Adom Desktop - Fusion 360 Bridge

// ULP script to detect board layers
// Usage: run detect_layers.ulp output_file_path

if (argc < 1) {
    dlgMessageBox("Please provide an output file path!\nUsage: run detect_layers.ulp <output_file>");
    exit(1);
}

string output_file = argv[1];

if (board) {
    board(B) {
        int copper_layer_count = 0;
        string layer_info = "";
        
        // Simple approach: check for traces/wires on each layer
        int layer_has_traces[];
        
        // Check for traces on each layer
        B.signals(S) {
            S.wires(W) {
                layer_has_traces[W.layer] = 1;
            }
        }
        
        // Check all layers and determine which are copper layers
        B.layers(L) {
            int is_copper = 0;
            
            // More robust layer detection based on Eagle's standard layer numbering:
            // Layer 1: Top copper (always present)
            // Layer 16: Bottom copper (always present) 
            // Layers 2-15: Inner copper layers (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
            // Standard 4-layer uses: 1 (top), 2 (inner1), 15 (inner2), 16 (bottom)
            // Standard 6-layer uses: 1, 2, 3, 14, 15, 16
            // Standard 8-layer uses: 1, 2, 3, 4, 13, 14, 15, 16
            
            if (L.number == 1 || L.number == 16) {
                // Top and bottom layers - always copper if they exist
                is_copper = 1;
                copper_layer_count++;
            } else if (L.number >= 2 && L.number <= 15) {
                // Potential inner copper layers - only count if they have traces
                if (layer_has_traces[L.number]) {
                    is_copper = 1;
                    copper_layer_count++;
                }
            }
            
            // Add layer info to JSON
            if (layer_info != "") {
                layer_info += ",";
            }
            
            string layer_num, is_copper_str, has_traces_str;
            sprintf(layer_num, "%d", L.number);
            sprintf(is_copper_str, "%d", is_copper);
            sprintf(has_traces_str, "%d", layer_has_traces[L.number]);
            
            layer_info += "{\"number\":" + layer_num + ",\"name\":\"" + L.name + "\",\"isCopper\":" + is_copper_str + ",\"hasTraces\":" + has_traces_str + "}";
        }
        
        // Write results to file
        output(output_file) {
            printf("{\n");
            printf("  \"copperLayerCount\": %d,\n", copper_layer_count);
            printf("  \"boardName\": \"%s\",\n", B.name);
            printf("  \"layers\": [%s]\n", layer_info);
            printf("}\n");
        }
    }
} else {
    // No board found - write error info
    output(output_file) {
        printf("{\n");
        printf("  \"error\": \"No board found\",\n");
        printf("  \"copperLayerCount\": 0,\n");
        printf("  \"layers\": []\n");
        printf("}\n");
    }
}