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3D

You can use a computer to make images in 3D.  There are free programs that help you create objects in 3D, such as this pyrite cube. With that object, you can get more of a 3D effect by making two of those objects and viewing it with VR glasses, as in this 3D pyrite cube.

 

 

Stereoscopic animation of pyrite cube model.

Merge the two images by adjusting your eyes correctly to see in 3D (or use VR glasses with phone).

The left image corresponds to the perspective seen by the left eye, if looking at a real cube closeup. The right image corresponds to what your right eye sees.

Here is our gallery of Animated Stereograms in Scratch.

Even with Scratch alone, you can create 3D objects, such as this sphere of golden angle spirals, or this VR Moon.

But you will be a better artist, and understand 3D better, if you also can draw in 3D by hand.

The traditional way to draw by hand in 3D is perspective drawing. Here’s our simple example of 3-point perspective drawing in Scratch.

Perspective drawing is really fun to do in 3D. Showing different perspectives in two different colors means the image will jump out of the screen when you wear 3D red and blue glasses (really the blue is blue-green).  Click on our example of 3D perspective drawing in Scratch.

Here is a simpler 3D image you can move, using Scratch. Click here.  With your red and blue-green glasses, you can see 3D. Click the green flag and you can drag the circles left or right. If the blue-green circle is to the right of the other circle, the circle will pop out, when you wear the red and blue-green (cyan) 3D glasses.

You can drag one of the circles left or right but not up or down. The very simple code just adjusts the vertical position of the circles to be identical so that the two images stay in the same horizon. That way your eye can merge the two images.

This code creates a cube that you can turn.  The code draws two cubes, really two views of the same cube, but in two different colors that your red cyan glasses can filter out.  The code also allows you to alter the perspective, and that is a bit complex.  In this simple version, we did not add trigonometry. 

 

 

 

 

 Below are some sample images that you can view in 3D with your red and cyan glasses. 

Draw a circle in 3D (for red-cyan glasses)

Here’s a movie on how to draw a red and cyan circle so that it looks like it is jumping out at you when wearing your red-cyan 3D glasses.

First go to kleki.com. Then watch the below movie. Be sure to save your work frequently.

 

3D with Virtual Reality Glasses (with two clear lenses)

Today, there’s another kind of 3D glasses, often called VR (virtual reality) glasses, that uses two clear lenses. With these, each eye sees one image. The two images are slightly different. The left eye sees more of the left side of an object, and the right eye sees more of the right side. Look at the 3D stereograms below, say the pyrite cube, and notice that the left image shows more of the left side.  

 

3D Stereograms (use with glasses with two clear lenses)

 Below are several stereo images, using two images, one for each eye’s perspective. For these you use the clear lens glasses that come in your box.

The first image (real pyrite) we made ourselves by taking two photos with our phone. The first photo took from about where our left eye is, then we moved the phone over three inches to the right, to about where our right eye is and took another photo. Then we placed each side to side. The result is a 3D stereogram.  We used this method for several images in your subscription box.   

You can view these with the glasses attached to your phone. Click or touch the image to adjust size and position.