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Grid:
Tics Lines:
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Hash Lines:
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Labels:
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Trace Lines:
Robot 1:
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Robot 2:
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Robot 3:
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Robot 4:
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Axes: x-axis y-axis Show Grid
Grid: 24x24 inches 36x36 inches 72x72 inches
96x96 inches 192x192 inches
Quad: 4 quadrants 1 quadrant
Units: US Customary Metric
Background:

Robot 1
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( in, in)
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deg
Current Position: (0 in, 0 in)
Current Angle: 90 deg
Wheel Radius:
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Robot 2
Initial Position:
( in, in)
Initial Angle:
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Current Position: (6 in, 0 in)
Current Angle: 90 deg
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Robot 3
Initial Position:
( in, in)
Initial Angle:
deg
Current Position: (12 in, 0 in)
Current Angle: 90 deg
Wheel Radius:
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Robot 4
Initial Position:
( in, in)
Initial Angle:
deg
Current Position: (18 in, 0 in)
Current Angle: 90 deg
Wheel Radius:
Track Width:
in
Animate a Ring
Problem Statement:
The pre-placed blocks animate the ring increasing and decreasing in size. Experiment with the code blocks and see what each part of the code does. Try slowing down the animation. 
/* Code generated by RoboBlockly v2.0 */
#include <chplot.h>
double i;
double j;
CPlot plot;

plot.grid(PLOT_OFF);
plot.backgroundColor("white");
// we use the loop to create the animation
// the i loop is responsible for the first half
// the radius of the white circle decreases
// every time it loops
// change the "count i by 3"
// to change the speed of the animation
for(i = 1; i <= 16; i++) {
  plot.strokeColor("red");
  plot.fillColor("red");
  plot.circle(18, 18, 16);
  plot.strokeColor("white");
  plot.fillColor("white");
  plot.circle(18, 18, 16 - i);
  // without delay, you can't see the animation
  delaySeconds(0.03);
}
// the j loop decreases the size of the red ring
// by increasing the radius of the white circle
for(j = 1; j <= 16; j++) {
  plot.strokeColor("red");
  plot.fillColor("red");
  plot.circle(18, 18, 16);
  plot.strokeColor("white");
  plot.fillColor("white");
  plot.circle(18, 18, j);
  delaySeconds(0.03);
}
plot.backgroundColor("white");

plot.label(PLOT_AXIS_XY, "");
plot.grid(PLOT_OFF);
plot.tics(PLOT_AXIS_XY, PLOT_OFF);
plot.axis(PLOT_AXIS_XY, PLOT_OFF);
plot.axisRange(PLOT_AXIS_XY, 0, 36);
plot.ticsRange(PLOT_AXIS_XY, 6);
plot.sizeRatio(1);
plot.plotting();
Blocks Save Blocks Load Blocks Show Ch Save Ch Workspace
Problem Statement:
The pre-placed blocks animate the ring increasing and decreasing in size. Experiment with the code blocks and see what each part of the code does. Try slowing down the animation. 

		

			

				
			

			
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