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Leaning on book pile.

Recording/playback

Plots (still in progress)

Slides onto the ground (still in progress)

Bugfixes

Model:

• Ability to change mass (slider)
• Collision with walls should convert energy to thermal.
• Add Wall Force.
• Measuring tape
• Speedometer.

Graphics

• Graphs

·         Parallel Components of forces

·         Energy Graphs

·         Energy Bar Graphs at top left of screen.

·         Single word labels(“weight”, “normal”)

• Barrier Graphics
• Organization of screen real estate

Tabs

• Tab 1: No graphs
• Tab 2: Graphs

Misc

• Wiggle me on the ramp.
• Test at lower resolution.
• Audio (for crashes)
• Friction vs. No Friction.
• Performance Enhancement.

Bugs:

Arrows (and labels) should be offset (non-overlapping).

                Especially problematic for small force arrows.

Screen turds with zero-potential graphic.

Arrow text label centering fails for arrows at angles.

The sky and earth are too short.

Text graphics still appear at (0,0) when moving the ramp.

Lots of Recording/Playback bugs.

Refactor:

Ramp length should be parameter.

Questions:

Graph friction/normal/gravity force as a function of angle?

Depiction of W=F.x?  (Displacement vectors?)

What plots do we want?

Help me layout the screen (how to portion screen real estate?)