1. Basic Graphics
Drawing Shapes 2

2. Learning Goals By the end of the lesson you should know:
How to draw an ellipse
How to draw a filled ellipse
How to drawn an arc
How to draw a filled arc

3. Draw an Ellipse Draw.Ellipse(gfx,400,300,200,100,3,Helper.RED,0.5f)
Draw.Ellipse(gfx, x, y, xRadius, yRadius, lineWidth, Color, transparency)
gfx represents your game window, leave this alone
x, y is the coordinate of the centre of the ellipse
xRadius, yRadius are the horiztonal and vertical radii length of the ellipse respectively
lineWidth is the number of pixels wide the border is
Color is the colour of the ellipse, e.g. Helper.RED
transparency is how see-through the border is, a float number from 0 to 1 where 0 is invisible
Example: Draw a red ellipse at (400,300) that is 200 pixels wide and 100 tall. The ellipse is half transparent and 3 pixels wide
Draw.Ellipse(gfx,400,300,200,100,3,Helper.RED,0.5f)

4. Draw a Filled Ellipse
Draw.FillEllipse(gfx, x, y, xRadius, yRadius, color, transparency)
gfx represents your game window, leave this alone
x,y is the coordinate for the centre of the ellipse
xRadius, yRadius are the horiztonal and vertical radii length of the ellipse respectively
color is the colour the ellipse is filled in with
transparency is how see-through the ellipse is, a float number from 0 to 1 where 0 is invisible
Example: Draw an opaque white ellipse at (400,300) that is 100 pixels wide and 200 tall. The ellipse is 5 pixels wide
Draw.FillEllipse(gfx,400,30,100,200,Helper.WHITE,0.5f);

5. Draw an Arc
Draw.Arc(gfx,x,y,xRadius,yRadius,startAngle,angleDuration,arcType,lineWidth,Color,transparency)
An Arc is simply an ellipse that doesn’t go all the way around
gfx represents your game window, leave this alone
x, y is the coordinate of the centre of the arc
xRadius, yRadius are the horiztonal and vertical radii length of the arc respectively
startAngle is the to start the arc at
angleDuration is the number of degrees to continue the arc for
arcType is one of three types of arc to draw:
Arc2D.PIE (shaped like a pizza slice)
Arc2D.CHORD (Draws a straight line joining the start and end point)
Arc2D.Open (Draws only the Arc itself)
lineWidth is the number of pixels wide the border is
Color is the colour of the arc, e.g. Helper.RED
transparency is how see-through the border is, a float number from 0 to 1 where 0 is invisible
Example: Draw an opaque blue arc at (700,500) that is 50 pixels wide and 100 tall. The arc has a border of 5 pixels, starts at 45o and runs for 90o (will end at 135o). The arc will be pizza shaped.
Draw.Arc(gfx,700,500,50,100,45,90,Arc2D.PIE,5,Helper.BLUE,1f)

6. Draw a Filled Arc
Draw.FillArc(gfx,x,y,xRadius,yRadius,startAngle,angleDuration,arcType,Color,transparency)
An Arc is simply an ellipse that doesn’t go all the way around
gfx represents your game window, leave this alone
x, y is the coordinate of the centre of the arc
xRadius, yRadius are the horiztonal and vertical radii length of the arc respectively
startAngle is the to start the arc at
angleDuration is the number of degrees to continue the arc for
arcType is one of three types of arc to draw:
Arc2D.PIE (shaped like a pizza slice)
Arc2D.CHORD (Draws a straight line joining the start and end point)
Arc2D.Open (Draws only the Arc itself)
Color is the colour of the arc, e.g. Helper.RED
transparency is how see-through the border is, a float number from 0 to 1 where 0 is invisible
Example: Draw a ¾ opaque yellow arc at (700,500) that is 100 pixels wide and 50 tall. The arc has a border of 5 pixels, starts at 30o and runs for 300o (will end at 330o). The arc will be pizza shaped.
Draw.FillArc(gfx,700,500,100,50,30,300,Arc2D.PIE,Helper.YELLOWE,0.75f)