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"""
Press and drag the mouse to scroll the texture
"""
from pathlib import Path
import moderngl_window
from moderngl_window import geometry, resources
resources.register_dir((Path(__file__).parent / "resources").resolve())
class QuadFullscreenScroll(moderngl_window.WindowConfig):
title = "Quad Fullscreen Scroll"
aspect_ratio = None
def __init__(self, **kwargs):
super().__init__(**kwargs)
self.quad = geometry.quad_fs()
self.texture = self.load_texture_2d("textures/python-bg.png")
self.prog = self.load_program("programs/texture_mouse_scroll.glsl")
self.mouse_pos = 0, 0
def on_render(self, time: float, frame_time: float):
self.ctx.clear()
self.texture.use(location=0)
self.prog["texture0"] = 0
self.prog["offset"] = (
-self.mouse_pos[0] / self.wnd.buffer_width,
self.mouse_pos[1] / self.wnd.buffer_height,
)
self.quad.render(self.prog)
def on_mouse_drag_event(self, x, y, dx, dy):
self.mouse_pos = self.mouse_pos[0] + dx, self.mouse_pos[1] + dy
print(self.mouse_pos)
if __name__ == "__main__":
QuadFullscreenScroll.run()
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