Moved code into src

src/HeightMap.cpp

@@ -0,0 +1,39 @@
+#include <gdal/gdal.h>
+#include "gdal/gdal_priv.h"
+#include <iostream>
+
+#include <stdfloat>
+
+#include "HeightMap.hh"
+
+HeightMap::HeightMap(const char* filepath) 
+{
+    // Open the file with some gdal nonsense:
+    const GDALAccess eAccess = GA_ReadOnly;
+    GDALDatasetUniquePtr file;
+    GDALAllRegister();
+    file = GDALDatasetUniquePtr(GDALDataset::FromHandle(GDALOpen( filepath, eAccess )));
+    if( !file )
+    {
+        std::cout << "Could not open tiff file!"; // handle error
+    }
+    
+    // The heigthmap only has one band
+    auto band = file->GetBands()[0];
+    // write the attrributes
+    this->x_size = band->GetXSize();
+    this->y_size = band->GetYSize();
+    
+    this->data = (float *) CPLMalloc(sizeof(float)*x_size*y_size);
+    band->RasterIO( GF_Read, 0, 0, x_size, y_size,
+                    this->data, x_size, y_size, GDT_Float32,
+                    0, 0 );
+    
+    band->FlushCache();
+}
+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);
+    return *(this->data + offset);
+}

src/HeightMap.hh

@@ -0,0 +1,19 @@
+#include <gdal/gdal.h>
+#include "gdal/gdal_priv.h"
+#include <iostream>
+
+#include <stdfloat>
+
+/**
+    @brief stores the contents of a tif file with float32 values
+ */
+class HeightMap
+{
+    public:
+        float* data;
+        int x_size; //!< x dimension in pixels
+        int y_size; //!< y dimension in pixels
+
+        HeightMap(const char* filepath);
+        float get_pixel(int x,int y);
+};

src/main.cpp

@@ -0,0 +1,17 @@
+#include "HeightMap.hh"
+
+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++)
+    {
+        for (int x = 0; x < map.x_size; x++)
+        {
+            std::cout << map.get_pixel(x, y) << " ";
+        }
+        std::cout << "\n";
+    }
+    
+}