Draw a rotating cube: Difference between revisions
Add Zig solution
(restored {{header|Mathematica}}, accidentally deleted in previous edit (oops)) |
Recombinant (talk | contribs) (Add Zig solution) |
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T = T + 0.15
loop</syntaxhighlight>
=={{header|Zig}}==
{{works with|Zig|0.11.0dev}} {{works with|Raylib|4.6dev}}
<syntaxhighlight lang="zig">const std = @import("std");
const c = @cImport({
@cInclude("raylib.h");
@cInclude("rlgl.h");
});
const dark_mode = true;
const show_grid = false;
pub fn main() !void {
const screen_width = 640;
const screen_height = 360;
const cube_side = 1;
const size = c.Vector3{ .x = cube_side, .y = cube_side, .z = cube_side };
const position = c.Vector3{ .x = 0, .y = 0, .z = 0 };
const x_rot = 45;
const y_center = std.math.sqrt(@as(f32, 3)) * cube_side / 2;
const z_rot = std.math.atan(@as(f32, std.math.sqrt1_2)) * 180 / std.math.pi;
c.SetConfigFlags(c.FLAG_WINDOW_RESIZABLE | c.FLAG_VSYNC_HINT);
c.InitWindow(screen_width, screen_height, "Draw a Rotating Cube");
defer c.CloseWindow();
var camera = c.Camera{
.position = .{ .x = 3, .y = 3, .z = 3 },
.target = .{ .x = 0, .y = y_center, .z = 0 }, // Center of cube
.up = .{ .x = 0, .y = 1, .z = 0 },
.fovy = 45, // Camera field-of-view Y
.projection = c.CAMERA_PERSPECTIVE,
};
c.SetTargetFPS(60);
while (!c.WindowShouldClose()) // Detect window close button or ESC key
{
c.UpdateCamera(&camera, c.CAMERA_ORBITAL);
c.BeginDrawing();
defer c.EndDrawing();
c.ClearBackground(if (dark_mode) c.BLACK else c.RAYWHITE);
{
c.BeginMode3D(camera);
defer c.EndMode3D();
{
c.rlPushMatrix();
defer c.rlPopMatrix();
c.rlTranslatef(0, y_center, 0);
c.rlRotatef(z_rot, 0, 0, 1);
c.rlRotatef(x_rot, 1, 0, 0);
c.DrawCubeWiresV(position, size, if (dark_mode) c.LIME else c.BLACK);
}
if (show_grid) c.DrawGrid(12, 0.75);
}
}
}</syntaxhighlight>
[[Category:Geometry]]
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