/**

* @author simonThiele / https://github.com/simonThiele

*/

module( "PerspectiveCamera" );

test( "updateProjectionMatrix", function() {

var cam = new THREE.PerspectiveCamera( 75, 16 / 9, 0.1, 300.0 );

// updateProjectionMatrix is called in contructor

var m = cam.projectionMatrix;

// perspective projection is given my the 4x4 Matrix

// 2n/r-l 0 l+r/r-l 0

// 0 2n/t-b t+b/t-b 0

// 0 0 -(f+n/f-n) -(2fn/f-n)

// 0 0 -1 0

// this matrix was calculated by hand via glMatrix.perspective(75, 16 / 9, 0.1, 300.0, pMatrix)

// to get a reference matrix from plain WebGL

var reference = new THREE.Matrix4().set(

0.7330642938613892, 0, 0, 0,

0, 1.3032253980636597, 0, 0,

0, 0, -1.000666856765747, -0.2000666856765747,

0, 0, -1, 0

);

ok( reference.equals(m) );

});

test( "clone", function() {

var near = 1,

far = 3,

bottom = -1,

top = 1,

aspect = 16 / 9,

fov = 90;

var cam = new THREE.PerspectiveCamera( fov, aspect, near, far );

var clonedCam = cam.clone();

ok( cam.fov === clonedCam.fov , "fov is equal" );

ok( cam.aspect === clonedCam.aspect , "aspect is equal" );

ok( cam.near === clonedCam.near , "near is equal" );

ok( cam.far === clonedCam.far , "far is equal" );

ok( cam.zoom === clonedCam.zoom , "zoom is equal" );

ok( cam.projectionMatrix.equals(clonedCam.projectionMatrix) , "projectionMatrix is equal" );

});