Rust: Color pub u8

bench/programs_rust/rot-cube/src/main.rs

@@ -0,0 +1,100 @@
+#![no_std]
+#![no_main]
+
+use core::{
+    arch::asm,
+    ops::{Add, Mul, Sub},
+};
+
+use fpga_lib::{
+    interface::{Buttons, Leds},
+    panic_handler,
+    register::X31,
+    vga::{BLACK, BLUE, Color, FONT_WIDTH, GREEN, HEIGHT, RED, VGA, WHITE, WIDTH},
+};
+
+panic_handler! {}
+
+pub struct Vec3(f32, f32, f32);
+pub struct Mat3x3([[f32; 3]; 3]);
+
+impl Mul<Mat3x3> for Mat3x3
+{
+    type Output = Mat3x3;
+
+    fn mul(self, rhs: Mat3x3) -> Self::Output
+    {
+        Mat3x3([
+            [
+                rhs.0[0][0] * self.0[0][0],
+                rhs.0[0][1] * self.0[1][0],
+                rhs.0[0][2] * self.0[2][0],
+            ],
+            [
+                rhs.0[1][0] * self.0[0][1],
+                rhs.0[1][1] * self.0[1][1],
+                rhs.0[1][2] * self.0[2][1],
+            ],
+            [
+                rhs.0[2][0] * self.0[0][2],
+                rhs.0[2][1] * self.0[1][2],
+                rhs.0[2][2] * self.0[2][2],
+            ],
+        ])
+    }
+}
+
+impl Mul<Vec3> for Mat3x3
+{
+    type Output = Vec3;
+
+    fn mul(self, rhs: Vec3) -> Self::Output
+    {
+        Vec3(
+            self.0[0][0] * rhs.0 + self.0[0][1] * rhs.1 + self.0[0][2] * rhs.2,
+            self.0[1][0] * rhs.0 + self.0[1][1] * rhs.1 + self.0[1][2] * rhs.2,
+            self.0[2][0] * rhs.0 + self.0[2][1] * rhs.1 + self.0[2][2] * rhs.2,
+        )
+    }
+}
+
+const CUBE: [Vec3; 8] = [
+    Vec3(1., 1., 1.),
+    Vec3(1., 1., -1.),
+    Vec3(1., -1., -1.),
+    Vec3(1., -1., 1.),
+    Vec3(-1., 1., 1.),
+    Vec3(-1., 1., -1.),
+    Vec3(-1., -1., -1.),
+    Vec3(-1., -1., 1.),
+];
+
+#[rustfmt::skip]
+const LINES: [usize; 24] = [
+    // Face 1
+    0, 1,
+    1, 2,
+    2, 3,
+    3, 0,
+
+    // Face 2
+    4, 5,
+    5, 6,
+    6, 7,
+    7, 4,
+
+    // Cross faces
+    0, 4,
+    1, 5,
+    2, 6,
+    3, 7
+];
+
+#[unsafe(no_mangle)]
+pub extern "C" fn main() -> !
+{
+    loop
+    {
+        core::hint::spin_loop();
+    }
+}