From b59995f9732720e8c82e22f44c0c8cb3efe2c708 Mon Sep 17 00:00:00 2001
From: admin <admin@optics-design.com>
Date: Mon, 4 Aug 2025 18:10:36 +0200
Subject: changes to label visibility

---
 include/glamac_render.h | 33 +++++++++++++++++++++++++++++----
 include/glamac_view.h   | 10 ++++++++++
 include/glass_data.h    |  7 +++++++
 3 files changed, 46 insertions(+), 4 deletions(-)

(limited to 'include')

diff --git a/include/glamac_render.h b/include/glamac_render.h
index 546bafe..a07e055 100644
--- a/include/glamac_render.h
+++ b/include/glamac_render.h
@@ -21,7 +21,7 @@ void draw_glass_properties(SDL_Renderer *renderer, TTF_Font *font, TTF_Font *tit
 void draw_help_window(SDL_Renderer *renderer, TTF_Font *font, TTF_Font *titleFont, const ViewState* view);
 
 // Main render function
-void render(SDL_Renderer *renderer, TTF_Font *font, TTF_Font *titleFont, TTF_Font *labelFont, const ViewState* view, GlassCluster* clusters, i32 clusterCount);
+void render(SDL_Renderer *renderer, TTF_Font *font, TTF_Font *titleFont, TTF_Font *labelFont, ViewState* view, GlassCluster* clusters, i32 clusterCount);
 
 // Font management
 typedef struct {
@@ -40,8 +40,33 @@ b32 load_adaptive_fonts(FontSet *fonts, i32 windowWidth, i32 windowHeight, f32 d
 void free_fonts(FontSet *fonts);
 void clear_text_cache(void);
 
-// Static label positioning
-void calculate_static_label_positions(GlassCluster* clusters, i32 clusterCount, const ViewState* view);
-void cleanup_static_label_positions(void);
+// Simple collision detection structures
+typedef struct {
+    i32 x, y;         // Screen position
+    i32 width, height; // Label dimensions
+} LabelRect;
+
+// Pre-calculated label positions (updated only on catalog changes)
+typedef struct {
+    i32 glassIndex;    // Which glass this label belongs to
+    i32 screenX, screenY; // Fixed screen position
+    b32 visible;       // Whether to show this label
+    char text[64];     // Label text
+} PreCalculatedLabel;
+
+// Global label positioning system
+void recalculate_label_positions(const ViewState* view, GlassCluster* clusters, i32 clusterCount);
+void draw_precalculated_labels(SDL_Renderer *renderer, TTF_Font *labelFont, const ViewState* view);
+b32 needs_label_recalculation(ViewState* view);
+
+// Collision detection functions for debug mode
+b32 rects_overlap(const LabelRect* a, const LabelRect* b);
+b32 label_collides_with_point(const LabelRect* label, i32 pointX, i32 pointY, i32 pointRadius);
+
+// Advanced label visibility functions for testing
+void calculate_smart_window_position(i32 glassX, i32 glassY, i32 windowWidth, i32 windowHeight, 
+                                    const ViewState* view, i32* windowX, i32* windowY);
+f32 calculate_label_priority(i32 glassIndex, const ViewState* view, GlassCluster* clusters, i32 clusterCount);
+b32 should_show_label_advanced(i32 glassIndex, const ViewState* view, GlassCluster* clusters, i32 clusterCount);
 
 #endif /* GLAMAC_RENDER_H */
diff --git a/include/glamac_view.h b/include/glamac_view.h
index 21f273f..9eec63a 100644
--- a/include/glamac_view.h
+++ b/include/glamac_view.h
@@ -45,11 +45,21 @@ typedef struct {
     u32 gKeyTime;           // Time when 'g' was pressed for sequence timing
     i32 selectedGlass;      // Index of selected glass (-1 if none)
     i32 selectedCluster;    // Index of selected cluster (-1 if none)
+    
+    // Label recalculation tracking
+    f32 lastZoomLevel;      // Last zoom level for which labels were calculated
+    i32 lastWindowWidth;    // Last window width for labels
+    i32 lastWindowHeight;   // Last window height for labels
+    f32 lastOffsetX;        // Last X offset for labels
+    f32 lastOffsetY;        // Last Y offset for labels
 } ViewState;
 
 // Initialize a view state with default values
 void init_view_state(ViewState* view, i32 windowWidth, i32 windowHeight);
 
+// Refresh view state data range when catalog changes
+void refresh_view_data_range(ViewState* view);
+
 // Helper function to calculate adaptive padding
 static inline i32 get_adaptive_padding(const ViewState* view) {
     i32 padding = (i32)(view->windowWidth * MAX_PADDING_PERCENT);
diff --git a/include/glass_data.h b/include/glass_data.h
index 75aedde..56c2c7f 100644
--- a/include/glass_data.h
+++ b/include/glass_data.h
@@ -46,4 +46,11 @@ b32 load_glasses_from_json(const byte* json_path, const byte* manufacturer_filte
 // Cleanup glass data resources
 void cleanup_glass_data(void);
 
+// Catalog management
+u32 get_catalog_count(void);
+const char* get_catalog_name(u32 catalog_index);
+const char* get_current_catalog_name(void);
+void set_current_catalog(u32 catalog_index);
+void cycle_catalog(i32 direction); // +1 for next, -1 for previous
+
 #endif /* GLASS_DATA_H */
-- 
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