# Code coverage report for src/camera/Perspective.js

# all files / src/camera/ Perspective.js

100% Statements 15/15
100% Branches 0/0
100% Functions 3/3
100% Lines 15/15

    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    40
    41
    42
    43
    44
    45
    46
    47
    48
    49
    50
    51
    52
    53
    54
    55
    56
    57
    58
    59
    60
    61

    1×

    134×
    134×

    1×
    1×
    1×
    1×
    1×
    1×

    1×
    1×
    1×
    1×
    1×

    1×

     import Camera from '../Camera';

    /**
     * @constructor clay.camera.Perspective
     * @extends clay.Camera
     */
    var Perspective = Camera.extend(
    /** @lends clay.camera.Perspective# */
    {
        /**
         * Vertical field of view in degrees
         * @type {number}
         */
        fov: 50,
        /**
         * Aspect ratio, typically viewport width / height
         * @type {number}
         */
        aspect: 1,
        /**
         * Near bound of the frustum
         * @type {number}
         */
        near: 0.1,
        /**
         * Far bound of the frustum
         * @type {number}
         */
        far: 2000
    },
    /** @lends clay.camera.Perspective.prototype */
    {

        updateProjectionMatrix: function() {
            var rad = this.fov / 180 * Math.PI;
            this.projectionMatrix.perspective(rad, this.aspect, this.near, this.far);
        },
        decomposeProjectionMatrix: function () {
            var m = this.projectionMatrix.array;
            var rad = Math.atan(1 / m[5]) * 2;
            this.fov = rad / Math.PI * 180;
            this.aspect = m[5] / m[0];
            this.near = m[14] / (m[10] - 1);
            this.far = m[14] / (m[10] + 1);
        },
        /**
         * @return {clay.camera.Perspective}
         */
        clone: function() {
            var camera = Camera.prototype.clone.call(this);
            camera.fov = this.fov;
            camera.aspect = this.aspect;
            camera.near = this.near;
            camera.far = this.far;

            return camera;
        }
    });

    export default Perspective;