FloatImg sources upgraded to version 148

README.md

@@ -49,7 +49,7 @@ new_img = img.clone()
 new_img = img.clone(True)
 ```
 
-### Basic pixel manipulation
+### Basic pixel operations
 
 ```python
 # Get pixel value
@@ -65,7 +65,7 @@ img.clear()
 img.copy_data(another_img)
 ```
 
-### File manipulation
+### File operations
 
 #### Raw dump files
 
@@ -135,3 +135,18 @@ Ensure `floatimg` containing path is in the `PYTHONPATH`, this will run the test
 pytest --cov=floatimg tests/*
 ```
 
+### Status
+
+The goal is not to bind all the functions but essential ones too build a front-end with python-tkinter. 
+
+#### Done
+
+ - lib/fimg-core.c
+ - lib/fimg-file.c
+ - lib/operator.c
+ - funcs/exporter.c
+ - funcs/fimg-png.c
+
+#### Partial
+
+ - lib/fimg-math.c

floatimg/image.py

@@ -176,6 +176,9 @@ c_fimg_load_from_png = LIB.fimg_load_from_png
 c_fimg_load_from_png.argtypes = (ct.c_char_p, ct.POINTER(C_FloatImg))
 c_fimg_load_from_png.restype = ct.c_int
 
+c_fimg_get_maxvalue = LIB.fimg_get_maxvalue
+c_fimg_get_maxvalue.argtypes = (ct.POINTER(C_FloatImg),)
+c_fimg_get_maxvalue.restype = ct.c_float
 
 ############################################################################################################
 class FloatImg:
@@ -316,15 +319,16 @@ class FloatImg:
         """return a new image with minimum pixel values per channel between current and parameter"""
         res = self.clone(False)
         # C code inverts comparison
-        assert c_fimg_maximum(self.c_img_p, img.c_img_p, res.c_img_p) == 0
+        assert c_fimg_minimum(self.c_img_p, img.c_img_p, res.c_img_p) == 0
         return res
 
+
     #######################################################################################################
     def max(self, img):
         """return a new image with maximum pixel values per channel between current and parameter"""
         res = self.clone(False)
         # C code inverts comparison
-        assert c_fimg_minimum(self.c_img_p, img.c_img_p, res.c_img_p) == 0
+        assert c_fimg_maximum(self.c_img_p, img.c_img_p, res.c_img_p) == 0
         return res
 
     #######################################################################################################
@@ -337,6 +341,11 @@ class FloatImg:
             == 0
         )
 
+    #######################################################################################################
+    def maxvalue(self):
+        """return the maximum value for any channel in the image"""
+        return c_fimg_get_maxvalue(self.c_img_p)
+
 
 ###########################################################################################################
 def fileinfos(fname):

tests/maths.py

@@ -0,0 +1,12 @@
+"""test of core functions """
+
+import floatimg
+
+def test_maxvaalue():
+    width = 5
+    height = 5
+
+    img = floatimg.create_rgb(width, height)
+    color = (255.0, 255.0, 255.0)
+    img.put(2,2, color)
+    assert img.maxvalue() == 255.0