Using Cameras to Capture the Scene
Scenes do a great job of keeping track of everything, but they don’t show us what’s happening. To see anything in the scene, we need a camera. Notice the following code in ICE:
| | // This is what sees the stuff: |
| | var aspect_ratio = window.innerWidth / window.innerHeight; |
| | var camera = new THREE.PerspectiveCamera(75, aspect_ratio, 1, 10000); |
| | camera.position.z = 500; |
| | scene.add(camera); |
The purpose of the aspect_ratio is to determine the shape of the browser. This is the same thing as aspect ratios for movie screens and TV sets. A large TV with a 4:3 aspect ratio might be four meters wide and three meters tall (OK that’s a really large TV). An even larger 4:3 screen might be twelve meters wide and nine ...
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