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import sokol
import sokol.sapp
import sokol.gfx
import sokol.sgl
struct AppState {
pass_action C.sg_pass_action
}
const (
used_import = sokol.used_import
)
fn main() {
state := &AppState{
pass_action: gfx.create_clear_pass(0.1, 0.1, 0.1, 1.0)
}
title := 'Sokol Drawing Template'
desc := C.sapp_desc{
user_data: state
init_userdata_cb: init
frame_userdata_cb: frame
window_title: title.str
html5_canvas_name: title.str
}
sapp.run(&desc)
}
fn init(user_data voidptr) {
desc := sapp.create_desc() // C.sg_desc{
gfx.setup(&desc)
sgl_desc := C.sgl_desc_t{}
sgl.setup(&sgl_desc)
}
fn frame(user_data voidptr) {
// println('frame')
state := &AppState(user_data)
draw()
gfx.begin_default_pass(&state.pass_action, sapp.width(), sapp.height())
sgl.draw()
gfx.end_pass()
gfx.commit()
}
fn draw() {
// first, reset and setup ortho projection
sgl.defaults()
sgl.matrix_mode_projection()
sgl.ortho(0.0, f32(sapp.width()), f32(sapp.height()), 0.0, -1.0, 1.0)
sgl.c4b(255, 0, 0, 128)
draw_hollow_rect(10, 10, 100, 30)
sgl.c4b(25, 150, 0, 128)
draw_filled_rect(10, 150, 80, 40)
// line(0, 0, 500, 500)
}
fn draw_hollow_rect(x f32, y f32, w f32, h f32) {
sgl.begin_line_strip()
sgl.v2f(x, y)
sgl.v2f(x + w, y)
sgl.v2f(x + w, y + h)
sgl.v2f(x, y + h)
sgl.v2f(x, y)
sgl.end()
}
fn draw_filled_rect(x f32, y f32, w f32, h f32) {
sgl.begin_quads()
sgl.v2f(x, y)
sgl.v2f(x + w, y)
sgl.v2f(x + w, y + h)
sgl.v2f(x, y + h)
sgl.end()
}
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