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# QS8: Week 8 Survey Questions

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📗 Question 0

📗 Question 1

Question 2

📗 Question 3

Question 4

📗 Question 5

Question 6

📗 Question 7

Question 8

📗 Question 9

# Grade

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📗 [1 points] If let mesh = new THREE.Mesh();, which of the following are THREE.Vector3 objects?

mesh.up
mesh.position
mesh.scale
mesh.rotation
mesh.quaternion
None of the above.

📗 [1 points] Which of the following geometries are approximated by a collection of triangles (and fake normals)? Note: a cube does not need fake normals and does not need to be approximated.

THREE.SphereGeometry
THREE.ConeGeometry
THREE.CylinderGeometry
THREE.BoxGeometry
THREE.TetrahedronGeometry
None of the above.

📗 [1 points] Given the vertex list [0, 0, 0], [0, 2, 0], [0, 2, 2], [0, 0, 2], [0, 1, 1] for a THREE.BufferGeometry, which of the following face index sets will lead to T-junctions in the mesh?

[0, 1, 2], [0, 3, 4]
[0, 1, 2], [2, 3, 4]
[0, 3, 4], [2, 3, 4]
[0, 1, 2], [0, 2, 3]
[0, 1, 2], [0, 3, 2]
None of the above.

📗 [1 points] Given the vertex list [0, 0, 0], [0, 2, 0], [0, 2, 2], [0, 0, 2] for a THREE.BufferGeometry and one triangle with face indices [0, 1, 2] is visible to the camera. Which of the following triangles will also visible to the same camera?

[1, 2, 3]
[2, 3, 0]
[3, 0, 2]
[2, 0, 3]
[3, 2, 1]
None of the above.

📗 [1 points] Which of the following are attributes of a THREE.BufferGeometry?

"position"
"normal"
"color"
"scale"
"rotation"
None of the above.

📗 [1 points] Given a THREE.BufferGeometry with four vertices and three triangles (vertex list of size 4 and face index set of size 3), how many different colors can be set for the "color" attribute of the geometry? Select all possible answers.

None of the above.

📗 [1 points] Given a THREE.BufferGeometry with four vertices and three triangles (vertex list of size 4 and face index set of size 3), what is the appropriate length of the uv array, uv = new Float32Array([u0, v0, u1, v1, ...])? Select one answer.

None of the above.

📗 [1 points] Given a texture image for an American flag (with the 50 stars on the top left corner), which of the following UV attribute lists for a THREE.BufferGeometry will have all 50 stars on one triangle?

[0, 0], [1, 1], [0, 1]
[0, 0], [1, 0], [0, 1]
[0, 0], [1, 0], [1, 1]
[1, 0], [1, 1], [0, 1]
[0, 0], [1, 1], [0, 0]
None of the above.

📗 [1 points] Please provide additional comments, questions, or feedback:

📗 [1 points] Have you completed the in-class quiz on TopHat?

Note: if you selected the second or third choice, you will get the same grade from this survey for the in-class quiz; if you selected the forth choice, you only have to complete the last question.

# QS8: Week 8 Survey Questions

# Grade

# Submission