ThreeJS计算物体包围盒尺寸

物体包围盒尺寸"/>

ThreeJS计算物体包围盒尺寸

计算图形包围盒尺寸。

 
function computeScale(geometry) {geometryputeBoundingBox();var maxX = geometry.boundingBox.max.x;var minX = geometry.boundingBox.min.x;var maxY = geometry.boundingBox.max.y;var minY = geometry.boundingBox.min.y;var maxZ = geometry.boundingBox.max.z;var minZ = geometry.boundingBox.min.z;var maxDis = Math.sqrt((maxX - minX) * (maxX - minX) + (maxY - minY) * (maxY - minY) + (maxZ - minZ) * (maxZ - minZ)) / 2;var scale = 1.0 / maxDis;return scale;
}然后在模型的loader写geometryputeVertexNormals();geometry.center();material = new THREE.MeshPhongMaterial({color: 0xffff00, shading: THREE.SmoothShading});mesh = new THREE.Mesh(geometry, material);var scale = computeScale(geometry);mesh.scale.multiplyScalar(scale);mesh.position.set(0, 0, 0);scene.add(mesh);