Rotate the Square Around Paddle 1 - Demo 13

Objective

Rotate the square around paddle1’s center.

Demo 13

Demo 13

Move the Paddles using the Keyboard

Keyboard Input

Action

w

Move Left Paddle Up

s

Move Left Paddle Down

k

Move Right Paddle Down

i

Move Right Paddle Up

d

Increase Left Paddle’s Rotation

a

Decrease Left Paddle’s Rotation

l

Increase Right Paddle’s Rotation

j

Decrease Right Paddle’s Rotation

UP

Move the camera up, moving the objects down

DOWN

Move the camera down, moving the objects up

LEFT

Move the camera left, moving the objects right

RIGHT

Move the camera right, moving the objects left

q

Rotate the square around its center

e

Rotate the square around paddle 1’s center

Description

Cayley Graph

Demo 13

Demo 13

src/modelviewprojection/demo13.py
163rotation_around_paddle1: float = 0.0

Event Loop

src/modelviewprojection/demo13.py
213while not glfw.window_should_close(window):

...
src/modelviewprojection/demo13.py
254    glColor3f(0.0, 0.0, 1.0)
255    glBegin(GL_QUADS)
256    for ms in square:
257        ms_to_ndc: InvertibleFunction[Vector2D] = compose(
258            # camera space to NDC
259            uniform_scale(1.0 / 10.0),
260            # world space to camera space
261            inverse(translate(camera.position_ws)),
262            # model space to world space
263            compose(translate(paddle1.position),
264                    rotate(paddle1.rotation)),
265            # square space to paddle 1 space
266            compose(rotate(rotation_around_paddle1),
267                    translate(Vector2D(x=2.0, y=0.0)),
268                    rotate(square_rotation)))
269        square_vector_ndc: Vector2D = ms_to_ndc(ms)
270        glVertex2f(square_vector_ndc.x,
271                   square_vector_ndc.y)
272    glEnd()