+int pad_blocks = 3;
+
+real block_width = center_width / pad_blocks;
+real block_height = center_height / pad_blocks;
+
+real block_x(int x) = (x - (pad_blocks - 1)/2) * block_width;
+real block_y(int y) = (y - (pad_blocks - 1)/2) * block_height;
+
+bool via_block(int x, int y) {
+ return (x & 1) == 0 && (y & 1) == 0;
+}
+
+real via_hole = 15/1000 * 25.4; /* 15 mil drill */
+real via_copper = 3.5/1000 * 25.4; /* 7 mil anulus */
+
+for (int pad_y = 0; pad_y < pad_blocks; pad_y++) {
+ for (int pad_x = 0; pad_x < pad_blocks; pad_x++)
+ if (via_block(pad_x, pad_y)) {
+ pin_mm_clear_mask(block_x(pad_x), block_y(pad_y),
+ via_hole, via_copper * 2, pad_clearance, 0,
+ "GND", "GND");
+ pad_mm_clear_mask_options(block_x(pad_x), block_y(pad_y),
+ block_width, block_height,
+ pad_clearance, 0,
+ "GND", "GND","nopaste");
+ } else {
+ /* full square of metal */
+ pad_mm_clear_options(block_x(pad_x), block_y(pad_y),
+ block_width, block_height,
+ 0,
+ "GND", "GND","nopaste");
+ /* 1/4 full of solder paste */
+ pad_mm_clear_options(block_x(pad_x), block_y(pad_y),
+ block_width/2, block_height/2,
+ 0,
+ "GND", "GND","");
+ }
+}