StackGenVis: Alignment of Data, Algorithms, and Models for Stacking Ensemble Learning Using Performance Metrics https://doi.org/10.1109/TVCG.2020.3030352
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StackGenVis/frontend/node_modules/turntable-camera-controller/test/test.js

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'use strict'
var tape = require('tape')
var createOrbit = require('../turntable')
var lookAt = require('gl-mat4/lookAt')
function arrayApproxEquals(a, b) {
for(var i=0; i<a.length; ++i) {
if(!(Math.abs(a[i] - b[i]) < 1e-4)) {
return false
}
}
return true
}
function matrixApproxEquals(a, b) {
var x = a[15]
var y = b[15]
for(var i=0; i<15; ++i) {
if(!(Math.abs(a[i] * y - b[i] * x) < 1e-4)) {
return false
}
}
return true
}
tape('turntable camera', function(t) {
for(var i=0; i<100; ++i) {
var center = [Math.random()-0.5, Math.random()-0.5, Math.random()-0.5]
var eye = [Math.random()-0.5, Math.random()-0.5, Math.random()-0.5]
var up = [Math.random()-0.5, Math.random()-0.5, Math.random()-0.5]
var mat = lookAt([], eye, center, up)
var smat = mat[15]
var controller = createOrbit()
controller.lookAt(10, eye, center, up)
var orbitMat = controller.getMatrix(10, [])
t.ok(matrixApproxEquals(mat, orbitMat), 'compare mat: ' + mat + ' : ' + orbitMat)
var ocenter = controller.computedCenter
var oeye = controller.computedEye
t.ok(arrayApproxEquals(center, ocenter), 'compare center: ' + center + ':' + ocenter)
t.ok(arrayApproxEquals(eye, oeye), 'compare eye: ' + eye + ':' + oeye)
var dist = 0.0
for(var j=0; j<3; ++j) {
dist += Math.pow(eye[j] - center[j], 2)
}
dist = Math.sqrt(dist)
t.ok(Math.abs(dist - Math.exp(controller.computedRadius[0])) < 1e-4, 'distance:' + controller.computedRadius + " expect " + dist)
}
for(var i=0; i<100; ++i) {
var center = [Math.random()-0.5, Math.random()-0.5, Math.random()-0.5]
var eye = [Math.random()-0.5, Math.random()-0.5, Math.random()-0.5]
var up = [Math.random()-0.5, Math.random()-0.5, Math.random()-0.5]
var mat = lookAt([], eye, center, up)
var controller = createOrbit()
controller.setMatrix(10, mat)
var orbitMat = controller.getMatrix(10, [])
t.ok(matrixApproxEquals(mat, orbitMat), 'compare mat: ' + mat + ' : ' + orbitMat)
var oeye = controller.computedEye
t.ok(arrayApproxEquals(eye, oeye), 'compare eye: ' + eye + ':' + oeye)
}
t.end()
})