Index of values

vec *** f is mult vec f.

v1 **. v2 is dot v1 v2.

v1 ++ v2 is add v1 v2.

v1 -- v2 is sub v1 v2.

vec // f is div vec f.

~. i is float_of_int i.

~< (x, y) is x.

~> (x, y) is y.

~|| vec is mag vec.

abs i is the absolute value of i.

absf f is the absolute value of f.

acos f is the inverse cosine of f.

add v1 v2 is the sum of v1 and v2.

anchor1 bez is the first anchor point of bez.

anchor2 bez is the second anchor point of bez.

angle_avg theta1 theta2 is the average angle between theta1 and theta2.

angle_between v1 v2 is the smallest angle between v1 and v2.

angle_diff theta1 theta2 is the difference between the angles theta1 and theta2.

angle_sum theta1 theta2 is the sum of the angles theta1 and theta2.

apply_paint_update update paint is paint with update applied.

arc point size theta1 theta2 is the shape representing the arc (portion of a full ellipse) centered at point and inscribed in rect point ~align:`Center size from angle theta1 to theta2.

asin f is the inverse sine of f.

atan f is the inverse tangent of f.

atan2 y x is the angle from the origin to (y, x).

background color is the shape that sets the background to color.

begin_draw () is called before draw begins.

bezier bez is the shape representing the Bezier curve bez.

bleach shape is shape with all color (fill or stroke) information removed.

ceil f is the integer closest to f in the direction of positive infinity.

char_of_string s is the sole character in s if s has length one; raises Failure "char_of_string" otherwise.

check_key config char is true if the key char is pressed in config and false otherwise.

check_key_uchar config char is true if the key char is pressed in config and false otherwise.

circle point radius is ellipse point (radius, radius).

clear buffer does not modify the buffer.

clear buffer removes all rendered shapes from buffer.

constrain i min max is min if i <= min, max if i >= max, or i otherwise.

constrainf f min max is min if f <= min, max if f >= max, or f otherwise.

control1 bez is the first control point of bez.

control2 bez is the second control point of bez.

cos theta is the cosine of theta.

create a1 c1 c2 a2 is (a1, c1, c2, a2).

create x y is (x, y).

create is the default paint.

create_buffer frame_rate display is a new buffer with the specified frame rate and display settings.

degrees theta is theta, which is in radians, converted to degrees.

The type of the display, e.g.

dist v1 v2 is the distance between v1 and v2, which is equivalent to mag (sub v1 v2).

dist x1 y1 x2 y2 is the distance between the points (x1, y1) and (x2, y2).

distf x1 y1 x2 y2 is the distance between the points (x1, y1) and (x2, y2).

div vec f is mult vec (1. /. f).

dot v1 v2 is the dot product of v1 and v2, i.e.

draw config state is the shape that should be drawn in the given state.

e is the constant e.

ellipse point size is the shape representing the ellipse centered at point and inscribed in rect point ~align:`Center size.

empty is the shape that draws nothing.

end_draw () is called after draw ends.

event_queue buffer retrieves and removes the list of queued events for buffer.

fill color shape is shape with fill color, used to draw the inside of shapes.

find_name name shape is Some found where found is the first shape tagged with name in shape, or None if shape contains no shapes tagged name.

find_names name shape is the list of all shapes in shape that are tagged with name.

find_tag tag shape is Some found where found is the first shape tagged with tag in shape, or None if shape contains no shapes tagged tag.

find_tags tag shape is the list of all shapes in shape that are tagged with tag.

floor f is the integer closest to f in the direction of negative infinity.

get_keys config is the list of all keys that are currently pressed in config, or [] if there are no keys pressed.

key_keys_uchar config is the list of all keys that are currently pressed in config, or [] if there are no keys pressed.

gray val is the opaque color represented by the grayscale value val, which is equivalent to each of red, green, and blue values of val.

gray val a is gray val, but with an alpha value of a.

group shapes is the shape that draws shapes in order.

half_pi is pi /. 2..

heading vec is the heading of vec, i.e.

height buffer is the height of buffer.

hex hex_str is the color represented by hex_str in hexadecimal notation.

hsv h s v is the opaque color represented by the hue, saturation, and value values of h, s, and v, respectively.

hsva h s v a is hsv h s v, but with an alpha value of a.

interpolate bez time is the point at time along bez, where time is in [0, 1].

key_pressed config state is the state that results after a key is pressed in state.

key_released config state is the state that results after a key is released in state.

key_typed config state is the state that results after a key is typed (pressed and released) in state.

lerp v1 v2 t is the linear interpolation from v1 to v2 by t, where t is in [0, 1].

lerp a b t is the linear interpolation from a to b by t, where t is in [0, 1].

lerpf a b t is the linear interpolation from a to b by t, where t is in [0, 1].

limit vec f is vec with a maximum magnitude of f, which is equivalent to with_mag vec (min (mag vec) f).

line v1 v2 is the shape representing the line between v1 and v2.

log f b is the base-b logarithm of f.

loop config state is the state that results after advancing state through one time step.

mag vec is the magnitude of vec, i.e.

mag x y is dist x y 0 0.

mag_sq vec is the squared magnitude of vec, i.e.

magf x y is distf x y 0 0.

map i low1 high1 low2 high2 is i mapped from the range [low1, high1] to the range [low2, high2].

mapf f low1 high1 low2 high2 is f mapped from the range [low1, high1] to the range [low2, high2].

max a b is the maximum of a and b.

maxf a b is the maximum of a and b.

min a b is the minimum of a and b.

minf a b is the minimum of a and b.

mouse_clicked config state is the state that results after the mouse is clicked (pressed and then released) in state.

mouse_dragged config state is the state that results after the mouse is dragged (moved while pressed) in state.

mouse_moved config state is the state that results after the mouse is moved in state.

mouse_pressed config state is the state that results after the mouse is pressed in state.

mouse_released config state is the state results after the mouse is released in state.

mouse_scrolled config state is the state that results after the mouse is scrolled in state.

mult vec f is the scalar multiplication of vec by f.

name n shape is shape tagged with name n, which can be looked up with find_name.

no_fill shape is shape with fill cleared.

no_stroke shape is shape with stroke cleared.

norm vec is vec with a magnitude of 1., which is equivalent to div vec (mag vec).

norm i low high is map i low high 0 1.

normf f low high is mapf f low high 0. 1..

of_angle theta is the unit vector (cos theta, sin theta).

of_tuple (x, y) is (x, y).

pi is the constant pi.

point vertex is the shape representing the point at position vertex.

poly vertices is the shape representing the polygon with vertices.

project v1 v2 is the projection of v1 on to v2.

quad v1 v2 v3 v3 is polygon [v1; v2; v3; v4].

radians d is d, which is in degrees, converted to radians.

random_bool () is either true or false with an equal probability of either.

random_float bound is a random float between 0. (inclusive) and bound (exclusive).

random_int bound is a random integer between 0 (inclusive) and bound (exclusive).

rect point size is the shape representing the rectangle with corner at point and dimensions size.

render buffer shape draws shape to buffer.

rgb r g b is the opaque color with red, green and blue values of r, g, and b, respectively.

rgba r g b a is rgb r g b, but with an alpha value of a.

rotate angle shape is shape rotated angle radians about the origin.

rotate vec theta is vec rotated by angle theta.

round f is the integer closest to f; 0.5 rounds up.

run_sketch (module MySketch) runs the sketch in the module MySketch.

scale (scale_x, scale_y) shape is shape scaled by factors of scale_x and scale_y in the x and y directions, respectively, about the origin.

setup config is the initial state.

shape sh tr is the shape sh translated by tr.

sin theta is the sine of theta.

sqrt f is the square root of f.

string_of_char c is the string containing the character c.

stroke color shape is shape with stroke color, used to draw the outline of shapes.

stroke_cap c shape is shape with stroke cap c, the way that the ends of lines are drawn.

stroke_join j shape is shape with stroke join j, the way that vertices between two lines are drawn.

stroke_weight w shape is shape with stroke weight w, the width of the stroke lines.

sub v1 v2 is the difference between v1 and v2, which is equivalent to add v1 (mult v2 (-1.)).

tag tg shape is shape tagged with tag tg, which can be looked up with find_tag.

tan theta is the tangent of theta.

tangent bez time is the vector tanget to bez at time, where time is in [0, 1].

to_string vec is the string representation of vec.

translate tr shape is shape translated by offset tr.

triangle v1 v2 v3 is polygon [v1; v2; v3].

two_pi is pi *. 2..

width buffer is the width of buffer.

window_closed config state is the state that results after the window is closed in state.

window_resized config state is the state that results after the window is resized in state.

with_mag vec f is vec with a magnitude of f, which is equivalent to mult (norm vec) f.