BabylonJS - 立方體紋理

現在我們將瞭解如何使用立方體進行紋理處理。

語法

material.reflectionTexture = new BABYLON.CubeTexture("images/cubetexture/1", scene);

它將圖片作為紋理以及必須附加到的場景。

演示

<!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 = BABYLON.Color3.Black();
            var camera = new BABYLON.ArcRotateCamera("Camera", -Math.PI/2, 0, 0, BABYLON.Vector3.Zero(), scene);
            var light = new BABYLON.PointLight("Omni0", new BABYLON.Vector3(250, 250, 50), scene);

            camera.setPosition(new BABYLON.Vector3(0, 0, 8));
            camera.upperBetaLimit = Math.PI/2;
            camera.lowerBetaLimit = Math.PI/2;
            camera.attachControl(canvas);

            var box = BABYLON.Mesh.CreateBox("box", 2, scene);

            // box material
            material = new BABYLON.StandardMaterial("bab5", scene);
            material.emissiveColor = new BABYLON.Color3(1, 1, 0);
            material.specularColor = new BABYLON.Color3(1, 1, 0);

            box.material = material;

            var sphere = BABYLON.Mesh.CreateSphere("sphere",32, 5, scene);

            // sphere material
            material = new BABYLON.StandardMaterial("kosh5", scene);
            material.diffuseColor = new BABYLON.Color3(0, 0, 0);
            material.reflectionTexture = new BABYLON.CubeTexture("images/cubetexture/1", scene);
            material.reflectionTexture.level = 1;
            material.specularPower = 150;
            material.emissiveColor = new BABYLON.Color3(0.05, 0.05, 0.05);
            material.alpha = 0.8;

            sphere.material = material;

            scene.registerBeforeRender(function() {
               box.rotation.z += 0.01;
               camera.alpha += 0.002;
            });
            return scene;
         };
         var scene = createScene();
         engine.runRenderLoop(function() {
            scene.render();
         });
      </script>
   </body>
</html>

輸出

上述程式碼行生成以下輸出 −

解釋

在上述示例中，我們使用了 cubetexture。立方體有 6 個面，因此所使用的影像具有以下名稱 −

1_nx.jpg
1_ny.jpg
1_nz.jpg
1_px.jpg
1_py.jpg
1_pz.jpg

一個立方體需要六個影像。這些影像儲存在 images/cubetexture/nameoftheimage 的本地位置。你可以下載你選擇的任何影像，但在儲存時，將其儲存為 nameoftheimage_nx、nameoftheimage_ny、nameoftheimage_nx、nameoftheimage_px、nameoftheimage_py、nameoftheimage_pz。請注意，所選影像應按順序排列，使背景看起來逼真。

images/cubetexture/1

影像如下所示 −

1_nx.jpg

1_ny.jpg

1_nz.jpg

1_px.jpg

1_py.jpg

1_pz.jpg

babylonjs_mesh.htm

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