Collision Detection: Creating SVG Polygons for the Game Actors and Writing Code to Detect Collision - Beginning Java 8 Games Development - page 514

author, Andreas Loew , who writes about iOS Game Development. Let's take a quick
look at how we would define our sprite's collision polygon using this professional
game development tool, and then we will be ready to get to collision detection coding.
Install and launch PE using the green cube PE icon, and use the Import Sprite button
shown in Figure 16-21 to open up your sprite1.png file, and use the zoom slider at the
bottom of the screen to zoom in 600% , just like we did in GIMP.
Figure 16-21 . Launch PhysicsEditor and use the Add Sprites button to open the sprite1.png file and zoom into it
600%
Next click on the tracer icon at the top of the sprite editing area (it is the middle
icon, that looks like a magic wand), which will open the Tracer dialog, shown in Fig-
ure 16-22 . In this dialog you can set the zoom, tracing algorithm tolerance, Trace
Mode and Frame mode , and see the resulting vertex count as a result of these settings.