CS 456

CS 456

Drawing

Component

• Widget• Component• Control• Pane• JComponent

Drawing Models

• Pixels

• Stroke

• Region

Tank

Hue – The color (red, green, orange)

Saturation – Amount of color vs. amount of gray/white

Value – how light or dark is the color

Some junkon the wall

Some junkSome junk

Some junkSome junkSome junk

VAVA

Curves - Continuity

• G(0)• G(1)• G(2)

• Quadratic• Cubic

Quadratic Bezier

Quadratic Bezier

Cubic Bezier

• G(0)• G(1)

Region Shapes

• moveTo(x,y)• lineTo(x,y)• quadraticTo( cx, cy, x, y)• cubicTo(c1x, c1y, c2x, c2y, x,y)

Quadratic Shape

• G.moveTo(P0x,P0y);• G.quadraticTo(P1x,P1y,P2x,P2y);

Cubic Shape

• G.moveTo(A0x,A0y);• G.cubicTo(A1x,A1y,A2x,A2y,A3x,A3y);• G.cubicTo(B1x,B1y,B2x,B2y,B3x,B3y);

Catmull-Rom Curves

• P0, P1, P2, P3• P1, P2, P3, P4• P2, P3, P4, P5• P3, P4, P5, P6• P4, P5, P6, P7• P5, P6, P7, P8• P6, P7, P8, P9

Catmull-Rom

• P3, P0, P1, P2• P0, P1, P2, P3• P1, P2, P3, P0• P2, P3, P0, P1