回答編集履歴
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追記
test
CHANGED
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@@ -13,3 +13,63 @@
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また、以下のようなものもありましたので`BoxGeometry()`を元にしても作成できるのかもしれません。ご参考までに。
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https://threejs.org/examples/webgl_modifier_subdivision.html
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追記
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私の環境ですと以下のようなコードで角丸BOXが表示されましたがダメでしょうか？
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```
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//中略
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<script src="https://cdnjs.cloudflare.com/ajax/libs/three.js/89/three.min.js"></script>
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//中略
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var cubeGeometry = new createBoxWithRoundedEdges(300, 300, 300, 30, 2);
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var cubeMaterial = new THREE.MeshBasicMaterial({color: 0xff0000});
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var cube = new THREE.Mesh(cubeGeometry, cubeMaterial);
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//中略
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function createBoxWithRoundedEdges( width, height, depth, radius0, smoothness ) {
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let shape = new THREE.Shape();
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let eps = 0.00001;
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let radius = radius0 - eps;
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shape.absarc( eps, eps, eps, -Math.PI / 2, -Math.PI, true );
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shape.absarc( eps, height - radius * 2, eps, Math.PI, Math.PI / 2, true );
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shape.absarc( width - radius * 2, height - radius * 2, eps, Math.PI / 2, 0, true );
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shape.absarc( width - radius * 2, eps, eps, 0, -Math.PI / 2, true );
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let geometry = new THREE.ExtrudeBufferGeometry( shape, {
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amount: depth - radius0 * 2,
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bevelEnabled: true,
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bevelSegments: smoothness * 2,
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steps: 1,
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bevelSize: radius,
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bevelThickness: radius0,
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curveSegments: smoothness
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});
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```
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