艺术元素

Focus: Line is the most basic element of art — a moving point that the eye follows across a surface.

• A line is a mark with length and direction: straight, curved, angular, or freeform.
• Lines vary in quality — thick or thin, smooth or rough, continuous or broken, dark or light.
• Contour lines trace the edges of a form; gesture lines quickly capture movement and energy.
• Implied lines are suggested, not drawn — by a row of objects, a pointing arm, or a gaze.
• Direction carries feeling: horizontal reads as calm, vertical as strength, diagonal as action.
• Artists use line to build shape, shade value (hatching, cross-hatching), imply texture, and lead the eye.

Focus: Shape is a flat, enclosed area; form is the illusion of a three-dimensional object on a 2-D surface.

• A shape is a two-dimensional area with a boundary; form appears three-dimensional (height, width, depth).
• Geometric shapes (circle, square, triangle) are regular and mechanical; organic shapes are free and natural.
• Positive shapes are the objects; negative shapes are the empty spaces around and between them.
• Form is created on a flat surface through value (shading), overlapping, and perspective.
• Recognising negative space helps an artist see and compose more accurately.

Focus: Value is the lightness or darkness of a colour or tone — the key to showing form and depth.

• Value runs from white through greys to black; a value scale shows the gradual steps.
• Highlight, midtone, core shadow, reflected light, and cast shadow describe light on a form.
• Strong value contrast creates drama and a clear focal point; close values feel soft and calm.
• Chiaroscuro is the bold use of light and dark to model three-dimensional form.
• Squinting removes colour and helps an artist judge value relationships.

Focus: Colour is light reflected from a surface; it has three properties and follows the logic of the colour wheel.

• Colour has three properties: hue (its name), value (light/dark), and saturation/intensity (dull to vivid).
• Primary colours (red, yellow, blue) mix to make secondary (orange, green, violet) and tertiary colours.
• Colour schemes: complementary, analogous, monochromatic, triadic, warm, and cool.
• Warm colours (red, orange, yellow) advance and energise; cool colours (blue, green, violet) recede and calm.
• Adding white makes a tint, black makes a shade, grey makes a tone.
• Complementary colours placed side by side intensify each other; mixed together they dull (neutralise).

Focus: Texture is the surface quality of a work — how it feels or how it appears to feel.

• Actual (tactile) texture can be physically touched (thick paint, collage, rough paper).
• Implied (visual) texture is the illusion of a surface, created with marks, value, and pattern.
• Texture is built through mark-making: stippling, hatching, dry-brush, impasto, and frottage (rubbing).
• Contrasting smooth and rough areas adds interest and can direct attention.
• In photography and digital work, texture comes from light, focus, and surface detail.

Focus: Space is the area within, around, and between the parts of a work, including the illusion of depth.

• Positive space is filled by the subject; negative space is the empty area around it.
• Artists create the illusion of depth with overlapping, size, placement, and detail.
• Linear perspective uses a horizon line and vanishing point(s) so parallel lines converge.
• Atmospheric (aerial) perspective makes distant objects paler, bluer, and less detailed.
• Foreground, middle ground, and background organise a scene from near to far.
• The format and cropping of the picture plane shape how space is read.