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VglCameraHelper

This helps with visualizing what a camera contains in its frustum, corresponding THREE.CameraHelper. It visualizes the frustum of a camera using a LineSegments.

Properties of VglObject3d are also available as mixin.

props

  • camera name (required)

    Name of the camera to visualize.

data

  • exist

    If camera specified by the name exists or not. Do not set this data manually.

initial value: false

computed properties

  • inst

    The THREE.CameraHelper instance. If any cameras specified by the name, it returns a THREE.Object3D instance.

    dependencies: exist, vglNamespace, camera

methods

  • update(camera)

    Update the helper geometry for given camera object.

Example

<template>
  <div>
    <vgl-renderer
      antialias
      camera="view"
    >
      <vgl-scene>
        <vgl-camera-helper camera="shown" />
      </vgl-scene>
      <vgl-perspective-camera
        name="view"
        orbit-position="0.8 1 1"
        orbit-target="0 0 -0.3"
      />
      <vgl-perspective-camera
        name="shown"
        :far="far"
        :fov="fov"
        :near="near"
      />
    </vgl-renderer>

    <aside class="control-panel">
      <label>Fov<input
        v-model="fov"
        type="range"
        max="90"
      ></label>
      <label>Far<input
        v-model="far"
        type="range"
        max="1"
        step="0.01"
      ></label>
      <label>Near<input
        v-model="near"
        type="range"
        max="0.1"
        step="0.001"
      ></label>
    </aside>
  </div>
</template>

<script>
export default {
  data: () => ({
    fov: 50,
    near: 0.05,
    far: 0.5,
  }),
};
</script>