5 files changed, 178 insertions, 0 deletions
diff --git a/frontends/calculator/CEdev/examples/gfx_buffered_cube/autotester.json b/frontends/calculator/CEdev/examples/gfx_buffered_cube/autotester.json
new file mode 100644
index 0000000..6d4c32f
--- /dev/null
+++ b/frontends/calculator/CEdev/examples/gfx_buffered_cube/autotester.json
@@ -0,0 +1,40 @@
+{
+  "rom": "84pce_515.rom",
+  "transfer_files": [
+    "bin/DEMO.8xp"
+  ],
+  "target": {
+    "name": "DEMO",
+    "isASM": true
+  },
+  "sequence": [
+    "action|launch",
+    "delay|300",
+    "hash|1",
+    "hash|2",
+    "key|enter",
+    "delay|300",
+    "hashWait|3"
+  ],
+  "hashes": {
+    "1": {
+      "description": "The background will be white (check a part before the cube)",
+      "start": "vram_start",
+      "size": "0x500",
+      "expected_CRCs": [ "5DAA1FBD" ]
+    },
+    "2": {
+      "description": "The background will be white (check a part after the cube)",
+      "start": "0xD52700",
+      "size": "0x500",
+      "expected_CRCs": [ "5DAA1FBD" ]
+    },
+    "3": {
+      "description": "Back to the home screen (exit check)",
+      "start": "vram_start",
+      "size": "vram_16_size",
+      "expected_CRCs": [ "FFAF89BA", "101734A5", "9DA19F44" ]
+    }
+  }
+}
+
diff --git a/frontends/calculator/CEdev/examples/gfx_buffered_cube/makefile b/frontends/calculator/CEdev/examples/gfx_buffered_cube/makefile
new file mode 100644
index 0000000..1f1b36b
--- /dev/null
+++ b/frontends/calculator/CEdev/examples/gfx_buffered_cube/makefile
@@ -0,0 +1,15 @@
+# ----------------------------
+# Set NAME to the program name
+# Set ICON to the png icon file name
+# Set DESCRIPTION to display within a compatible shell
+# Set COMPRESSED to "YES" to create a compressed program
+# ----------------------------
+
+NAME        ?= DEMO
+COMPRESSED  ?= NO
+ICON        ?= iconc.png
+DESCRIPTION ?= "C SDK Demo"
+
+# ----------------------------
+
+include $(CEDEV)/include/.makefile
diff --git a/frontends/calculator/CEdev/examples/gfx_buffered_cube/readme.md b/frontends/calculator/CEdev/examples/gfx_buffered_cube/readme.md
new file mode 100644
index 0000000..413aa36
--- /dev/null
+++ b/frontends/calculator/CEdev/examples/gfx_buffered_cube/readme.md
@@ -0,0 +1,10 @@
+### GraphX Cube Buffer Demo
+
+Draws a rotating cube which demonstartes the line and double buffering routines
+
+![Screenshot](screenshot.gif)
+
+---
+
+This demo is a part of the C SDK Toolchain for use on the CE.
+
diff --git a/frontends/calculator/CEdev/examples/gfx_buffered_cube/screenshot.gif b/frontends/calculator/CEdev/examples/gfx_buffered_cube/screenshot.gif
new file mode 100644
index 0000000..73c97a0
--- /dev/null
+++ b/frontends/calculator/CEdev/examples/gfx_buffered_cube/screenshot.gif
diff --git a/frontends/calculator/CEdev/examples/gfx_buffered_cube/src/main.c b/frontends/calculator/CEdev/examples/gfx_buffered_cube/src/main.c
new file mode 100644
index 0000000..422e96c
--- /dev/null
+++ b/frontends/calculator/CEdev/examples/gfx_buffered_cube/src/main.c
@@ -0,0 +1,113 @@
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <tice.h>
+
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <graphx.h>
+
+/* Function prototypes */
+void rotate(void);
+
+/* Globals */
+#define ORG (-50)
+#define DEG (6.0)
+#define ANG (DEG * M_PI / 180.0)
+
+/* define the verticies for the two rectangles */
+float face1[4][2] = {
+    { 140,  45 },
+    { 240,  45 },
+    { 240, 145 },
+    { 140, 145 },
+};
+
+float face2[4][2] = {
+    { 140 + ORG,  45 - ORG },
+    { 240 + ORG,  45 - ORG },
+    { 240 + ORG, 145 - ORG },
+    { 140 + ORG, 145 - ORG },
+};
+
+/* declare some globals */
+float sin_angle,
+      cos_angle;
+
+float midx1,
+      midy1,
+      midx2,
+      midy2;
+
+/* Place main code in main */
+void main(void) {
+    uint8_t loop = 0;
+
+    /* Seed the random numbers */
+    srand(rtc_Time());
+
+    /* Get some main variables set up */
+    sin_angle = sin(ANG);
+    cos_angle = cos(ANG);
+    midx1 = (face1[0][0] + face1[1][0]) / 2.0;
+    midy1 = (face1[1][1] + face1[2][1]) / 2.0;
+    midx2 = (face2[0][0] + face2[1][0]) / 2.0;
+    midy2 = (face2[1][1] + face2[2][1]) / 2.0;
+
+    /* Start the graphics routines */
+    gfx_Begin();
+    gfx_SetDrawBuffer();
+
+    /* Loop until a key is pressed */
+    while (!os_GetCSC()) {
+
+        /* Change the color of the cube depending on loop (mod 16) */
+        if (!((loop++) & 0xf)) {
+            gfx_SetColor(rand());
+        }
+
+        /* Call the rotation code */
+        rotate();
+
+        /* Swap the buffer with the screen */
+        gfx_SwapDraw();
+    }
+
+    /* End the graphics */
+    gfx_End();
+}
+
+/* Rotation code */
+void rotate(void) {
+    uint8_t i, j;
+    float tmp1, tmp2;
+
+    /* Compute the new vertex coordinates */
+    for (i=0; i<4; i++) {
+        tmp1 = face1[i][0] - midx1;
+        tmp2 = face1[i][1] - midy1;
+
+        face1[i][0] = midx1 + (tmp1 * cos_angle) - (tmp2 * sin_angle);
+        face1[i][1] = midy1 + (tmp1 * sin_angle) + (tmp2 * cos_angle);
+
+        tmp1 = face2[i][0] - midx2;
+        tmp2 = face2[i][1] - midy2;
+
+        face2[i][0] = midx2 + (tmp1 * cos_angle) - (tmp2 * sin_angle);
+        face2[i][1] = midy2 + (tmp1 * sin_angle) + (tmp2 * cos_angle);
+    }
+
+    /* Clear the drawing buffer */
+    gfx_FillScreen(gfx_white);
+
+    /* Draw the cube */
+    for (i=0; i<4; i++) {
+        j = i + 1 & 3;
+        gfx_Line(face1[i][0], face1[i][1], face1[j][0], face1[j][1]);
+        gfx_Line(face2[i][0], face2[i][1], face2[j][0], face2[j][1]);
+        gfx_Line(face1[i][0], face1[i][1], face2[i][0], face2[i][1]);
+    }
+}