0x2418126y2418126
Grid:
Tics Lines:
Width px
Hash Lines:
Width px
Labels:
Font px
Trace Lines:
Robot 1:
Width px
Robot 2:
Width px
Robot 3:
Width px
Robot 4:
Width px
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

Initial Position:
( in, in)
Initial Angle:
deg
Current Position: (0 in, 0 in)
Current Angle: 90 deg
Wheel Radius:
Track Width:
in

Robot 2

Initial Position:
( in, in)
Initial Angle:
deg
Current Position: (6 in, 0 in)
Current Angle: 90 deg
Wheel Radius:
Track Width:
in

Robot 3

Initial Position:
( in, in)
Initial Angle:
deg
Current Position: (12 in, 0 in)
Current Angle: 90 deg
Wheel Radius:
Track Width:
in

Robot 4

Initial Position:
( in, in)
Initial Angle:
deg
Current Position: (18 in, 0 in)
Current Angle: 90 deg
Wheel Radius:
Track Width:
in

Use Ratios to Make a Snowball Roll Down a Mountain
Problem Statement:
The pre-placed blocks animate an ellipse moving down a mountain. Change the height of the ellipse so that the unit rate for the ratio of height to width for the ellipse is 1, making it a circle. This will create an animation of a snowball rolling down a mountain.
/* Code generated by RoboBlockly v2.0 */
#include <chplot.h>
double i;
CPlot plot;

for(i = 1; i <= 17; i += 0.25) {
  //plot.backgroundImage("clouds.png");
  plot.strokeColor("black");
  plot.strokeWidth(1);
  plot.fillColor("#cccccc");
  plot.triangle(0, 18, 0, 0, 18, 0);
  plot.fillColor("white");
  plot.ellipse(i, 18 - (i - double(i)/3), 2 * (double(i)/13.5 + i * 0.25), 2 * (double(i)/13.5 + i * 0.25), 0);
  delaySeconds(0.04);
}

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, 24);
plot.ticsRange(PLOT_AXIS_XY, 2);
plot.sizeRatio(1);
plot.plotting();
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Problem Statement:
The pre-placed blocks animate an ellipse moving down a mountain. Change the height of the ellipse so that the unit rate for the ratio of height to width for the ellipse is 1, making it a circle. This will create an animation of a snowball rolling down a mountain.

		
Time