add ImageData.drawLine

src/graphics/core/ImageData.hpp

@@ -2,6 +2,7 @@
 
 #include "typedefs.hpp"
 
+#include <glm/vec4.hpp>
 #include <memory>
 
 enum class ImageFormat {
@@ -23,6 +24,7 @@ public:
     void flipX();
     void flipY();
 
+    void drawLine(int x1, int y1, int x2, int y2, const glm::ivec4& color);
     void blitRGB_on_RGBA(const ImageData* image, int x, int y);
     void blitMatchingFormat(const ImageData* image, int x, int y);
     void blit(const ImageData* image, int x, int y);
@@ -44,6 +46,11 @@ public:
     uint getHeight() const {
         return height;
     }
+
+    size_t getDataSize() const {
+        size_t channels = 3 + (format == ImageFormat::rgba8888);
+        return width * height * channels;
+    }
 };
 
 std::unique_ptr<ImageData> add_atlas_margins(ImageData* image, int grid_size);