intro to technical drawing perspective

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13 technical drawing - perspective What is linear perspective drawing? Linear Perspective: Based on the way the human eye sees the world. Objects that are closer appear larger, more distant objects appear smaller. Intro to technical drawing perspective

14 technical drawing - perspective What is linear perspective drawing? To create the illusion of space the artists creates a vanishing point (where all lines seem to converge) on the horizon line. Intro to technical drawing perspective

15 technical drawing - perspective What is linear perspective drawing? Objects are drawn using orthogonal lines, which lead to the vanishing points. Intro to technical drawing perspective

16 technical drawing - perspective Definitions in perspective drawing Station point (SP) A fixed point in space representing the eye of the viewer. Intro to technical drawing perspective

17 technical drawing - perspective Definitions in perspective drawing Picture plane (PP) An imaginary transparent plane on which image is projected. Intro to technical drawing perspective

18 technical drawing - perspective Definitions in perspective drawing Centre of vision (CVR) It is the line of sight determining the direction in which observer is looking. It is always perpendicular to picture plane. Intro to technical drawing perspective

19 technical drawing - perspective Definitions in perspective drawing Line of sight They are the projectors extending from the SP to various points on picture plane. Cone of sight A ray of vision radiating outward from the eye of the viewer in a more or less conical shape along the central visual axis.

20 technical drawing - perspective Definitions in perspective drawing Horizon line (HL) A horizontal line representing the intersection of picture plane (PP) and horizontal plane through the eye of the viewer. Intro to technical drawing perspective

21 technical drawing - perspective Definitions in perspective drawing Vanishing point A point or points on the horizon line where all the orthogonal lines seem to converge. Right vanishing point (RVP) Left vanishing point (LVP) Intro to technical drawing perspective

22 technical drawing - perspective Definitions in perspective drawing Ground line (GL) and ground plane Ground plane is the plane where the object is stationed. Ground line is a horizontal line representing the intersection of ground plane and the picture plane. Intro to technical drawing perspective

23 Horizon line Centre of vision Vanishing points Ground plane Picture plane Plan in axonometric Cone of vision Station point

24 technical drawing - perspective positioning in perspective drawing Intro to technical drawing perspective

25 technical drawing - perspective Drawing perspective For example plan elevation

26 technical drawing - perspective Drawing perspective Set the plan on PP.

27 technical drawing - perspective Drawing perspective decide SP and draw CVR Centre of vision Picture plane Station point

28 technical drawing - perspective Drawing perspective draw lines of sight cvr pp sp

29 technical drawing - perspective Drawing perspective HL project lines of sight on to the GL. (the point where sight lines intersect PP) GL Determine HL pp sp

30 technical drawing - perspective Drawing perspective the point where the plan intersects the PP, draw the measuring line. ML GL pp sp

31 technical drawing - perspective Drawing perspective take vanishing points on the HL by deciding the cone of vision lvp ML rvp HL GL pp sp

32 technical drawing - perspective Drawing perspective measure height along the measuring line, according to the elevation. lvp ML rvp HL GL pp sp

33 technical drawing - perspective Drawing perspective join the orthogonal lines to the rvp and lvp. These lines become the sides of the cube. lvp ML rvp HL GL pp sp

34 technical drawing - perspective Drawing perspective the points from the lines of sight give the other two sides of the cube. lvp ML rvp HL GL pp sp

35 technical drawing - perspective Drawing perspective lvp ML rvp HL darken the required lines. GL pp sp

36 technical drawing - perspective Drawing perspective The position of vanishing points determine the view of the perspective. bird s eye view eye level worm s eye view

37 technical drawing - perspective Drawing perspective bird s eye view. lvp ML rvp HL GL pp sp

38 technical drawing - perspective Drawing perspective ML if HL is GL or close, perspective at human eye level is obtained. darken the required lines. HL GL pp sp

39 technical drawing - perspective Drawing perspective ML HL GL perspective at eye level pp sp

40 technical drawing - perspective Drawing perspective ML if vanishing points are below GL then perspective obtained is from worm s eye level. darken the required lines. GL HL pp sp

41 technical drawing - perspective Drawing perspective ML HL GL perspective at worm s eye level. pp sp

42 technical drawing - perspective Drawing perspective If the object is not directly on the picture plane then the measuring line is taken at the point where the object intersects the picture lane.

43 technical drawing - perspective Drawing perspective HL When the object is away from the picture plane. ML GL pp sp

44 technical drawing - perspective Drawing perspective ML HL When the object is across the picture plane. GL pp sp

45 Intro to technical drawing sada, spring 2010

46 technical drawing - perspective assignment Draw perspective of your house

47 technical drawing - perspective For example. Intro to technical drawing perspective

48 technical drawing - perspective For example Intro to technical drawing perspective

49 technical drawing - perspective For example Intro to technical drawing perspective

50 technical drawing - perspective For example

51 Oh no graffiti, again?

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