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truetype
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type1
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types
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README
T
GradientLineSample
T
GradientStopSample
T
PaintTransform
T
RenderMode
V
attach_metrics
V
from_bytes
V
get_char_index
V
get_char_variant_index
V
get_char_variant_is_default
V
get_chars_of_variant
V
get_foreground_color
V
get_kerning
V
get_palette
V
get_palette_data
V
get_sdf_spread
V
get_variant_selectors
V
get_variants_of_char
V
load_glyph
V
render_glyph
V
select_palette
V
set_foreground_color
V
set_pixel_sizes
V
set_sdf_spread
V
set_var_design_coordinates

README

bikallem/freetype/fixed does not have a README file

#
F26Dot6

type F26Dot6 derive(Compare, Eq, Show)

26.6 fixed-point number (used for pixel coordinates).

impl Add for F26Dot6

impl Neg for F26Dot6

impl Sub for F26Dot6

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F26Dot6::ceil

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fn F26Dot6::ceil(self : F26Dot6) -> F26Dot6

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F26Dot6::floor

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fn F26Dot6::floor(self : F26Dot6) -> F26Dot6

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F26Dot6::from_int

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fn F26Dot6::from_int(v : Int) -> F26Dot6

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F26Dot6::from_pixels

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fn F26Dot6::from_pixels(pixels : Int) -> F26Dot6

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F26Dot6::from_raw

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fn F26Dot6::from_raw(v : Int64) -> F26Dot6

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F26Dot6::round

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fn F26Dot6::round(self : F26Dot6) -> F26Dot6

Round to nearest integer (26.6 → integer).

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F26Dot6::to_int

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fn F26Dot6::to_int(self : F26Dot6) -> Int

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F26Dot6::to_raw

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fn F26Dot6::to_raw(self : F26Dot6) -> Int64

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F26Dot6::val

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fn F26Dot6::val(self : F26Dot6) -> Int64

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F26Dot6::zero

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fn F26Dot6::zero() -> F26Dot6

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F2Dot14

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type F2Dot14 derive(Compare, Eq, Show)

2.14 fixed-point number (used for unit vectors).

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F2Dot14::from_raw

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fn F2Dot14::from_raw(v : Int) -> F2Dot14

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F2Dot14::one

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fn F2Dot14::one() -> F2Dot14

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F2Dot14::to_fixed

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fn F2Dot14::to_fixed(self : F2Dot14) -> Fixed

Convert F2Dot14 to Fixed (16.16). Simply left-shift by 2.

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F2Dot14::to_raw

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fn F2Dot14::to_raw(self : F2Dot14) -> Int

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F2Dot14::val

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fn F2Dot14::val(self : F2Dot14) -> Int

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F2Dot14::zero

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fn F2Dot14::zero() -> F2Dot14

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Fixed

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pub struct Fixed {
  val : Int64
} derive(Compare, Eq, Show)

16.16 fixed-point number. Wraps Int64 to avoid overflow in intermediate computations (C FreeType relies on two's-complement wrapping of 32-bit signed long; we use 64-bit and mask/truncate where needed).

impl Add for Fixed

impl Neg for Fixed

impl Sub for Fixed

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Fixed::ceil

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fn Fixed::ceil(self : Fixed) -> Fixed

Ceil (round up toward +∞).

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Fixed::floor

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fn Fixed::floor(self : Fixed) -> Fixed

Floor (round down toward −∞).

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Fixed::from_int

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fn Fixed::from_int(v : Int) -> Fixed

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Fixed::from_raw

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fn Fixed::from_raw(v : Int64) -> Fixed

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Fixed::one

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fn Fixed::one() -> Fixed

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Fixed::round

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fn Fixed::round(self : Fixed) -> Fixed

Round to nearest integer (16.16 → integer).

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Fixed::to_int

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fn Fixed::to_int(self : Fixed) -> Int

Extract integer part (truncate toward zero).

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Fixed::to_raw

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fn Fixed::to_raw(self : Fixed) -> Int64

Extract raw 16.16 value.

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Fixed::val

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fn Fixed::val(self : Fixed) -> Int64

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Fixed::zero

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fn Fixed::zero() -> Fixed

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Matrix

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type Matrix derive(Eq, Show)

2×2 matrix with 16.16 fixed-point entries. Used for glyph transformations (scaling, rotation, skewing).

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Matrix::identity

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fn Matrix::identity() -> Matrix

Identity matrix.

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Matrix::invert

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fn Matrix::invert(self : Matrix) -> Unit raise @bikallem/freetype/error.FTError
FTError

Invert this matrix in place. Port of ftcalc.c FT_Matrix_Invert.

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Matrix::multiply

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fn Matrix::multiply(self : Matrix, a : Matrix) -> Unit

Multiply matrix a into self (self = a * self). Port of ftcalc.c FT_Matrix_Multiply.

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Matrix::new

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fn Matrix::new(xx : Fixed, xy : Fixed, yx : Fixed, yy : Fixed) -> Matrix

Create a matrix with the given entries.

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Matrix::set_xx

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fn Matrix::set_xx(self : Matrix, v : Fixed) -> Unit

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Matrix::set_xy

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fn Matrix::set_xy(self : Matrix, v : Fixed) -> Unit

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Matrix::set_yx

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fn Matrix::set_yx(self : Matrix, v : Fixed) -> Unit

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Matrix::set_yy

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fn Matrix::set_yy(self : Matrix, v : Fixed) -> Unit

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Matrix::transform

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fn Matrix::transform(self : Matrix, x : Int64, y : Int64) -> (Int64, Int64)

Transform a vector (x, y) by this matrix. Returns (xxx + xyy, yxx + yyy).

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Matrix::xx

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fn Matrix::xx(self : Matrix) -> Fixed

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Matrix::xy

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fn Matrix::xy(self : Matrix) -> Fixed

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Matrix::yx

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fn Matrix::yx(self : Matrix) -> Fixed

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Matrix::yy

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fn Matrix::yy(self : Matrix) -> Fixed

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ANGLE_2PI

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let ANGLE_2PI : Int64

FT_ANGLE_2PI = 360 << 16

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ANGLE_PI

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let ANGLE_PI : Int64

FT_ANGLE_PI = 180 << 16

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ANGLE_PI2

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let ANGLE_PI2 : Int64

FT_ANGLE_PI2 = 90 << 16

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ANGLE_PI4

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let ANGLE_PI4 : Int64

FT_ANGLE_PI4 = 45 << 16

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angle_diff

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fn angle_diff(angle1 : Int64, angle2 : Int64) -> Int64

Compute difference between two angles, normalized to [-PI, PI].

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atan2

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fn atan2(dx : Int64, dy : Int64) -> Int64

Arctangent of (dx, dy). Returns angle in 16.16 degrees.

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corner_is_flat

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fn corner_is_flat(in_x : Int64, in_y : Int64, out_x : Int64, out_y : Int64) -> Bool

Test whether a corner is flat (nearly colinear). Port of ftcalc.c ft_corner_is_flat.

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corner_orientation

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fn corner_orientation(in_x : Int64, in_y : Int64, out_x : Int64, out_y : Int64) -> Int

Determine orientation of corner formed by vectors (in_x,in_y) → (out_x,out_y). Returns +1 (counter-clockwise), -1 (clockwise), or 0 (colinear).

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cos

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fn cos(angle : Int64) -> Fixed

Cosine of an angle (16.16 degrees). Returns Fixed.

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div_fix

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fn div_fix(a : Int64, b : Int64) -> Fixed

FT_DivFix: compute (a << 16) / b with rounding. Returns 16.16 fixed. Port of ftcalc.c FT_DivFix (64-bit path).

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msb

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fn msb(z : UInt) -> Int

FT_MSB: return index of the most significant bit (0-based). Returns -1 if z == 0.

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mul_div

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fn mul_div(a : Int64, b : Int64, c : Int64) -> Int64

FT_MulDiv: compute (a * b + c/2) / c with rounding to nearest. Port of ftcalc.c FT_MulDiv (64-bit path).

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mul_fix

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fn mul_fix(a : Fixed, b : Fixed) -> Fixed

FT_MulFix: multiply two 16.16 fixed-point values, return 16.16 result. Equivalent to (a * b) / 0x10000 with rounding. Port of ftcalc.c FT_MulFix (64-bit path).

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sin

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fn sin(angle : Int64) -> Fixed

Sine of an angle (16.16 degrees). Returns Fixed.

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sqrt_fixed

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fn sqrt_fixed(v : UInt64) -> UInt

FT_SqrtFixed: integer square root of a 16.16 fixed-point value. Uses Babylonian method. Port of ftcalc.c FT_SqrtFixed.

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tan

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fn tan(angle : Int64) -> Fixed

Tangent of an angle (16.16 degrees). Returns Fixed.

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vector_from_polar

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fn vector_from_polar(length : Int64, angle : Int64) -> (Int64, Int64)

Create vector from polar coordinates (length, angle).

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vector_length

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fn vector_length(x : Int64, y : Int64) -> Int64

Compute length of vector (x, y).

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vector_polarize

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fn vector_polarize(x : Int64, y : Int64) -> (Int64, Int64)

Convert vector to polar form: (length, angle).

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vector_rotate

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fn vector_rotate(x : Int64, y : Int64, angle : Int64) -> (Int64, Int64)

Rotate vector (x, y) by angle. Returns rotated (x, y).

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vector_unit

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fn vector_unit(angle : Int64) -> (Fixed, Fixed)

Compute unit vector for the given angle (16.16 degrees). Returns (cos, sin) as Fixed values.

Source Files

Site source Report issue Packages Build queue Skills Statistics

#F26Dot6

#F26Dot6::ceil

#F26Dot6::floor

#F26Dot6::from_int

#F26Dot6::from_pixels

#F26Dot6::from_raw

#F26Dot6::round

#F26Dot6::to_int

#F26Dot6::to_raw

#F26Dot6::val

#F26Dot6::zero

#F2Dot14

#F2Dot14::from_raw

#F2Dot14::one

#F2Dot14::to_fixed

#F2Dot14::to_raw

#F2Dot14::val

#F2Dot14::zero

#Fixed

#Fixed::ceil

#Fixed::floor

#Fixed::from_int

#Fixed::from_raw

#Fixed::one

#Fixed::round

#Fixed::to_int

#Fixed::to_raw

#Fixed::val

#Fixed::zero

#Matrix

#Matrix::identity

#Matrix::invert

#Matrix::multiply

#Matrix::new

#Matrix::set_xx

#Matrix::set_xy

#Matrix::set_yx

#Matrix::set_yy

#Matrix::transform

#Matrix::xx

#Matrix::xy

#Matrix::yx

#Matrix::yy

#ANGLE_2PI

#ANGLE_PI

#ANGLE_PI2

#ANGLE_PI4

#angle_diff

#atan2

#corner_is_flat

#corner_orientation

#cos

#div_fix

#msb

#mul_div

#mul_fix

#sin

#sqrt_fixed

#tan

#vector_from_polar

#vector_length

#vector_polarize

#vector_rotate

#vector_unit

Source Files

#
F26Dot6

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F26Dot6::ceil

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F26Dot6::floor

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F26Dot6::from_int

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F26Dot6::from_pixels

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F26Dot6::from_raw

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F26Dot6::round

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F26Dot6::to_int

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F26Dot6::to_raw

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F26Dot6::val

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F26Dot6::zero

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F2Dot14

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F2Dot14::from_raw

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F2Dot14::one

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F2Dot14::to_fixed

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F2Dot14::to_raw

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F2Dot14::val

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F2Dot14::zero

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Fixed

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Fixed::ceil

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Fixed::floor

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Fixed::from_int

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Fixed::from_raw

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Fixed::one

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Fixed::round

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Fixed::to_int

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Fixed::to_raw

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Fixed::val

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Fixed::zero

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Matrix

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Matrix::identity

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Matrix::invert

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Matrix::multiply

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Matrix::new

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Matrix::set_xx

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Matrix::set_xy

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Matrix::set_yx

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Matrix::set_yy

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Matrix::transform

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Matrix::xx

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Matrix::xy

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Matrix::yx

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Matrix::yy

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ANGLE_2PI

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ANGLE_PI

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ANGLE_PI2

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ANGLE_PI4

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angle_diff

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atan2

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corner_is_flat

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corner_orientation

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cos

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div_fix

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msb

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mul_div

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mul_fix

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sin

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sqrt_fixed

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tan

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vector_from_polar

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vector_length

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vector_polarize

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vector_rotate

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vector_unit