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📗 [1 points] Which ones of the following functions have values between 0 and 500 for every t? 250 + 250 * Math.sin(t) 500 * Math.abs(Math.cos(t)) t % 500 250 + 250 * Math.abs(Math.cos(t)) 500 * Math.sin(t) None of the above.
📗 [1 points] Which ones of the following animation functions (position of a object as a function of time t) make the object move in a circle? [Math.sin(t), Math.cos(t)] [Math.sin(2 * t), Math.cos(2 * t)] [Math.sin(t), Math.cos(2 * t)] [Math.sin(2 * t), 2 * Math.cos(t)] [Math.sin(2 * t), Math.sin(2 * t)] None of the above.
📗 [1 points] Given a mouse click event at the top left corner of an HTML Canvas, and define let box = event.target.getBoundingClientRect();, which ones of the following will return 0? event.clientX - box.left event.clientX - box.top event.clientX - box.width event.clientX box.left None of the above.
📗 [1 points] Suppose the position of mouse click on an HTML Canvas is [x, y], which ones of the following draw a square centered at the mouse position. context.fillRect(x - 5, y - 5, 10, 10) context.fillRect(x, y, 10, 10) context.fillRect(x + 5, y + 5, 10, 10) context.fillRect(x + 5, y - 5, 10, 10) context.fillRect(x - 5, y + 5, 10, 10) None of the above.
📗 [1 points] Which ones of the following transformation combination is equivalent to context.translate(4, 4); context.scale(2, 2); if followed by context.fillRect(0, 0, 1, 1)? context.scale(2, 2); context.translate(2, 2); context.scale(2, 2); context.translate(1, 1); context.scale(2, 2); context.translate(8, 8); context.scale(4, 4); context.translate(2, 2); context.scale(4, 4); None of the above.
📗 [1 points] What is the area of a rectangle (number of pixels) drawn by context.scale(2, -3); context.fillRect(0, 0, 1, 2); context.scale(-1, 2); assuming no other transformations are done. 12 24 6 2 0 None of the above.
📗 [1 points] Which ones of the following transformations mirror reflects a drawing vertically (for example, letter b to letter p)? context.scale(1, -1) context.scale(-1, 1) context.rotate(Math.PI) context.rotate(-Math.PI) context.translate(-1, -1) None of the above.
📗 [1 points] Which ones of the following are rigid transformations? Translation Rotation Scaling by a positive number Scaling by a negative number Scaling by -1 None of the above.
📗 [1 points] Please provide additional comments, questions, or feedback:
📗 [1 points] Why are you submitting this survey? Did not attend one or both of the lectures this week. Attended both lectures but missed some questions on TopHat. Attended the lectures but TopHat did not work. Want to submit anonymous feedback.
Note: if you selected the third (please also email me) or forth choice, you only have to complete the last question.