Rotate the Square Around Paddle 1 - Demo 13

Purpose

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/demo13/demo.py
196rotation_around_paddle1: float = 0.0

Event Loop

src/demo13/demo.py
246while not glfw.window_should_close(window):

...
src/demo13/demo.py
282    glColor3f(0.0, 0.0, 1.0)
283    glBegin(GL_QUADS)
284    for square_vertex_in_model_space in square:
285        paddle_1_space: Vertex = square_vertex_in_model_space.rotate(square_rotation) \
286                                                             .translate(Vertex(x=2.0, y=0.0)) \
287                                                             .rotate(rotation_around_paddle1)
288        world_space: Vertex = paddle_1_space.rotate(paddle1.rotation) \
289                                            .translate(paddle1.position)
290        camera_space: Vertex = world_space.translate(-camera.position_worldspace)
291        ndc_space: Vertex = camera_space.uniform_scale(scalar=1.0/10.0)
292        glVertex2f(ndc_space.x, ndc_space.y)
293    glEnd()