71 lines
1.8 KiB
Zig
71 lines
1.8 KiB
Zig
const _c = @import("c");
|
|
const intToError = @import("error.zig").intToError;
|
|
const Error = @import("error.zig").Error;
|
|
|
|
const Vector = @import("image.zig").Vector;
|
|
const Matrix = @import("types.zig").Matrix;
|
|
|
|
pub const angel_pi = _c.FT_ANGLE_PI;
|
|
pub const angel_2pi = _c.FT_ANGLE_2PI;
|
|
pub const angel_pi2 = _c.FT_ANGLE_PI2;
|
|
pub const angel_pi4 = _c.FT_ANGLE_PI4;
|
|
|
|
pub fn mulDiv(a: i32, b: i32, c: i32) i32 {
|
|
return @intCast(i32, _c.FT_MulDiv(a, b, c));
|
|
}
|
|
|
|
pub fn mulFix(a: i32, b: i32) i32 {
|
|
return @intCast(i32, _c.FT_MulFix(a, b));
|
|
}
|
|
|
|
pub fn divFix(a: i32, b: i32) i32 {
|
|
return @intCast(i32, _c.FT_DivFix(a, b));
|
|
}
|
|
|
|
pub fn roundFix(a: i32) i32 {
|
|
return @intCast(i32, _c.FT_RoundFix(a));
|
|
}
|
|
|
|
pub fn ceilFix(a: i32) i32 {
|
|
return @intCast(i32, _c.FT_CeilFix(a));
|
|
}
|
|
|
|
pub fn floorFix(a: i32) i32 {
|
|
return @intCast(i32, _c.FT_FloorFix(a));
|
|
}
|
|
|
|
pub fn vectorTransform(vec: *Vector, matrix: Matrix) void {
|
|
_c.FT_Vector_Transform(vec, &matrix);
|
|
}
|
|
|
|
pub fn matrixMul(a: Matrix, b: *Matrix) void {
|
|
_c.FT_Matrix_Multiply(&a, b);
|
|
}
|
|
|
|
pub fn matrixInvert(m: *Matrix) Error!void {
|
|
try intToError(_c.FT_Matrix_Invert(m));
|
|
}
|
|
|
|
pub fn angleDiff(a: i32, b: i32) i32 {
|
|
return @intCast(i32, _c.FT_Angle_Diff(a, b));
|
|
}
|
|
|
|
pub fn vectorUnit(vec: *Vector, angle: i32) void {
|
|
_c.FT_Vector_Unit(vec, angle);
|
|
}
|
|
|
|
pub fn vectorRotate(vec: *Vector, angle: i32) void {
|
|
_c.FT_Vector_Rotate(vec, angle);
|
|
}
|
|
|
|
pub fn vectorLength(vec: *Vector) i32 {
|
|
return @intCast(i32, _c.FT_Vector_Length(vec));
|
|
}
|
|
|
|
pub fn vectorPolarize(vec: *Vector, length: *i32, angle: *i32) void {
|
|
_c.FT_Vector_Polarize(vec, &@intCast(c_long, length.*), &@intCast(c_long, angle.*));
|
|
}
|
|
|
|
pub fn vectorFromPolar(vec: *Vector, length: i32, angle: i32) void {
|
|
_c.FT_Vector_From_Polar(vec, length, angle);
|
|
}
|