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57 lines
1.8 KiB
V
57 lines
1.8 KiB
V
import gg
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import gx
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import os.asset
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import sokol.sgl
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// If you have emscripten (see https://emscripten.org/docs/getting_started/index.html), you can compile this program to WASM, using:
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// `v -os wasm32_emscripten -o examples/gg/rotating_textured_quad.html examples/gg/rotating_textured_quad.v`, and later check with:
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// `emrun examples/gg/rotating_textured_quad.html` .
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#flag wasm32_emscripten --embed-file @VEXEROOT/examples/assets/logo.png@/assets/logo.png
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#flag wasm32_emscripten --embed-file @VEXEROOT/examples/assets/fonts/RobotoMono-Regular.ttf@/assets/RobotoMono-Regular.ttf
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pub struct Window {
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pub mut:
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ctx &gg.Context = unsafe { nil }
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img gg.Image
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}
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pub fn (mut window Window) init() {
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image_path := asset.get_path('../assets', 'logo.png')
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window.img = window.ctx.create_image(image_path) or { panic(err) }
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}
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pub fn (mut window Window) draw() {
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angle := f32(window.ctx.frame) / 64 // since window.ctx.frame is increased by 1 on every frame -> the angle will be increasing too
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window.ctx.begin()
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sgl.load_pipeline(window.ctx.pipeline.alpha)
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sgl.translate(250, 250, 0) // center of the screen
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sgl.rotate(angle, 0.0, 0.0, 1.0) // rotate around the Z axis pointing towards the camera
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sgl.enable_texture()
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sgl.texture(window.img.simg, window.img.ssmp)
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sgl.begin_quads()
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sgl.c4b(255, 255, 255, 255)
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sgl.v3f_t2f(200, 200, 0, 1.0, 1.0)
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sgl.v3f_t2f(200, -200, 0, 1.0, 0.0)
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sgl.v3f_t2f(-200, -200, 0, 0.0, 0.0)
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sgl.v3f_t2f(-200, 200, 0, 0.0, 1.0)
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sgl.end()
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sgl.disable_texture()
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window.ctx.end()
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}
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fn main() {
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mut window := &Window{}
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window.ctx = gg.new_context(
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window_title: 'Rotating V logo'
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bg_color: gx.light_green
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width: 500
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height: 500
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user_data: window
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init_fn: window.init
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frame_fn: window.draw
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font_path: asset.get_path('../assets', 'RobotoMono-Regular.ttf')
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)
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window.ctx.run()
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}
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