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mach: math lib adding functionalities for setting 2d/3d matrix

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RokKos 2023-06-28 16:04:00 +02:00 • committed by Stephen Gutekanst
parent 5f41195b68
commit becfd948e8
1 changed files with 19 additions and 0 deletions
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src/math.zig
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@ -401,6 +401,25 @@ pub const mat = struct {
} else @compileError("Expected matrix, found '" ++ @typeName(T) ++ "'"); } else @compileError("Expected matrix, found '" ++ @typeName(T) ++ "'");
} }
pub inline fn set_2d_matrix(data: []f32) Mat3x3 {
std.debug.assert(data.len == 9);
return .{
data[0], data[1], data[2], 0,
data[3], data[4], data[5], 0,
data[6], data[7], data[8], 0,
};
}
pub inline fn set_3d_matrix(data: []const f32) Mat4x4 {
std.debug.assert(data.len == 16);
return .{
data[0], data[1], data[2], data[3],
data[4], data[5], data[6], data[7],
data[8], data[9], data[10], data[11],
data[12], data[13], data[14], data[15],
};
}
/// Constructs an orthographic projection matrix; an orthogonal transformation matrix which /// Constructs an orthographic projection matrix; an orthogonal transformation matrix which
/// transforms from the given left, right, bottom, and top dimensions into -1 +1 in x and y, /// transforms from the given left, right, bottom, and top dimensions into -1 +1 in x and y,
/// and 0 to +1 in z. /// and 0 to +1 in z.