1 files changed, 38 insertions, 0 deletions
diff --git a/game/addons/zylann.hterrain/native/src/image_utils.h b/game/addons/zylann.hterrain/native/src/image_utils.h
new file mode 100644
index 0000000..5cbe399
--- /dev/null
+++ b/game/addons/zylann.hterrain/native/src/image_utils.h
@@ -0,0 +1,38 @@
+#ifndef IMAGE_UTILS_H
+#define IMAGE_UTILS_H
+
+#include <core/Godot.hpp>
+#include <gen/Image.hpp>
+#include <gen/Reference.hpp>
+#include <vector>
+
+namespace godot {
+
+class ImageUtils : public Reference {
+    GODOT_CLASS(ImageUtils, Reference)
+public:
+    static void _register_methods();
+
+    ImageUtils();
+    ~ImageUtils();
+
+    void _init();
+
+    Vector2 get_red_range(Ref<Image> image_ref, Rect2 rect) const;
+    float get_red_sum(Ref<Image> image_ref, Rect2 rect) const;
+    float get_red_sum_weighted(Ref<Image> image_ref, Ref<Image> brush_ref, Vector2 p_pos, float factor) const;
+    void add_red_brush(Ref<Image> image_ref, Ref<Image> brush_ref, Vector2 p_pos, float factor) const;
+    void lerp_channel_brush(Ref<Image> image_ref, Ref<Image> brush_ref, Vector2 p_pos, float factor, float target_value, int channel) const;
+    void lerp_color_brush(Ref<Image> image_ref, Ref<Image> brush_ref, Vector2 p_pos, float factor, Color target_value) const;
+    float generate_gaussian_brush(Ref<Image> image_ref) const;
+    void blur_red_brush(Ref<Image> image_ref, Ref<Image> brush_ref, Vector2 p_pos, float factor);
+    void paint_indexed_splat(Ref<Image> index_map_ref, Ref<Image> weight_map_ref, Ref<Image> brush_ref, Vector2 p_pos, int texture_index, float factor);
+    //void erode_red_brush(Ref<Image> image_ref, Ref<Image> brush_ref, Vector2 p_pos, float factor);
+
+private:
+    std::vector<float> _blur_buffer;
+};
+
+} // namespace godot
+
+#endif // IMAGE_UTILS_H