openlayers/test/spec/ol/render/webgl/replay.test.js

Build tools and sources for developing OpenLayers based mapping applications

goog.provide('ol.test.render.webgl.Replay');

goog.require('ol.geom.MultiPoint');
goog.require('ol.geom.Point');
goog.require('ol.render.webgl.ImageReplay');
goog.require('ol.style.Image');


describe('ol.render.webgl.ImageReplay', function() {
  var replay;

  var createImageStyle = function(image) {
    var imageStyle = new ol.style.Image({
      opacity: 0.1,
      rotateWithView: true,
      rotation: 1.5,
      scale: 2.0
    });
    imageStyle.getAnchor = function() {
      return [0.5, 1];
    };
    imageStyle.getImage = function() {
      return image;
    };
    imageStyle.getHitDetectionImage = function() {
      return image;
    };
    imageStyle.getImageSize = function() {
      return [512, 512];
    };
    imageStyle.getHitDetectionImageSize = function() {
      return [512, 512];
    };
    imageStyle.getOrigin = function() {
      return [200, 200];
    };
    imageStyle.getSize = function() {
      return [256, 256];
    };
    return imageStyle;
  };

  beforeEach(function() {
    var tolerance = 0.1;
    var maxExtent = [-10000, -20000, 10000, 20000];
    replay = new ol.render.webgl.ImageReplay(tolerance, maxExtent);
  });

  describe('#setImageStyle', function() {

    var imageStyle1, imageStyle2;

    beforeEach(function() {
      imageStyle1 = createImageStyle(new Image());
      imageStyle2 = createImageStyle(new Image());
    });

    it('set expected states', function() {
      replay.setImageStyle(imageStyle1);
      expect(replay.anchorX_).to.be(0.5);
      expect(replay.anchorY_).to.be(1);
      expect(replay.height_).to.be(256);
      expect(replay.imageHeight_).to.be(512);
      expect(replay.imageWidth_).to.be(512);
      expect(replay.opacity_).to.be(0.1);
      expect(replay.originX_).to.be(200);
      expect(replay.originY_).to.be(200);
      expect(replay.rotation_).to.be(1.5);
      expect(replay.rotateWithView_).to.be(true);
      expect(replay.scale_).to.be(2.0);
      expect(replay.width_).to.be(256);
      expect(replay.images_).to.have.length(1);
      expect(replay.groupIndices_).to.have.length(0);
      expect(replay.hitDetectionImages_).to.have.length(1);
      expect(replay.hitDetectionGroupIndices_).to.have.length(0);

      replay.setImageStyle(imageStyle1);
      expect(replay.images_).to.have.length(1);
      expect(replay.groupIndices_).to.have.length(0);
      expect(replay.hitDetectionImages_).to.have.length(1);
      expect(replay.hitDetectionGroupIndices_).to.have.length(0);

      replay.setImageStyle(imageStyle2);
      expect(replay.images_).to.have.length(2);
      expect(replay.groupIndices_).to.have.length(1);
      expect(replay.hitDetectionImages_).to.have.length(2);
      expect(replay.hitDetectionGroupIndices_).to.have.length(1);
    });
  });

  describe('#drawPoint', function() {
    beforeEach(function() {
      var imageStyle = createImageStyle(new Image());
      replay.setImageStyle(imageStyle);
    });

    it('sets the buffer data', function() {
      var point;

      point = new ol.geom.Point([1000, 2000]);
      replay.drawPoint(point, null);
      expect(replay.vertices_).to.have.length(32);
      expect(replay.indices_).to.have.length(6);
      expect(replay.indices_[0]).to.be(0);
      expect(replay.indices_[1]).to.be(1);
      expect(replay.indices_[2]).to.be(2);
      expect(replay.indices_[3]).to.be(0);
      expect(replay.indices_[4]).to.be(2);
      expect(replay.indices_[5]).to.be(3);

      point = new ol.geom.Point([2000, 3000]);
      replay.drawPoint(point, null);
      expect(replay.vertices_).to.have.length(64);
      expect(replay.indices_).to.have.length(12);
      expect(replay.indices_[6]).to.be(4);
      expect(replay.indices_[7]).to.be(5);
      expect(replay.indices_[8]).to.be(6);
      expect(replay.indices_[9]).to.be(4);
      expect(replay.indices_[10]).to.be(6);
      expect(replay.indices_[11]).to.be(7);
    });
  });

  describe('#drawMultiPoint', function() {
    beforeEach(function() {
      var imageStyle = createImageStyle(new Image());
      replay.setImageStyle(imageStyle);
    });

    it('sets the buffer data', function() {
      var multiPoint;

      multiPoint = new ol.geom.MultiPoint(
          [[1000, 2000], [2000, 3000]]);
      replay.drawMultiPoint(multiPoint, null);
      expect(replay.vertices_).to.have.length(64);
      expect(replay.indices_).to.have.length(12);
      expect(replay.indices_[0]).to.be(0);
      expect(replay.indices_[1]).to.be(1);
      expect(replay.indices_[2]).to.be(2);
      expect(replay.indices_[3]).to.be(0);
      expect(replay.indices_[4]).to.be(2);
      expect(replay.indices_[5]).to.be(3);
      expect(replay.indices_[6]).to.be(4);
      expect(replay.indices_[7]).to.be(5);
      expect(replay.indices_[8]).to.be(6);
      expect(replay.indices_[9]).to.be(4);
      expect(replay.indices_[10]).to.be(6);
      expect(replay.indices_[11]).to.be(7);

      multiPoint = new ol.geom.MultiPoint(
          [[3000, 4000], [4000, 5000]]);
      replay.drawMultiPoint(multiPoint, null);
      expect(replay.vertices_).to.have.length(128);
      expect(replay.indices_).to.have.length(24);
      expect(replay.indices_[12]).to.be(8);
      expect(replay.indices_[13]).to.be(9);
      expect(replay.indices_[14]).to.be(10);
      expect(replay.indices_[15]).to.be(8);
      expect(replay.indices_[16]).to.be(10);
      expect(replay.indices_[17]).to.be(11);
      expect(replay.indices_[18]).to.be(12);
      expect(replay.indices_[19]).to.be(13);
      expect(replay.indices_[20]).to.be(14);
      expect(replay.indices_[21]).to.be(12);
      expect(replay.indices_[22]).to.be(14);
      expect(replay.indices_[23]).to.be(15);
    });
  });
});