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Space. Sayre – Chapter 5. Shape and Mass. Shape – a two dimensional area, whose boundaries can be measured in terms of height and width Mass – a solid that occupies a three-dimensional volume, whose boundaries can be measured in terms of height, width and depth. Shape. 2 categories of shape.
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Space Sayre – Chapter 5
Shape and Mass Shape – a two dimensional area, whose boundaries can be measured in terms of height and width Mass – a solid that occupies a three-dimensional volume, whose boundaries can be measured in terms of height, width and depth
2 categories of shape • Geometric – precise, regular, mathematical *remember Geometry class • Organic – irregular, curving/rounded, relaxed/less formal *associated with nature
Figure/Positive and Ground/Negative • When a shape appears on a picture plane, it simultaneously creates a 2nd shape out of the background area • The “shape” is the figure a.k.a. positive shape • The “background area” is the ground a.k.a. negative shape
Figure ground reversal • Figure-ground reversal = when it appears that what is ground becomes figure and then the 2 switch places again
2 categories of actual mass • Closed form – mass that does not openly interact with the space around it • Open form – mass that interacts with the space around it
Implied mass • Techniques used to imply mass (create the illusion of mass) on a 2D surface… Shadows Drapery folds Changes in value (relative lightness/darkness of colors) **accomplished with hatching and cross hatching
Actual space • Actual space (or space in 3D) needs to be experienced… • One must walk around a piece of sculpture or walk into a piece of architecture
Volume • subcategory of actual mass • Volume – when mass encloses space, the space is referred to as volume • Architecture is the best example of volume
Fig 452/15-3 University ofHouston – Collegeof Architecture
Implied space • Implied space a.k.a. “implied depth” • The illusion that the 2D surface (which is flat) projects back into space creating a sense of depth • 3 simple devices for creating the illusion of depth…
Perspective • More complex way to create illusion of depth on a 2D surface • 2 main types used: 1 – atmospheric perspective 2 – linear perspective
Atmospheric perspective • Atmospheric perspective – relies on how objects at a distance are viewed in the natural world • the more atmosphere (which includes air, dirt, moisture, etc.) between the human eye and the object viewed the… 1- less intense the color 2- less contrast between lights/darks 3- less distinct (blurry quality)
Linear perspective • Linear perspective – scientific system for depicting what appears to be 3D objects on a 2D surface • Based on the optical illusion that parallel lines appear to converge in the distance
Linear perspective(orthogonals, horizon line, vanishing point)
One point and two point linear perspective exercise… Everyone will be creating boxes using linear perspective. Take out a piece of paper, pencil, and a straight edge! Let’s do it together step by step…