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
134rotation_around_paddle1: float = 0.0

Event Loop

src/modelviewprojection/demo13.py
184while not glfw.window_should_close(window):

...
src/modelviewprojection/demo13.py
229    GL.glColor3f(0.0, 0.0, 1.0)
230    GL.glBegin(GL.GL_QUADS)
231    for ms in square:
232        ms_to_ndc: mu2d.InvertibleFunction = mu2d.compose(
233            [
234                # camera space to NDC
235                mu2d.uniform_scale(1.0 / 10.0),
236                # world space to camera space
237                mu2d.inverse(mu2d.translate(camera.position_ws)),
238                # model space to world space
239                mu2d.compose(
240                    [
241                        mu2d.translate(paddle1.position),
242                        mu2d.rotate(paddle1.rotation),
243                    ]
244                ),
245                # square space to paddle 1 space
246                mu2d.compose(
247                    [
248                        mu2d.rotate(rotation_around_paddle1),
249                        mu2d.translate(mu2d.Vector2D(x=2.0, y=0.0)),
250                        mu2d.rotate(square_rotation),
251                    ]
252                ),
253            ]
254        )
255        square_vector_ndc: mu2d.Vector2D = ms_to_ndc(ms)
256        GL.glVertex2f(square_vector_ndc.x, square_vector_ndc.y)
257    GL.glEnd()