Added min and max values to HeightMap

src/HeightMap.cpp

@@ -21,12 +21,14 @@ HeightMap::HeightMap(const char* filepath)
     // The heigthmap only has one band
     auto band = file->GetBands()[0];
     // write the attrributes
-    this->x_size = band->GetXSize();
+    this->width = band->GetXSize();
-    this->y_size = band->GetYSize();
+    this->height = band->GetYSize();
+    this->min = band->GetMinimum();
+    this->max = band-> GetMaximum();
     
-    this->data = (float *) CPLMalloc(sizeof(float)*x_size*y_size);
+    this->data = (float *) CPLMalloc(sizeof(float)*width*height);
-    band->RasterIO( GF_Read, 0, 0, x_size, y_size,
+    band->RasterIO( GF_Read, 0, 0, width, height,
-                    this->data, x_size, y_size, GDT_Float32,
+                    this->data, width, height, GDT_Float32,
                     0, 0 );
     
     band->FlushCache();
@@ -34,6 +36,6 @@ HeightMap::HeightMap(const char* filepath)
 float HeightMap::get_pixel(int x, int y)
 {
     // all the pixels are in an array of floats from left to right, top to bottom
-    int offset = ((this->x_size * y) + x);
+    int offset = ((this->width * y) + x);
     return *(this->data + offset);
 } 

src/HeightMap.hh

@@ -5,8 +5,10 @@ class HeightMap
 {
     public:
         float* data;
-        int x_size; //!< x dimension in pixels
+        int width; //!< width of image in pixels
-        int y_size; //!< y dimension in pixels
+        int height; //!< height of image in pixels
+        float min; //!< Minimum value in image
+        float max; //!< Maximum value in image
 
         HeightMap(const char* filepath);
         float get_pixel(int x,int y);

src/main.cpp

@@ -1,18 +1,22 @@
 #include "HeightMap.hh"
 #include <iostream>
+#include <ostream>
 
 int main(int argc, const char* argv[])
 {
     const char* filepath = argv[1];
     HeightMap map(filepath); 
-    std::cout << "x: " << map.x_size << "    y: " << map.y_size << "\n";
+    
-    for (int y = 0; y < map.y_size; y++)
+    std::cout << "x: " << map.width << "    y: " << map.height << "\n";
+    std::cout << "max: " << map.max << "    min: " << map.min << "\n";
+
+    for (int y = 0; y < map.height; y++)
     {
-        for (int x = 0; x < map.x_size; x++)
+        for (int x = 0; x < map.width; x++)
         {
             std::cout << map.get_pixel(x, y) << " ";
         }
         std::cout << "\n";
     }
-    
+    std::cout << "\nend🤡\n";
 }