Putting 3D in Perspective Question 3: Verifying our Projection with Sight Lines

In this video I quickly go over how to verify if our 3D to 2D projection is correct, which I do so by adding sight lines in GeoGebra. These "sight lines" are just lines drawn connecting the coordinates of the camera and the projected points on the screen. If these sight lines intersect our clipped points along the 3D line, then it means our projection is indeed correct. This is because the clipped points are simply projected along a straight line from the camera to the screen. In the amazing GeoGebra 3D graphing calculator, we can quickly create sight lines by using the line segment function: https://www.geogebra.org/calculator/twezjbu5

The timestamps of key parts of the video are listed below:

• Question 3: Verifying the Projection with Sight Lines: 0:00
• Solution: 0:18
• Adding sight lines with GeoGebra: 1:31

This video was taken from my earlier video listed below:

• Laboratory Project: Putting 3D in Perspective: https://youtu.be/3txedAqdtkQ
• HIVE video notes: https://peakd.com/hive-128780/@mes/laboratory-project-putting-3d-in-perspective
• Video sections playlist: https://www.youtube.com/playlist?list=PLai3U8-WIK0ElsrMs_IBprUoHocIwyAmK

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Sequences and Series playlist: https://www.youtube.com/playlist?list=PLai3U8-WIK0FjJpwnxwdrOR7L8Ul8VZoZ .

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