Учебники

BabylonJS — VectorPosition и Вращение

Февраль 8, 2019

Запустите демонстрационные ссылки, приведенные ниже в вашем браузере. В демонстрациях, приведенных ниже, мы нарисовали оси X, Y и Z. На оси x, y и z нанесены числа в положительном и отрицательном направлении. Запустите то же самое в браузере, измените значения в случае необходимости, нарисуйте фигуры, сетки, расположите их и посмотрите, как они отображаются в осях x, y и z. С числами, указанными на осях x, y и z, будет полезно посмотреть, как выполняется позиционирование меша.

демонстрация 

<!doctype html>
<html>
   <head>
      <meta charset = "utf-8">
      <title>BabylonJs - Basic Element-Creating Scene</title>
      <script src = "babylon.js"></script>
      <style>
         canvas {width: 100%; height: 100%;}
      </style>
   </head>

   <body>
      <canvas id = "renderCanvas"></canvas>
      <script type = "text/javascript">
         var canvas = document.getElementById("renderCanvas");
         var engine = new BABYLON.Engine(canvas, true);
         var createScene  = function() {
            var scene = new BABYLON.Scene(engine);
            scene.clearColor = new BABYLON.Color3( .5, .5, .5);

            // camera
            var camera = new BABYLON.ArcRotateCamera("camera1",  0, 0, 0, new BABYLON.Vector3(5, 3, 0), scene);
            camera.setPosition(new BABYLON.Vector3(5, 10, -10));
            camera.attachControl(canvas, true);
            
            // lights
            var light = new BABYLON.HemisphericLight("light1", new BABYLON.Vector3(1, 0.5, 0), scene);
            light.intensity = 0.8;
            var spot = new BABYLON.SpotLight(
               "spot", 
               new BABYLON.Vector3(25, 15, -10), 
               new BABYLON.Vector3(-1, -0.8, 1), 15, 1, scene);
            spot.diffuse = new BABYLON.Color3(1, 1, 1);
            spot.specular = new BABYLON.Color3(0, 0, 0);
            spot.intensity = 0.2; 
            
            // material
            var mat = new BABYLON.StandardMaterial("mat1", scene);
            mat.alpha = 1.0;
            mat.diffuseColor = new BABYLON.Color3(0.5, 0.5, 1.0);
            mat.backFaceCulling = false;
            //mat.wireframe = true;

            // show axis
            var showAxis = function(size) {
               var makeTextPlane = function(text, color, size) {
                  var dynamicTexture = new BABYLON.DynamicTexture("DynamicTexture", 50, scene, true);
                  dynamicTexture.hasAlpha = true;
                  dynamicTexture.drawText(text, 5, 40, "bold 36px Arial", color , "transparent", true);
                  
                  var plane = new BABYLON.Mesh.CreatePlane("TextPlane", size, scene, true);
                  plane.material = new BABYLON.StandardMaterial("TextPlaneMaterial", scene);
                  plane.material.backFaceCulling = false;
                  
                  plane.material.specularColor = new BABYLON.Color3(0, 0, 0);
                  plane.material.diffuseTexture = dynamicTexture;
                  return plane;
               };

               var axisX = BABYLON.Mesh.CreateLines("axisX", [ 
                  new BABYLON.Vector3(-size * 0.95, 0.05 * size, 0),
                  new BABYLON.Vector3(-size, 0, 0), 
                  new BABYLON.Vector3(-size * 0.95, -0.05 * size, 0),
                  new BABYLON.Vector3(-size, 0, 0),
                  new BABYLON.Vector3.Zero(), 
                  new BABYLON.Vector3(size, 0, 0), 
                  new BABYLON.Vector3(size * 0.95, 0.05 * size, 0), 
                  new BABYLON.Vector3(size, 0, 0), 
                  new BABYLON.Vector3(size * 0.95, -0.05 * size, 0)
               ], scene);
               
               axisX.color = new BABYLON.Color3(1, 0, 0);
               var xChar = makeTextPlane("X", "red", size / 10);
               xChar.position = new BABYLON.Vector3(0.9 * size, -0.05 * size, 0);

               var xChar1 = makeTextPlane("-X", "red", size / 10);
               xChar1.position = new BABYLON.Vector3(-0.9 * size, 0.05 * size, 0);

               var axisY = BABYLON.Mesh.CreateLines("axisY", [
                  new BABYLON.Vector3( -0.05 * size, -size * 0.95, 0),
                  new BABYLON.Vector3(0, -size, 0),
                  new BABYLON.Vector3(0.05 * size, -size * 0.95, 0),
                  new BABYLON.Vector3(0, -size, 0), 
                  new BABYLON.Vector3.Zero(), 
                  new BABYLON.Vector3(0, size, 0), 
                  new BABYLON.Vector3( -0.05 * size, size * 0.95, 0), 
                  new BABYLON.Vector3(0, size, 0), 
                  new BABYLON.Vector3( 0.05 * size, size * 0.95, 0)
               ], scene);
               
               axisY.color = new BABYLON.Color3(0, 1, 0);
               var yChar = makeTextPlane("Y", "green", size / 10);
               yChar.position = new BABYLON.Vector3(0, 0.9 * size, -0.05 * size);
               var yChar1 = makeTextPlane("-Y", "green", size / 10);
               yChar1.position = new BABYLON.Vector3(0, -0.9 * size, 0.05 * size);

               var axisZ = BABYLON.Mesh.CreateLines("axisZ", [
                  new BABYLON.Vector3( 0 , -0.05 * size, -size * 0.95), 
                  new BABYLON.Vector3(0, 0, -size),
                  new BABYLON.Vector3( 0 , 0.05 * size, -size * 0.95),
                  new BABYLON.Vector3(0, 0, -size), 
                  new BABYLON.Vector3.Zero(), 
                  new BABYLON.Vector3(0, 0, size), 
                  new BABYLON.Vector3( 0 , -0.05 * size, size * 0.95),
                  new BABYLON.Vector3(0, 0, size), 
                  new BABYLON.Vector3( 0, 0.05 * size, size * 0.95)
               ], scene);
               
               axisZ.color = new BABYLON.Color3(0, 0, 1);
               var zChar = makeTextPlane("Z", "blue", size / 10);
               zChar.position = new BABYLON.Vector3(0, 0.05 * size, 0.9 * size);
               var zChar1 = makeTextPlane("-Z", "blue", size / 10);
               zChar1.position = new BABYLON.Vector3(0, 0.05 * size, -0.9 * size);
            };
            showAxis(10);
            return scene;
         };
         var scene = createScene();
         engine.runRenderLoop(function() {
            scene.render();
         });
      </script>
   </body>
</html>

Выход

Вектор

Пусть координаты определены вдоль осей x, y и z.

демонстрация 

<!doctype html>
<html>
   <head>
      <meta charset = "utf-8">
      <title>BabylonJs - Basic Element-Creating Scene</title>
      <script src = "babylon.js"></script>
      <style>
         canvas {width: 100%; height: 100%;}
      </style>
   </head>

   <body>
      <canvas id = "renderCanvas"></canvas>
      <script type = "text/javascript">
         var canvas = document.getElementById("renderCanvas");
         var engine = new BABYLON.Engine(canvas, true);
         var createScene  = function() {
            var scene = new BABYLON.Scene(engine);
            scene.clearColor = new BABYLON.Color3( .5, .5, .5);

            // camera
            var camera = new BABYLON.ArcRotateCamera("camera1",  0, 0, 0, new BABYLON.Vector3(5, 3, 0), scene);
            camera.setPosition(new BABYLON.Vector3(5, 10, -10));
            camera.attachControl(canvas, true);
            
            // lights
            var light = new BABYLON.HemisphericLight("light1", new BABYLON.Vector3(1, 0.5, 0), scene);
            light.intensity = 0.8;
            var spot = new BABYLON.SpotLight(
               "spot", new BABYLON.Vector3(25, 15, -10), 
               new BABYLON.Vector3(-1, -0.8, 1), 15, 1, scene);
            spot.diffuse = new BABYLON.Color3(1, 1, 1);
            spot.specular = new BABYLON.Color3(0, 0, 0);
            spot.intensity = 0.2; 
            
            // material
            var mat = new BABYLON.StandardMaterial("mat1", scene);
            mat.alpha = 1.0;
            mat.diffuseColor = new BABYLON.Color3(0.5, 0.5, 1.0);
            mat.backFaceCulling = false;
            
            //mat.wireframe = true;
            var makeTextPlane = function(text, color, size) {
               var dynamicTexture = new BABYLON.DynamicTexture("DynamicTexture", 50, scene, true);
               dynamicTexture.hasAlpha = true;
               dynamicTexture.drawText(text, 5, 40, "bold 36px Arial", color , "transparent", true);
               
               var plane = new BABYLON.Mesh.CreatePlane("TextPlane", size, scene, true);
               plane.material = new BABYLON.StandardMaterial("TextPlaneMaterial", scene);
               plane.material.backFaceCulling = false;
               plane.material.specularColor = new BABYLON.Color3(0, 0, 0);
               plane.material.diffuseTexture = dynamicTexture;
               return plane;
            };
            
            // show axis
            var showAxis = function(size) {
               var axisX = BABYLON.Mesh.CreateLines("axisX", [ 
                  new BABYLON.Vector3(-size * 0.95, 0.05 * size, 0),
                  new BABYLON.Vector3(-size, 0, 0), 
                  new BABYLON.Vector3(-size * 0.95, -0.05 * size, 0),
                  new BABYLON.Vector3(-size, 0, 0),
                  new BABYLON.Vector3.Zero(), 
                  new BABYLON.Vector3(size, 0, 0), 
                  new BABYLON.Vector3(size * 0.95, 0.05 * size, 0), 
                  new BABYLON.Vector3(size, 0, 0), 
                  new BABYLON.Vector3(size * 0.95, -0.05 * size, 0)
               ], scene);
               axisX.color = new BABYLON.Color3(1, 0, 0);
               var xChar = makeTextPlane("X", "red", size / 10);
               xChar.position = new BABYLON.Vector3(0.9 * size, -0.05 * size, 0);

               var xChar1 = makeTextPlane("-X", "red", size / 10);
               xChar1.position = new BABYLON.Vector3(-0.9 * size, 0.05 * size, 0);
               var xcor = [];
               for (i =- 10; i <= 10; i++) {
                  xcor[i] = makeTextPlane(i, "red", size / 10);
                  xcor[i].position = new BABYLON.Vector3(i, 0, 0);
               }

               var axisY = BABYLON.Mesh.CreateLines("axisY", [
                  new BABYLON.Vector3( -0.05 * size, -size * 0.95, 0),
                  new BABYLON.Vector3(0, -size, 0),
                  new BABYLON.Vector3(0.05 * size, -size * 0.95, 0),
                  new BABYLON.Vector3(0, -size, 0), 
                  new BABYLON.Vector3.Zero(), 
                  new BABYLON.Vector3(0, size, 0), 
                  new BABYLON.Vector3( -0.05 * size, size * 0.95, 0), 
                  new BABYLON.Vector3(0, size, 0), 
                  new BABYLON.Vector3( 0.05 * size, size * 0.95, 0)
               ], scene);
               
               axisY.color = new BABYLON.Color3(0, 1, 0);
               var yChar = makeTextPlane("Y", "green", size / 10);
               yChar.position = new BABYLON.Vector3(0, 0.9 * size, -0.05 * size);
               var yChar1 = makeTextPlane("-Y", "green", size / 10);
               yChar1.position = new BABYLON.Vector3(0, -0.9 * size, 0.05 * size);

               var ycor = [];
               for (y=-10;y<=10;y++) {
                  xcor[y] = makeTextPlane(y, "green", size / 10);
                  xcor[y].position = new BABYLON.Vector3(0, y, 0);
               }		

               var axisZ = BABYLON.Mesh.CreateLines("axisZ", [
                  new BABYLON.Vector3( 0 , -0.05 * size, -size * 0.95), 
                  new BABYLON.Vector3(0, 0, -size),
                  new BABYLON.Vector3( 0 , 0.05 * size, -size * 0.95),
                  new BABYLON.Vector3(0, 0, -size), 
                  new BABYLON.Vector3.Zero(), 
                  new BABYLON.Vector3(0, 0, size), 
                  new BABYLON.Vector3( 0 , -0.05 * size, size * 0.95),
                  new BABYLON.Vector3(0, 0, size), 
                  new BABYLON.Vector3( 0, 0.05 * size, size * 0.95)
               ], scene);
               
               axisZ.color = new BABYLON.Color3(0, 0, 1);
               var zChar = makeTextPlane("Z", "blue", size / 10);
               zChar.position = new BABYLON.Vector3(0, 0.05 * size, 0.9 * size);
               var zChar1 = makeTextPlane("-Z", "blue", size / 10);
               zChar1.position = new BABYLON.Vector3(0, 0.05 * size, -0.9 * size);

               var zcor = [];
               for (z =- 10; z <= 10; z++) {
                  xcor[z] = makeTextPlane(z, "green", size / 10);
                  xcor[z].position = new BABYLON.Vector3(0, 0, z);
               }
            };	

            //Lets draw a mesh along the axis.

            var spriteManagerPlayer = new BABYLON.SpriteManager("playerManager", "images/bird.png", 1, 200, scene);
            var player = new BABYLON.Sprite("player", spriteManagerPlayer);
            player.position.x = 2;
            player.position.y = 2;	
            player.position.z = 0;	

            var zChardot = makeTextPlane(".", "red", 1);		
            zChardot.position = new BABYLON.Vector3(1.8, 1.8,0);

            var box = BABYLON.Mesh.CreateBox("box", '2', scene);
            box.position = new BABYLON.Vector3(-5,3,0); // center point of box x-axis is -5 and y axis is 3.

            var box = BABYLON.Mesh.CreateBox("box", '2', scene);
            box.position = new BABYLON.Vector3(0,3,-3); // center point of box x-axis is -5 and y axis is 3.

            var redSphere = BABYLON.Mesh.CreateSphere("red", 32, 1, scene); //no position for sphere so by default it takes 0,0,0
            showAxis(10);
            returnscene;
         };
         var scene = createScene();
         engine.runRenderLoop(function() {
            scene.render();
         });
      </script>
   </body>
</html>

Выход

Выше строка кода генерирует следующий вывод —

В этой демонстрации мы использовали изображение bird.png. Изображения хранятся в папке images / локально, а также вставляются ниже для справки. Вы можете скачать любое изображение по вашему выбору и использовать в демонстрационной ссылке.

Изображения / bird.png

птица

Координаты Vetex

демонстрация 

<!doctype html>
<html>
   <head>
      <meta charset = "utf-8">
      <title>BabylonJs - Basic Element-Creating Scene</title>
      <script src = "babylon.js"></script>
      <style>
         canvas {width: 100%; height: 100%;}
      </style>
   </head>

   <body>
      <canvas id = "renderCanvas"></canvas>
      <script type = "text/javascript">
         var canvas = document.getElementById("renderCanvas");
         var engine = new BABYLON.Engine(canvas, true);
         var createScene  = function() {
            var scene = new BABYLON.Scene(engine);
            scene.clearColor = new BABYLON.Color3( .5, .5, .5);

            // camera
            var camera = new BABYLON.ArcRotateCamera("camera1",  0, 0, 0, new BABYLON.Vector3(5, 3, 0), scene);
            camera.setPosition(new BABYLON.Vector3(5, 10, -10));
            camera.attachControl(canvas, true);
            
            // lights
            var light = new BABYLON.HemisphericLight("light1", new BABYLON.Vector3(1, 0.5, 0), scene);
            light.intensity = 0.8;
            
            var spot = new BABYLON.SpotLight(
               "spot", 
               new BABYLON.Vector3(25, 15, -10), 
               new BABYLON.Vector3(-1, -0.8, 1), 15, 1, scene);
            spot.diffuse = new BABYLON.Color3(1, 1, 1);
            spot.specular = new BABYLON.Color3(0, 0, 0);
            spot.intensity = 0.2; 
            
            // material
            var mat = new BABYLON.StandardMaterial("mat1", scene);
            mat.alpha = 1.0;
            mat.diffuseColor = new BABYLON.Color3(0.5, 0.5, 1.0);
            mat.backFaceCulling = false;
            
            //mat.wireframe = true;
            var makeTextPlane = function(text, color, size) {
               var dynamicTexture = new BABYLON.DynamicTexture("DynamicTexture", 50, scene, true);
               dynamicTexture.hasAlpha = true;
               dynamicTexture.drawText(text, 5, 40, "bold 36px Arial", color , "transparent", true);
               var plane = new BABYLON.Mesh.CreatePlane("TextPlane", size, scene, true);
               plane.material = new BABYLON.StandardMaterial("TextPlaneMaterial", scene);
               plane.material.backFaceCulling = false;
               plane.material.specularColor = new BABYLON.Color3(0, 0, 0);
               plane.material.diffuseTexture = dynamicTexture;
               return plane;
            };
            
            // show axis
            var showAxis = function(size) {	
               var axisX = BABYLON.Mesh.CreateLines("axisX", [ 
                  new BABYLON.Vector3(-size * 0.95, 0.05 * size, 0),
                  new BABYLON.Vector3(-size, 0, 0), 
                  new BABYLON.Vector3(-size * 0.95, -0.05 * size, 0),
                  new BABYLON.Vector3(-size, 0, 0),
                  new BABYLON.Vector3.Zero(), 
                  new BABYLON.Vector3(size, 0, 0), 
                  new BABYLON.Vector3(size * 0.95, 0.05 * size, 0), 
                  new BABYLON.Vector3(size, 0, 0), 
                  new BABYLON.Vector3(size * 0.95, -0.05 * size, 0)], scene);
               axisX.color = new BABYLON.Color3(1, 0, 0);
               var xChar = makeTextPlane("X", "red", size / 10);
               xChar.position = new BABYLON.Vector3(0.9 * size, -0.05 * size, 0);

               var xChar1 = makeTextPlane("-X", "red", size / 10);
               xChar1.position = new BABYLON.Vector3(-0.9 * size, 0.05 * size, 0);
               var xcor = [];
               for (i =- 10; i <= 10; i++) {
                  xcor[i] = makeTextPlane(i, "red", size / 10);
                  xcor[i].position = new BABYLON.Vector3(i, 0, 0);
               }

               var axisY = BABYLON.Mesh.CreateLines("axisY", [
                  new BABYLON.Vector3( -0.05 * size, -size * 0.95, 0),
                  new BABYLON.Vector3(0, -size, 0),
                  new BABYLON.Vector3(0.05 * size, -size * 0.95, 0),
                  new BABYLON.Vector3(0, -size, 0), 
                  new BABYLON.Vector3.Zero(), 
                  new BABYLON.Vector3(0, size, 0), 
                  new BABYLON.Vector3( -0.05 * size, size * 0.95, 0), 
                  new BABYLON.Vector3(0, size, 0), 
                  new BABYLON.Vector3( 0.05 * size, size * 0.95, 0)
               ], scene);
               
               axisY.color = new BABYLON.Color3(0, 1, 0);
               var yChar = makeTextPlane("Y", "green", size / 10);
               yChar.position = new BABYLON.Vector3(0, 0.9 * size, -0.05 * size);
               var yChar1 = makeTextPlane("-Y", "green", size / 10);
               yChar1.position = new BABYLON.Vector3(0, -0.9 * size, 0.05 * size);

               var ycor = [];
               for (y =- 10; y <= 10; y++) {
                  xcor[y] = makeTextPlane(y, "green", size / 10);
                  xcor[y].position = new BABYLON.Vector3(0, y, 0);
               }

               var axisZ = BABYLON.Mesh.CreateLines("axisZ", [
                  new BABYLON.Vector3( 0 , -0.05 * size, -size * 0.95), 
                  new BABYLON.Vector3(0, 0, -size),
                  new BABYLON.Vector3( 0 , 0.05 * size, -size * 0.95),
                  new BABYLON.Vector3(0, 0, -size), 
                  new BABYLON.Vector3.Zero(), 
                  new BABYLON.Vector3(0, 0, size), 
                  new BABYLON.Vector3( 0 , -0.05 * size, size * 0.95),
                  new BABYLON.Vector3(0, 0, size), 
                  new BABYLON.Vector3( 0, 0.05 * size, size * 0.95)
               ], scene);
               axisZ.color = new BABYLON.Color3(0, 0, 1);
               var zChar = makeTextPlane("Z", "blue", size / 10);
               zChar.position = new BABYLON.Vector3(0, 0.05 * size, 0.9 * size);
               var zChar1 = makeTextPlane("-Z", "blue", size / 10);
               zChar1.position = new BABYLON.Vector3(0, 0.05 * size, -0.9 * size);

               var zcor = [];
               for (z =- 10; z <= 10; z++) {
                  xcor[z] = makeTextPlane(z, "green", size / 10);
                  xcor[z].position = new BABYLON.Vector3(0, 0, z);
               }
            };

            var kite = BABYLON.Mesh.CreateLines("kite", [
               new BABYLON.Vector3(-4,0,0),
               new BABYLON.Vector3(0,4,0), 
               new BABYLON.Vector3(4,0,0), 
               new BABYLON.Vector3(0,-4,0),
               new BABYLON.Vector3(-4,0,0)
            ], scene);
            kite.color = new BABYLON.Color3(1, 1, 1);

            var path = [];
            path.push(new BABYLON.Vector3(-4, 0, 0));
            path.push(new BABYLON.Vector3(0, 0, 0));
            path.push(new BABYLON.Vector3(4, 0, 0));

            var lines1 = BABYLON.Mesh.CreateLines("lines",path, scene, true);
            lines1.color = new BABYLON.Color3(1, 1, 1);
            showAxis(10);	
            return scene;
         };
         var scene = createScene();
         engine.runRenderLoop(function() {
            scene.render();
         });
      </script>
   </body>
</html>

Выход

Приведенная выше строка кода сгенерирует следующий вывод:

Vectormode

Поворот вектора

Давайте теперь посмотрим, как работает вектор поворота.

демонстрация 

<!doctype html>
<html>
   <head>
      <meta charset = "utf-8">
      <title>BabylonJs - Basic Element-Creating Scene</title>
      <script src = "babylon.js"></script>
      <style>
         canvas {width: 100%; height: 100%;}
      </style>
   </head>

   <body>
      <canvas id = "renderCanvas"></canvas>
      <script type = "text/javascript">
         var canvas = document.getElementById("renderCanvas");
         var engine = new BABYLON.Engine(canvas, true);
         var createScene  = function() {
            var scene = new BABYLON.Scene(engine);
            scene.clearColor = new BABYLON.Color3( .5, .5, .5);

            // camera
            var camera = new BABYLON.ArcRotateCamera("camera1",  0, 0, 0, new BABYLON.Vector3(5, 3, 0), scene);
            camera.setPosition(new BABYLON.Vector3(0, 0, 0));
            camera.attachControl(canvas, true);
            
            // lights
            var light = new BABYLON.HemisphericLight("light1", new BABYLON.Vector3(1, 0.5, 0), scene);
            light.intensity = 0.8;
            var spot = new BABYLON.SpotLight(
               "spot", 
               new BABYLON.Vector3(25, 15, -10), 
               new BABYLON.Vector3(-1, -0.8, 1), 15, 1, scene);
            spot.diffuse = new BABYLON.Color3(1, 1, 1);
            spot.specular = new BABYLON.Color3(0, 0, 0);
            spot.intensity = 0.2; 
            
            // material
            var mat = new BABYLON.StandardMaterial("mat1", scene);
            mat.alpha = 1.0;
            mat.diffuseColor = new BABYLON.Color3(0.5, 0.5, 1.0);
            mat.backFaceCulling = false;
            
            //mat.wireframe = true;
            var makeTextPlane = function(text, color, size) {
               var dynamicTexture = new BABYLON.DynamicTexture("DynamicTexture", 50, scene, true);
               dynamicTexture.hasAlpha = true;
               dynamicTexture.drawText(text, 5, 40, "bold 36px Arial", color , "transparent", true);
               var plane = new BABYLON.Mesh.CreatePlane("TextPlane", size, scene, true);
               plane.material = new BABYLON.StandardMaterial("TextPlaneMaterial", scene);
               plane.material.backFaceCulling = false;
               plane.material.specularColor = new BABYLON.Color3(0, 0, 0);
               plane.material.diffuseTexture = dynamicTexture;
               return plane;
            };
            // show axis
            var showAxis = function(size) {
               var axisX = BABYLON.Mesh.CreateLines("axisX", [ 
                  new BABYLON.Vector3(-size * 0.95, 0.05 * size, 0),
                  new BABYLON.Vector3(-size, 0, 0), 
                  new BABYLON.Vector3(-size * 0.95, -0.05 * size, 0),
                  new BABYLON.Vector3(-size, 0, 0),
                  new BABYLON.Vector3.Zero(), 
                  new BABYLON.Vector3(size, 0, 0), 
                  new BABYLON.Vector3(size * 0.95, 0.05 * size, 0), 
                  new BABYLON.Vector3(size, 0, 0), 
                  new BABYLON.Vector3(size * 0.95, -0.05 * size, 0)
               ], scene);
               
               axisX.color = new BABYLON.Color3(1, 0, 0);
               var xChar = makeTextPlane("X", "red", size / 10);
               xChar.position = new BABYLON.Vector3(0.9 * size, -0.05 * size, 0);

               var xChar1 = makeTextPlane("-X", "red", size / 10);
               xChar1.position = new BABYLON.Vector3(-0.9 * size, 0.05 * size, 0);
               var xcor = [];
               for (i =- 10; i <= 10; i++) {
                  xcor[i] = makeTextPlane(i, "red", size / 10);
                  xcor[i].position = new BABYLON.Vector3(i, 0, 0);
               }

               var axisY = BABYLON.Mesh.CreateLines("axisY", [
                  new BABYLON.Vector3( -0.05 * size, -size * 0.95, 0),
                  new BABYLON.Vector3(0, -size, 0),
                  new BABYLON.Vector3(0.05 * size, -size * 0.95, 0),
                  new BABYLON.Vector3(0, -size, 0), 
                  new BABYLON.Vector3.Zero(), 
                  new BABYLON.Vector3(0, size, 0), 
                  new BABYLON.Vector3( -0.05 * size, size * 0.95, 0), 
                  new BABYLON.Vector3(0, size, 0), 
                  new BABYLON.Vector3( 0.05 * size, size * 0.95, 0)
               ], scene);
               
               axisY.color = new BABYLON.Color3(0, 1, 0);
               var yChar = makeTextPlane("Y", "green", size / 10);
               yChar.position = new BABYLON.Vector3(0, 0.9 * size, -0.05 * size);
               var yChar1 = makeTextPlane("-Y", "green", size / 10);
               yChar1.position = new BABYLON.Vector3(0, -0.9 * size, 0.05 * size);

               var ycor = [];
               for (y =- 10; y <= 10; y++) {
                  xcor[y] = makeTextPlane(y, "green", size / 10);
                  xcor[y].position = new BABYLON.Vector3(0, y, 0);
               }

               var axisZ = BABYLON.Mesh.CreateLines("axisZ", [
                  new BABYLON.Vector3( 0 , -0.05 * size, -size * 0.95), 
                  new BABYLON.Vector3(0, 0, -size),
                  new BABYLON.Vector3( 0 , 0.05 * size, -size * 0.95),
                  new BABYLON.Vector3(0, 0, -size), 
                  new BABYLON.Vector3.Zero(), 
                  new BABYLON.Vector3(0, 0, size), 
                  new BABYLON.Vector3( 0 , -0.05 * size, size * 0.95),
                  new BABYLON.Vector3(0, 0, size), 
                  new BABYLON.Vector3( 0, 0.05 * size, size * 0.95)
               ], scene);
               
               axisZ.color = new BABYLON.Color3(0, 0, 1);
               var zChar = makeTextPlane("Z", "blue", size / 10);
               zChar.position = new BABYLON.Vector3(0, 0.05 * size, 0.9 * size);
               var zChar1 = makeTextPlane("-Z", "blue", size / 10);
               zChar1.position = new BABYLON.Vector3(0, 0.05 * size, -0.9 * size);

               var zcor = [];
               for (z =- 10; z <= 10; z++) {
                  xcor[z] = makeTextPlane(z, "green", size / 10);
                  xcor[z].position = new BABYLON.Vector3(0, 0, z);
               }
            };

            var yellowSphere = BABYLON.Mesh.CreateSphere("yellowSphere",32, 1, scene);
            yellowSphere.setPivotMatrix(BABYLON.Matrix.Translation(2, 0, 0));
            var yellowMaterial = new BABYLON.StandardMaterial("yellowMaterial", scene);
            yellowMaterial.diffuseColor = BABYLON.Color3.Yellow();
            yellowSphere.material = yellowMaterial;

            var wheel1 = BABYLON.MeshBuilder.CreateTorus('t1', {diameter: 2.0}, scene);
            wheel1.position.x = -2.0
            wheel1.position.z = -2.0;

            showAxis(10);	
            var k = 0.0;
            var y = 0.0;
            var x = 0.0;
            scene.registerBeforeRender(function () {
               wheel1.rotation.copyFromFloats(0.0, 0.0, Math.PI / 2);
               wheel1.addRotation(0.0, y, 0.0); 
               wheel1.addRotation(x, 0.0, 0.0);
               yellowSphere.rotation.y += 0.01;
               y += 0.05; 
            });	
            return scene;
         };
         var scene = createScene();
         engine.runRenderLoop(function() {
            scene.render();
         });
      </script>
   </body>
</html>

Выход

Выше строка кода генерирует следующий вывод —

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