Directional Force, Size, Scale, and Proportion

DESIGN PRINCIPLES

• Compositional means by which artists arrange design elements for effective visual expression.

DIRECTIONAL FORCE

• Arrangement of elements that can move the viewer’s eye in, around, or through a work of art.

DIRECTIONAL LINES

• Visual or implied lines that move the viewer’s attention to an artifact’s focal point.

Directional Force

• Vertical Force• Horizontal Force• Diagonal Force• Circular Force• Triangular Force• Using Multiple

Directional Forces

Size, Scale, and Proportion

• Making a Statement with Size• Playing with Scale• Searching for Perfection

in Proportion– Classical Proportions– The Spiral

SCALE

• The comparative size of an elements of art or object in relation to other elements or objects and normative conventions.

PROPORTION

• The relationship of the sizes of parts to each other and to the whole.

Dalton Ghetti

GOLDEN RECTANGLE

• A rectangle derived by the ancient Greeks from the Golden Section.

GOLDEN SECTION

• A line sectioned so the ratio of the shorter section is to the larger section as the larger section is to the whole.

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“Vitruvian Man”

• a palm is the width of four fingers• a foot is the width of four palms (i.e., 12 inches)• a cubit is the width of six palms• a pace is four cubits• a man's height is four cubits (and thus 24 palms)• "erit eaque mensura ad manas pansas"• the length of a man's outspread arms (arm span) is equal to his height• the distance from the hairline to the bottom of the chin is one-tenth of a man's height• the distance from the top of the head to the bottom of the chin is one-eighth of a man's

height• the distance from the bottom of the neck to the hairline is one-sixth of a man's height• the maximum width of the shoulders is a quarter of a man's height• the distance from the middle of the chest to the top of the head is a quarter of a man's

height• the distance from the elbow to the tip of the hand is a quarter of a man's height• the distance from the elbow to the armpit is one-eighth of a man's height• the length of the hand is one-tenth of a man's height• the distance from the bottom of the chin to the nose is one-third of the length of the head• the distance from the hairline to the eyebrows is one-third of the length of the face• the length of the ear is one-third of the length of the face• the length of a man's foot is one-sixth of his height

• The multiple viewpoint that set in with Romanticism has convinced us that there is no such thing as a universal set of proportions for the human body. The field of anthropometry was created in order to describe individual variations. Vitruvius' statements may be interpreted as statements about average proportions. Vitruvius takes pains to give a precise mathematical definition of what he means by saying that the navel is the center of the body, but other definitions lead to different results; for example, the center of mass of the human body depends on the position of the limbs, and in a standing posture is typically about 10 cm lower than the navel, near the top of the hip bones.