diff options
| author | Frederick Yin <fkfd@fkfd.me> | 2022-08-16 11:54:23 +0800 |
|---|---|---|
| committer | Frederick Yin <fkfd@fkfd.me> | 2022-08-16 11:54:23 +0800 |
| commit | 9542deeb483a00b6fabed7574720926ce97d7511 (patch) | |
| tree | 0f2c1f72c03dd4693fd59df67544d2a4dddc5494 /projects/12/Screen.jack | |
| parent | 9c0cb1d1c32724fc95ac9548e4f8d873d3adaccc (diff) | |
Projects, 01-06 completed
Diffstat (limited to 'projects/12/Screen.jack')
| -rw-r--r-- | projects/12/Screen.jack | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/projects/12/Screen.jack b/projects/12/Screen.jack new file mode 100644 index 0000000..6563042 --- /dev/null +++ b/projects/12/Screen.jack @@ -0,0 +1,43 @@ +// This file is part of www.nand2tetris.org
+// and the book "The Elements of Computing Systems"
+// by Nisan and Schocken, MIT Press.
+// File name: projects/12/Screen.jack
+
+/**
+ * A library of functions for displaying graphics on the screen.
+ * The Hack physical screen consists of 256 rows (indexed 0..255, top to bottom)
+ * of 512 pixels each (indexed 0..511, left to right). The top left pixel on
+ * the screen is indexed (0,0).
+ */
+class Screen {
+
+ /** Initializes the Screen. */
+ function void init() {
+ }
+
+ /** Erases the entire screen. */
+ function void clearScreen() {
+ }
+
+ /** Sets the current color, to be used for all subsequent drawXXX commands.
+ * Black is represented by true, white by false. */
+ function void setColor(boolean b) {
+ }
+
+ /** Draws the (x,y) pixel, using the current color. */
+ function void drawPixel(int x, int y) {
+ }
+
+ /** Draws a line from pixel (x1,y1) to pixel (x2,y2), using the current color. */
+ function void drawLine(int x1, int y1, int x2, int y2) {
+ }
+
+ /** Draws a filled rectangle whose top left corner is (x1, y1)
+ * and bottom right corner is (x2,y2), using the current color. */
+ function void drawRectangle(int x1, int y1, int x2, int y2) {
+ }
+
+ /** Draws a filled circle of radius r<=181 around (x,y), using the current color. */
+ function void drawCircle(int x, int y, int r) {
+ }
+}
|