TactiPad – Drawing tools – Art & Science Templates: Polygon

The Regular Polygon Template

Photo: Heptagon polygon template
Photo: Heptagon polygon template (prototype 3D-print)

Detailed description of the regular polygon template

The set contains templates for regular polygons with five, six, seven, eight and nine corners referred to as pentagon, hexagon, heptagon, octagon and nonagon respectively. The radius of the polygons ranges from two to eight centimetres.

In a regular polygon all corners have the same angle. The corners are interconnected with lines that have all the same length. Another way to describe a polygon: A polygon consists of a number of equal leg triangles where the top corners of all equal legged triangles are at the same position. So they are arranged in a circle like slices of a pie. The distance from all corners to the centre point is the same.

The body of the tool is two centimetres wide. It is shaped as a triangle where one side is not present. It could be described as a jaw hook. The angle between the two sides is less than 90 degrees. Near to the rounded outside corner and near to the tips you find pushpin markers. One side of the polygon tool contains a number of wholes, indicating the number of corners of the particular polygon.

The side with the wholes is referred to as ‘radius side’. This radius side has a centimetre indication in the top surface and indents every half centimetre. The inner side of the side with the finger fitter to the far right is referred to as ‘drawing side’. The drawing side has the same number of indents as found on the radius side.

To construct the polygon, the pen position in the radius side has to correspond with the one in the drawing side, measured starting at the inner corner. As an example, a groove as a visual tactile clue ending at the four centimetre radius indication shows the direction to look for the corresponding indent in the drawing side and/or the respective bisectrix position. The value for the radius is measured starting at the inner sharp corner and increases towards the tip. The once selected position at the radius side is going to be the centre of the polygon.

At the outer side of the drawing side you find indents as well. They indicate the position for the bisectrix of the equal leg triangle. The outside corner in between the radius side and the drawing side is rounded to allow for alignment with the ruler; the distance from the sharp hook to the ruler remains the same when you move/rotate the polygon tool.

Utilising the regular polygon template

The regular polygon tools are mainly used to create these shapes. You can also create mandalas. You have to use at least one pushpin to mark the centre of the polygon. A second pushpin is handy to mark the position to draw to along the drawing side.


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    TactiPad – Drawing tools – Art & Science Templates: Rectangular hook / L-shape hook

    The rectangular hook / L-shape hook Template

    Photo: Rectangular hook / L-shaped hook
    Photo: Rectangular hook / L-shaped hook (prototype 3D-print)

    Detailed description of the rectangular hook template

    The two sides of the rectangular hook are under an angle of 90 degrees and are 10 centimetres long. The body of the tool is two centimetres wide. The corner between the sides is rounded at the outer side. The sides are ending with a 90 degree hook. Near the rounded corner and near to the tips, you find push pin markers.

    You find indents for 30, 45 and 90 degrees at the rounded corner for alignment with the ruler. There are centimetre indicators along the inner side on the top surface. The inner sides have indents every half centimetre. At the outer side you find indents to perform a 30 or 45 degree rotation in reference to the inside angle. On the outer sides, near to the tips you find a finger fitter for easy lifting or extra grip.

    Utilising the rectangular hook template

    When you drawing along the two sides towards the inner corner you create two lines with a 90 degree angle. When you connect the two endings of the previously created lines you will get an irregular triangle on the TactiPad. By rotating and/or mirroring a triangle, you can create shapes such as diamond or kite.


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      TactiPad – Drawing tools – Art & Science Templates: Triangle

      The equal sided Triangle Template

       Photo: The six centimetre equal sided triangle of the set
      Photo: The six centimetre equal sided triangle of the set (prototype 3D-print)

      Detailed description of the triangle template

      The templates for the triangles are of the type equal sided triangle. The length of the sides ranges from three to eight centimetres respectively. One outer corner is rounded, the other two are sharp. Along the outside you find indents at every centimetre. They correspond with the corners at the beginning/ending of the inner sides. The body of the triangle is about 12 millimetres wide. On the top surface, you find pushpin markers.

      The inner sides have an indent at their halfway position.

      On one of the outer sides you find a finger fitter for easy lifting or extra grip.

      Utilising the triangle template

      When you place the triangle template somewhere on the TactiPad in any orientation and then draw along the inner contour, you create your first triangle.

      With the equal sided triangle you can create other shapes: a rectangular triangle of 30, 60 or 90 degrees, a diamond and star.


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        TactiPad – Drawing tools – Art & Science Templates: Square

        The Square Template

        Photo: The four centimetre square of the set
        Photo: The four centimetre square of the set (prototype 3D-print)

        Detailed description of the square template

        The sizes of the squares ranges from two to ten centimetres. The frame that forms the square is one centimetre wide. So a four centimetre squared template has the inner dimension of four centimetres. The outside is six centimetres in square.

        Two diagonal opposite outside corners are sharp, there you can find the pushpin. The other two corners are rounded. Along the outside a small indent is provided at every centimetre. The inner side has an indent at the halfway position of each of the four sides. In two of the opposing outer sides you find finger fitters for easy lifting or extra grip.

        Utilising the square template

        When you position the square somewhere on the TactiPad in any orientation and then draw along the inner contour, you create your first square. With the square template you can create many more shapes such as diamond, parallelogram, trapezium, and also 3D shapes such as pyramid or cube.

         


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          Sharing tactile emojis

          As we mentioned in a previous newsletter, we created a few of the newly suggested emojis as tactile diagrams for our visitors of the 2019 ZieZo exhibition. They were very well received. We are happy to share the four designs with you. You can download the designs here.

          Please keep in mind that the images were created with TactileView and saved in .BPX format. In order to take full advantage of the tactile graphics you need a registered version of the software; printing them using the demo version will add some watermarks.

          Emoji of blind person with cane

          Emily Schlenker’s story

          Molecular structure of dopamine

          As blind students, drawing and the visual aspects of math and science are often dismissed as a waste of time or impossible. This totally disregards those students, like myself who happen to be visual learners. My brain thrives on pictures, in spite of the years of teachers and professors striving to cram me into the memorizer box that is assigned to blind learners.
          Once I got away from so-called blindness experts/educators, I entered the real academic world. I am completing my pre-med requirements, and my physics professor and tutor both made it clear that if I wanted to do physics, I would be exposed to drawings one way or another.

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          MDA initial idea

          MDA initial idea generation

          When we recently came across the first prototype of the compasses for the TactiPad, it got us thinking: what if we could motorise it? What if we used a motorised drawing arm to combine the best aspects of both the TactiPad drawing board and TactileView graphics software?

          [one_half]

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          Theo’s challenge for the MDA

          Theo and Jaap drawing a school logo with the MDA

          I was looking forward to finding out what progress had been made on the motorized drawing arm since I saw the prototype at Sight village last year.
          I heard that it could draw out pictures so I planned a test for it. First I downloaded a copy of my school logo (png file) onto my phone before Sight Village (2019).

          Read more

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