Wrote notes on the spec for the two apply scripts which will put the calibration data into action.

fourcell/README.md

@@ -32,4 +32,23 @@ _______________  _______________
 | 5         6 |  | 4         5 |
 |             |  |             |
 ---------------  ---------------
-```
+```
+
+
+## Calibration Layout Order
+
+```   
+_______________  _______________ 
+|             |  |             |
+| 1   2 3   0 |  |             |
+|             |  |   1     2   |
+|             |  |             |
+| 0   3 2   1 |  |             |
+|             |  |             |
+| 1   2 3   0 |  |             |
+|             |  |             |
+|             |  |   0      3  |
+| 0   3 2   1 |  |             |
+|             |  |             |
+---------------  ---------------
+```

fourcell/notes/affine_poc.py

@@ -0,0 +1,29 @@
+import cv2
+import numpy as np
+
+#outer template
+outer = cv2.imread("graph.jpeg")
+#inner image
+inner = cv2.imread("emoji.jpeg")
+
+rows, cols, ch = outer.shape
+ir, ic, ich = inner.shape
+
+print(f'{cols}x{rows}')
+print(f'{ic}x{ir}')
+
+# destination ponts on outer image
+pts1 = np.float32([[15, 15], [200, 30], [50, 140]])
+
+# corresponding points on inner image
+pts2 = np.float32([[0, 0], [ic, 0], [0, ir]])
+
+# transform inner to points on outer
+M = cv2.getAffineTransform(pts2, pts1)
+
+# apply
+dst = cv2.warpAffine(inner, M, (cols, rows), borderMode=cv2.BORDER_TRANSPARENT)
+
+final = outer.copy()
+final[0:rows, 0:cols] = dst
+cv2.imwrite("affine_poc.png", final)

fourcell/notes/spec.txt

@@ -0,0 +1,34 @@
+# apply_images
+
+* Take calibration json as argument
+* Create blank image of width and height
+* Place idealized circles where hole punches are supposed to be
+* Place fiducials in corners of images
+* Take up to 4 images as arguments
+* Perform AffineTransform on as many source locations as needed
+* Place images according to AffineTransform
+* Write final image out
+
+### Potentials needs
+
+* One time xy offset, calibrated to hole punches
+* Hole punch several sheets at the same time, calibrate to one and print on them
+* OR
+* Calibrate, then print on un-punched sheets and place guides for punching
+* (this may be less reliable)
+
+# apply_svg
+
+* Create svg document scaling width and height to 96dpi equivalent
+* Normalize all measurements to 96dpi equivalent
+* Place idealized circles where hole punches are supposed to be
+* Take up to 4 svg files as arguments
+* Find best fit for svg within 4 frames, rotation, scale and position
+* Place or embed or re-write svg within frame, one at a time
+* Write out final svg
+
+
+### Potential needs
+
+* One time xy offset, calibrated to hole punches
+* Special board to draw this on (as opposed to free form mat)