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Proper code highlighting in README.md #7

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Mar 23, 2014
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Proper code highlighting in README.md #7

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177 changes: 93 additions & 84 deletions README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -31,9 +31,10 @@ SAT.js contains the following JavaScript classes:
### SAT.Vector (aliased as SAT.V)

This is a simple 2D vector/point class. It is created by calling:

// Create the vector (10,10) - If (x,y) not specified, defaults to (0,0).
var v = new SAT.Vector(10, 10)
```javascript
// Create the vector (10,10) - If (x,y) not specified, defaults to (0,0).
var v = new SAT.Vector(10, 10)
```

It has the following properties:

Expand Down Expand Up @@ -62,10 +63,11 @@ It contains the following methods:
### SAT.Circle

This is a simple circle with a center position and a radius. It is created by calling:
```javascript
// Create a circle whose center is (10,10) with radius of 20
var c = new SAT.Circle(new Sat.Vector(10,10), 20);
```

// Create a circle whose center is (10,10) with radius of 20
var c = new SAT.Circle(new Sat.Vector(10,10), 20);

It has the following properties:

- `pos` - A Vector representing the center of the circle.
Expand All @@ -75,13 +77,14 @@ It has the following properties:
### SAT.Polygon

This is a **convex** polygon, whose points are specified in a counter-clockwise fashion. It is created by calling:

// Create a triangle at (0,0)
var p = new SAT.Polygon(new SAT.Vector(), [
new SAT.Vector(),
new SAT.Vector(100,0),
new SAT.Vector(50,75)
]);
```javascript
// Create a triangle at (0,0)
var p = new SAT.Polygon(new SAT.Vector(), [
new SAT.Vector(),
new SAT.Vector(100,0),
new SAT.Vector(50,75)
]);
```

It has the following properties:

Expand All @@ -105,9 +108,10 @@ It has the following methods:
### SAT.Box

This is a simple Box with a position, width, and height. It is created by calling:

// Create a box at (10,10) with width 20 and height 40.
var b = new SAT.Box(new SAT.Vector(10,10), 20, 40);
```javascript
// Create a box at (10,10) with width 20 and height 40.
var b = new SAT.Box(new SAT.Vector(10,10), 20, 40);
```

It has the following properties:

Expand Down Expand Up @@ -185,80 +189,85 @@ Examples
--------

Test two circles
```javascript
var V = SAT.Vector;
var C = SAT.Circle;

var V = SAT.Vector;
var C = SAT.Circle;

var circle1 = new C(new V(0,0), 20);
var circle2 = new C(new V(30,0), 20);
var response = new SAT.Response();
var collided = SAT.testCircleCircle(circle1, circle2, response);

// collided => true
// response.overlap => 10
// response.overlapV => (10, 0)

Test a circle and a polygon
var circle1 = new C(new V(0,0), 20);
var circle2 = new C(new V(30,0), 20);
var response = new SAT.Response();
var collided = SAT.testCircleCircle(circle1, circle2, response);

// collided => true
// response.overlap => 10
// response.overlapV => (10, 0)
```

var V = SAT.Vector;
var C = SAT.Circle;
var P = SAT.Polygon;

var circle = new C(new V(50,50), 20);
// A square
var polygon = new P(new V(0,0), [
new V(0,0), new V(40,0), new V(40,40), new V(0,40)
]);
var response = new SAT.Response();
var collided = SAT.testPolygonCircle(polygon, circle, response);

// collided => true
// response.overlap ~> 5.86
// response.overlapV ~> (4.14, 4.14) - i.e. on a diagonal
Test a circle and a polygon
```javascript
var V = SAT.Vector;
var C = SAT.Circle;
var P = SAT.Polygon;

var circle = new C(new V(50,50), 20);
// A square
var polygon = new P(new V(0,0), [
new V(0,0), new V(40,0), new V(40,40), new V(0,40)
]);
var response = new SAT.Response();
var collided = SAT.testPolygonCircle(polygon, circle, response);

// collided => true
// response.overlap ~> 5.86
// response.overlapV ~> (4.14, 4.14) - i.e. on a diagonal
```

Test two polygons
```javascript
var V = SAT.Vector;
var P = SAT.Polygon;

// A square
var polygon1 = new P(new V(0,0), [
new V(0,0), new V(40,0), new V(40,40), new V(0,40)
]);
// A triangle
var polygon2 = new P(new V(30,0), [
new V(0,0), new V(30, 0), new V(0, 30)
]);
var response = new SAT.Response();
var collided = SAT.testPolygonPolygon(polygon1, polygon2, response);

// collided => true
// response.overlap => 10
// response.overlapV => (10, 0)
```

var V = SAT.Vector;
var P = SAT.Polygon;

// A square
var polygon1 = new P(new V(0,0), [
new V(0,0), new V(40,0), new V(40,40), new V(0,40)
]);
// A triangle
var polygon2 = new P(new V(30,0), [
new V(0,0), new V(30, 0), new V(0, 30)
]);
var response = new SAT.Response();
var collided = SAT.testPolygonPolygon(polygon1, polygon2, response);

// collided => true
// response.overlap => 10
// response.overlapV => (10, 0)

No collision between two Boxes
```javascript
var V = SAT.Vector;
var B = SAT.Box;

var V = SAT.Vector;
var B = SAT.Box;

var box1 = new B(new V(0,0), 20, 20).toPolygon();
var box2 = new B(new V(100,100), 20, 20).toPolygon();
var collided = SAT.testPolygonPolygon(box1, box2);

// collided => false

Hit testing a circle and polygon
var box1 = new B(new V(0,0), 20, 20).toPolygon();
var box2 = new B(new V(100,100), 20, 20).toPolygon();
var collided = SAT.testPolygonPolygon(box1, box2);

var V = SAT.Vector;
var C = SAT.Circle;
var P = SAT.Polygon;
// collided => false
```

var triangle = new P(new V(30,0), [
new V(0,0), new V(30, 0), new V(0, 30)
]);
var circle = new C(new V(100,100), 20);

SAT.pointInPolygon(new V(0,0), triangle); // false
SAT.pointInPolygon(new V(35, 5), triangle); // true
SAT.pointInCircle(new V(0,0), circle); // false
SAT.pointInCircle(new V(110,110), circle); // true
Hit testing a circle and polygon
```javascript
var V = SAT.Vector;
var C = SAT.Circle;
var P = SAT.Polygon;

var triangle = new P(new V(30,0), [
new V(0,0), new V(30, 0), new V(0, 30)
]);
var circle = new C(new V(100,100), 20);

SAT.pointInPolygon(new V(0,0), triangle); // false
SAT.pointInPolygon(new V(35, 5), triangle); // true
SAT.pointInCircle(new V(0,0), circle); // false
SAT.pointInCircle(new V(110,110), circle); // true
```