Newtype to avoid accidental use of strings

Newtype to avoid accidental use of ints

Opaque context that needs to be passed around

Affine matrix

[sx kx tx]
[ky sy ty]
[ 0  0  1]

rgba

Begin drawing a new frame

Calls to nanovg drawing API should be wrapped in beginFrame & endFrame.

beginFrame defines the size of the window to render to in relation currently set viewport (i.e. glViewport on GL backends). Device pixel ration allows to control the rendering on Hi-DPI devices.

For example, GLFW returns two dimension for an opened window: window size and frame buffer size. In that case you would set windowWidth/Height to the window size devicePixelRatio to: frameBufferWidth / windowWidth.

Cancels drawing the current frame.

Ends drawing flushing remaining render state.

Returns a color value from red, green, blue values. Alpha will be set to 255 (1.0f).

Returns a color value from red, green, blue values. Alpha will be set to 1.0f.

Returns a color value from red, green, blue and alpha values.

Returns a color value from red, green, blue and alpha values.

Linearly interpolates from color c0 to c1, and returns resulting color value.

Sets transparency of a color value.

Sets transparency of a color value.

Returns color value specified by hue, saturation and lightness. HSL values are all in range [0..1], alpha will be set to 255.

Returns color value specified by hue, saturation and lightness and alpha. HSL values are all in range [0..1], alpha in range [0..255]

Pushes and saves the current render state into a state stack.

A matching restore must be used to restore the state.

Pops and restores current render state.

Resets current render state to default values. Does not affect the render state stack.

Sets current stroke style to a solid color.

Sets current stroke style to a paint, which can be a one of the gradients or a pattern.

Sets current fill style to a solid color.

Sets current fill style to a paint, which can be a one of the gradients or a pattern.

Sets the miter limit of the stroke style. Miter limit controls when a sharp corner is beveled.

Sets the stroke width of the stroke style.

Sets how the end of the line (cap) is drawn, Can be one of: Butt (default), Round, Square.

Sets how sharp path corners are drawn. Can be one of Miter (default), Round, 'Bevel.

Sets the transparency applied to all rendered shapes. Already transparent paths will get proportionally more transparent as well.

Resets current transform to a identity matrix.

Premultiplies current coordinate system by specified matrix. The parameters are interpreted as matrix as follows:

[a c e]
[b d f]
[0 0 1]

Translates current coordinate system.

Rotates current coordinate system. Angle is specified in radians.

Skews the current coordinate system along X axis. Angle is specified in radians.

Skews the current coordinate system along Y axis. Angle is specified in radians.

Scales the current coordinate system.

Returns the current transformation matrix.

Sets the transform to identity matrix.

Sets the transform to translation matrix matrix.

Sets the transform to scale matrix.

Sets the transform to rotate matrix. Angle is specified in radians.

Sets the transform to skew-x matrix. Angle is specified in radians.

Sets the transform to skew-y matrix. Angle is specified in radians.

Sets the transform to the result of multiplication of two transforms, of A = A*B.

Sets the transform to the result of multiplication of two transforms, of A = B*A.

Sets the destination to inverse of specified transform. Returns 1 if the inverse could be calculated, else 0.

Transform a point by given transform.

Converts degrees to radians.

Converts radians to degrees.

Creates image by loading it from the disk from specified file name.

Creates image by loading it from the specified chunk of memory.

Creates image from specified image data.

Updates image data specified by image handle.

Returns the dimensions of a created image.

Deletes created image.

Creates and returns a linear gradient. Parameters (sx,sy)-(ex,ey) specify the start and end coordinates of the linear gradient, icol specifies the start color and ocol the end color. The gradient is transformed by the current transform when it is passed to fillPaint or strokePaint.

Creates and returns a box gradient. Box gradient is a feathered rounded rectangle, it is useful for rendering drop shadows or highlights for boxes. Parameters (x,y) define the top-left corner of the rectangle, (w,h) define the size of the rectangle, r defines the corner radius, and f feather. Feather defines how blurry the border of the rectangle is. Parameter icol specifies the inner color and ocol the outer color of the gradient. The gradient is transformed by the current transform when it is passed to fillPaint or strokePaint.

Creates and returns a radial gradient. Parameters (cx,cy) specify the center, inr and outr specify the inner and outer radius of the gradient, icol specifies the start color and ocol the end color. The gradient is transformed by the current transform when it is passed to fillPaint or strokePaint.

Creates and returns an image patter. Parameters (ox,oy) specify the left-top location of the image pattern, (ex,ey) the size of one image, angle rotation around the top-left corner, image is handle to the image to render. The gradient is transformed by the current transform when it is passed to fillPaint or strokePaint.

Sets the current scissor rectangle. The scissor rectangle is transformed by the current transform.

Intersects current scissor rectangle with the specified rectangle. The scissor rectangle is transformed by the current transform. Note: in case the rotation of previous scissor rect differs from the current one, the intersection will be done between the specified rectangle and the previous scissor rectangle transformed in the current transform space. The resulting shape is always rectangle.

Reset and disables scissoring.

Clears the current path and sub-paths.

Starts new sub-path with specified point as first point.

Adds line segment from the last point in the path to the specified point.

Adds cubic bezier segment from last point in the path via two control points to the specified point.

Adds quadratic bezier segment from last point in the path via a control point to the specified point

Adds an arc segment at the corner defined by the last path point, and two specified points.

Closes current sub-path with a line segment.

Sets the current sub-path winding, see NVGwinding and NVGsolidity.

Creates new circle arc shaped sub-path. The arc center is at cx,cy, the arc radius is r, and the arc is drawn from angle a0 to a1, and swept in direction dir (NVG_CCW, or NVG_CW). Angles are specified in radians.

Creates new rectangle shaped sub-path.

Creates new rounded rectangle shaped sub-path.

Creates new ellipse shaped sub-path.

Creates new circle shaped sub-path.

Fills the current path with current fill style.

Fills the current path with current stroke style.

Vector of 2 strict elements

Vector of 3 strict elements

Vector of 4 strict elements

Type synonym for 2x3 matrices