“Elements of Art” :: SPACETwo-dimensional spaceMeasurable distances on a surface which show length and width but lack any illusion of thickness or depth.
Three-dimensional spaceA sensation of space that seems to have length, width, and height to create visual or real depth.
Four-dimensional spaceA highly imaginative treatment of forms that gives a sense of intervals of time or motion.
Infinite spaceA pictorial concept in which the illusion of space has the quality of endlessness found in the natural environment. The picture frame has the quality of a window through which one can see the endless recession of forms into space.
Atmospheric (aerial)The illusion of deep space produced by aerial perspective, lightening values, softening contours, reducing value contrasts, and neutralizing colors in objects as they recede.
ConvergengeThe visual illusion of apparent parallel lines meeting at a central point in infinite space.
Horizon LineThis is a line horizontally oriented at your eye level regardless of the viewer’s position. If the viewer looks up, the horizon line is lower in a picture plane; if s/he looks down, the line is higher on the picture plane, and if s/he looks straight ahead, the line is in the middle.
Vanishing PointThe point(s) on a horizon line at which apparent parallel lines will converge.
ObliqueBeing neither perpendicular nor parallel to a line.
Cone of VisionThis is all that you can see without moving your eyes, (anywhere from about 30° to 80°).
Fixed Point of ViewThe position from which one views a scene without moving his or her body or eyes in order to create a specific perspective. Linear perspective relies on this for accuracy, because once position is changed, the perspective, lines, and mathematical realities of the cone of vision will change.
Central Line of VisionThis imaginary line is centered in the cone of vision and is perpendicular (at a right angle) to the picture plane.
Three-dimensional spaceA sensation of space that seems to have length, width, and height to create visual or real depth.
Four-dimensional spaceA highly imaginative treatment of forms that gives a sense of intervals of time or motion.
Infinite spaceA pictorial concept in which the illusion of space has the quality of endlessness found in the natural environment. The picture frame has the quality of a window through which one can see the endless recession of forms into space.
Atmospheric (aerial)The illusion of deep space produced by aerial perspective, lightening values, softening contours, reducing value contrasts, and neutralizing colors in objects as they recede.
ConvergengeThe visual illusion of apparent parallel lines meeting at a central point in infinite space.
Horizon LineThis is a line horizontally oriented at your eye level regardless of the viewer’s position. If the viewer looks up, the horizon line is lower in a picture plane; if s/he looks down, the line is higher on the picture plane, and if s/he looks straight ahead, the line is in the middle.
Vanishing PointThe point(s) on a horizon line at which apparent parallel lines will converge.
ObliqueBeing neither perpendicular nor parallel to a line.
Cone of VisionThis is all that you can see without moving your eyes, (anywhere from about 30° to 80°).
Fixed Point of ViewThe position from which one views a scene without moving his or her body or eyes in order to create a specific perspective. Linear perspective relies on this for accuracy, because once position is changed, the perspective, lines, and mathematical realities of the cone of vision will change.
Central Line of VisionThis imaginary line is centered in the cone of vision and is perpendicular (at a right angle) to the picture plane.