Add geometry handling.

src/image/CMakeLists.txt

@@ -16,6 +16,6 @@ target_include_directories(image PUBLIC
 set_target_properties( image PROPERTIES WINDOWS_EXPORT_ALL_SYMBOLS ON )   
 
 find_package(PNG REQUIRED)                       
-target_link_libraries( image PUBLIC PNG::PNG)
+target_link_libraries( image PUBLIC PNG::PNG core)
 
 set_property(TARGET image PROPERTY FOLDER src)

src/image/Image.cpp

@@ -7,6 +7,23 @@ Image::Image(unsigned width, unsigned height)
 
 }
 
+void Image::Initialize()
+{
+    mData = std::vector<unsigned char>(GetBytesPerRow()*mHeight, 0);
+}
+
+void Image::SetPixelValue(unsigned idx, unsigned jdx, const Color& color)
+{
+    if (mData.empty())
+    {
+        Initialize();
+    }
+
+    mData[jdx*GetBytesPerRow() + idx*3] = static_cast<unsigned char>(color.GetR());
+    mData[jdx*GetBytesPerRow() + idx*3 + 1] = static_cast<unsigned char>(color.GetG());
+    mData[jdx*GetBytesPerRow() + idx*3 + 2] = static_cast<unsigned char>(color.GetB());
+}
+
 std::unique_ptr<Image> Image::Create(unsigned width, unsigned height)
 {
     return std::make_unique<Image>(width, height);

src/image/Image.h

@@ -1,5 +1,7 @@
 #pragma once
 
+#include "Color.h"
+
 #include <memory>
 #include <vector>
 
@@ -16,6 +18,9 @@ public:
     unsigned GetHeight() const;
     unsigned GetBitDepth() const;
     unsigned GetNumChannels() const;
+
+    void SetPixelValue(unsigned idx, unsigned jdx, const Color& color);
+
     unsigned char GetByte(unsigned idx, unsigned jdx) const;
 
     void SetData(const std::vector<unsigned char>& data);
@@ -25,6 +30,8 @@ public:
     void SetNumChannels(unsigned numChannels);
 
 private:
+    void Initialize();
+
     unsigned mWidth{1};
     unsigned mHeight{1};
     unsigned mBitDepth{8};