Use uint8_t instead of int in CaseMap

CMakeLists.txt

@@ -6,7 +6,7 @@ cmake_minimum_required(VERSION 3.0)
 find_package(GDAL CONFIG REQUIRED)
 
 add_executable(${PROJECT_NAME}
-	src/HeightMap.cpp src/main.cpp
+	src/HeightMap.cpp src/CaseMap.cpp src/main.cpp
 )
 
 

src/CaseMap.cpp

@@ -0,0 +1,16 @@
+#include <cstdint>
+#include "CaseMap.hh"
+
+CaseMap::CaseMap(int width, int height, uint8_t* cases)
+{
+    this->width = width;
+    this->height = height;
+    this->cases = cases;
+
+}
+int CaseMap::get_case(int x, int y)
+{
+    // all the cases are in an array of ints from left to right, top to bottom
+    int offset = ((this->width * y) + x);
+    return *(this->cases + offset);
+}

src/CaseMap.hh

@@ -0,0 +1,14 @@
+/**
+    @brief stores the cases from marching squars for one elevation level
+ */
+#include <cstdint>
+class CaseMap
+{
+    public:
+        uint8_t* cases; //!< pointer to the first case in the array. uint8_t is a 8 bit unsigned integer 
+        int width; //!< width of image in cases
+        int height; //!< height of image in cases
+
+        CaseMap(int width, int height, uint8_t* cases);
+        int get_case(int x,int y);
+};

src/casemap.cpp

@@ -1,22 +0,0 @@
-#include <gdal/gdal.h>
-#include "gdal/gdal_priv.h"
-#include <iostream>
-
-#include <stdfloat>
-
-#include "CaseMap.hh"
-#include "HeightMap.hh"
-
-CaseMap::CaseMap(int width, int height, int* cases)
-{
-    this->width = width;
-    this->height = height;
-    this->cases = cases;
-
-}
-int CaseMap::get_case(int x, int y)
-{
-    // all the pixels are in an array of floats from left to right, top to bottom
-    int offset = ((this->width * y) + x);
-    return *(this->cases + offset);
-}

src/casemap.hh

@@ -1,13 +0,0 @@
-/**
-    @brief stores the cases produced from image
- */
-class CaseMap
-{
-    public:
-        float* data;
-        int width; //!< width of image in cases
-        int height; //!< height of image in cases
-
-        CaseMap(int width, int height, int* cases);
-        float get_case(int x,int y);
-};

src/main.cpp

@@ -3,19 +3,29 @@
 #include <iostream>
 #include <ostream>
 #include <vector>
+#include <cstdint>
 #include <gdal/gdal.h>
+#include "gdal/gdal_priv.h"
+#include <gdal/gdal_frmts.h>
 
-std::vector<CaseMap> produce_casemap(HeightMap* heightmap)
+CaseMap produce_casemap(HeightMap* heightmap, float z)
 {
-    std::vector<CaseMap> output;
-    int* test = (int *) CPLMalloc(sizeof(int)*heightmap->width*heightmap->height);
-    CaseMap casemap1(heightmap->width-1, heightmap->height-1, test);
-    output.push_back(casemap1);
-    return output
-}
-//(int a, int b, )
+    uint8_t *cases = (uint8_t *) CPLMalloc(sizeof(uint8_t)*(heightmap->width-1)*(heightmap->height-1));
+    for (int i = 0; i<(heightmap->width-1)*(heightmap->height-1); i++) {
+        int y = i/(heightmap->width-1);
+        int x = i%(heightmap->width-1);
+        uint8_t result = (heightmap->get_pixel(x,y+1)>z) + 
+        (heightmap->get_pixel(x+1,y+1)>z)*2 +
+        (heightmap->get_pixel(x+1,y)>z)*4 +
+        (heightmap->get_pixel(x,y)>z)*8;
+        *(cases + i) = result;
+    }
+    
+    return CaseMap(heightmap->width-1, heightmap->height-1, cases);
 
 
+}
+
 int main(int argc, const char* argv[])
 {
     const char* filepath = argv[1];
@@ -23,16 +33,17 @@ int main(int argc, const char* argv[])
     
     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++)
+    
+    auto casemap = produce_casemap(&map, 40.0);
+    
+    for (int y = 0; y < casemap.height; y++)
     {
-        for (int x = 0; x < map.width; x++)
+        for (int x = 0; x < casemap.width; x++)
         {
-            std::cout << map.get_pixel(x, y) << " ";
+            if (casemap.get_case(x, y) && casemap.get_case(x, y)!=15) {
+                std::cout << x << ","<< y << "=" << casemap.get_case(x, y) << " ";
+            }
         }
-        std::cout << "\n";
+       //std::cout << "\n";
     }
-    std::cout << "\nend🤡\n";
-    casemap = produce_casemap(map);
-    std::cout << casemap.get_case( 2, 2)
 }