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