screen_y()

Takes a three-dimensional X, Y, Z position and returns the Y value for where it will appear on a (two-dimensional) screen.

Examples

def setup():
    py5.size(100, 100, py5.P3D)


def draw():
    py5.background(204)

    x = py5.mouse_x
    y = py5.mouse_y
    z = -100

    # draw "X" at z = -100
    py5.stroke(255)
    py5.line(x-10, y-10, z, x+10, y+10, z)
    py5.line(x+10, y-10, z, x-10, y+10, z)

    # draw gray line at z = 0 and same
    # y value. notice the parallax
    py5.stroke(102)
    py5.line(0, y, 0, py5.width, y, 0)

    # draw black line at z = 0 to match
    # the y value element drawn at z = -100
    py5.stroke(0)
    the_y = py5.screen_y(x, y, z)
    py5.line(0, the_y, 0, py5.width, the_y, 0)

Description

Takes a three-dimensional X, Y, Z position and returns the Y value for where it will appear on a (two-dimensional) screen.

Underlying Processing method: screenY

Signatures

screen_y(
    x: float,  # 3D x-coordinate to be mapped
    y: float,  # 3D y-coordinate to be mapped
    /,
) -> float

screen_y(
    x: float,  # 3D x-coordinate to be mapped
    y: float,  # 3D y-coordinate to be mapped
    z: float,  # 3D z-coordinate to be mapped
    /,
) -> float

Updated on March 06, 2023 02:49:26am UTC