796 lines
19 KiB
V
796 lines
19 KiB
V
// Copyright (c) 2019-2021 Alexander Medvednikov. All rights reserved.
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// Use of this source code is governed by an MIT license that can be found in the LICENSE file.
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module gg
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import os
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import gx
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import sokol
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import sokol.sapp
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import sokol.sgl
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import sokol.gfx
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import math
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import math.mathutil as mu
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// import time
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pub type FNCb = fn (x voidptr)
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pub type FNEvent = fn (e &Event, x voidptr)
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pub type FNFail = fn (msg string, x voidptr)
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pub type FNKeyDown = fn (c KeyCode, m Modifier, x voidptr)
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pub type FNMove = fn (x f32, y f32, z voidptr)
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pub type FNChar = fn (c u32, x voidptr)
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pub struct Event {
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pub mut:
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frame_count u64
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typ sapp.EventType
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key_code KeyCode
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char_code u32
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key_repeat bool
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modifiers u32
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mouse_button sapp.MouseButton
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mouse_x f32
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mouse_y f32
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mouse_dx f32
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mouse_dy f32
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scroll_x f32
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scroll_y f32
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num_touches int
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touches [8]C.sapp_touchpoint
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window_width int
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window_height int
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framebuffer_width int
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framebuffer_height int
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}
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pub enum Modifier {
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shift = 1 //(1<<0)
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ctrl = 2 //(1<<1)
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alt = 4 //(1<<2)
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super = 8 //(1<<3)
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}
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pub struct Config {
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pub:
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width int
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height int
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use_ortho bool
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retina bool
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resizable bool
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user_data voidptr
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font_size int
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create_window bool
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// window_user_ptr voidptr
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window_title string
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borderless_window bool
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always_on_top bool
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bg_color gx.Color
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init_fn FNCb = voidptr(0)
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frame_fn FNCb = voidptr(0)
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native_frame_fn FNCb = voidptr(0)
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cleanup_fn FNCb = voidptr(0)
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fail_fn FNFail = voidptr(0)
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event_fn FNEvent = voidptr(0)
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keydown_fn FNKeyDown = voidptr(0)
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// special case of event_fn
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char_fn FNChar = voidptr(0)
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// special case of event_fn
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move_fn FNMove = voidptr(0)
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// special case of event_fn
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click_fn FNMove = voidptr(0)
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// special case of event_fn
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// wait_events bool // set this to true for UIs, to save power
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fullscreen bool
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scale f32 = 1.0
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sample_count int
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// vid needs this
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// init_text bool
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font_path string
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custom_bold_font_path string
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ui_mode bool // refreshes only on events to save CPU usage
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// font bytes for embedding
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font_bytes_normal []byte
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font_bytes_bold []byte
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font_bytes_mono []byte
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font_bytes_italic []byte
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native_rendering bool // Cocoa on macOS/iOS, GDI+ on Windows
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}
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pub struct Context {
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render_text bool
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mut:
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// a cache with all images created by the user. used for sokol image init and to save space
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// (so that the user can store image ids, not entire Image objects)
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image_cache []Image
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needs_refresh bool = true
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ticks int
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pub:
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native_rendering bool
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pub mut:
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scale f32 = 1.0
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// will get set to 2.0 for retina, will remain 1.0 for normal
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width int
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height int
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clear_pass C.sg_pass_action
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window C.sapp_desc
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timage_pip C.sgl_pipeline
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config Config
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ft &FT
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font_inited bool
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ui_mode bool // do not redraw everything 60 times/second, but only when the user requests
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mbtn_mask byte
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}
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pub struct Size {
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pub:
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width int
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height int
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}
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fn gg_init_sokol_window(user_data voidptr) {
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mut g := unsafe { &Context(user_data) }
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desc := sapp.create_desc()
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/*
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desc := C.sg_desc{
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mtl_device: sapp.metal_get_device()
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mtl_renderpass_descriptor_cb: sapp.metal_get_renderpass_descriptor
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mtl_drawable_cb: sapp.metal_get_drawable
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d3d11_device: sapp.d3d11_get_device()
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d3d11_device_context: sapp.d3d11_get_device_context()
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d3d11_render_target_view_cb: sapp.d3d11_get_render_target_view
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d3d11_depth_stencil_view_cb: sapp.d3d11_get_depth_stencil_view
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}
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*/
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gfx.setup(&desc)
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sgl_desc := C.sgl_desc_t{}
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sgl.setup(&sgl_desc)
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g.scale = dpi_scale()
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// is_high_dpi := sapp.high_dpi()
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// fb_w := sapp.width()
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// fb_h := sapp.height()
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// println('g.scale=$g.scale is_high_dpi=$is_high_dpi fb_w=$fb_w fb_h=$fb_h')
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// if g.config.init_text {
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// `os.is_file()` won't work on Android if the font file is embedded into the APK
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exists := $if !android { os.is_file(g.config.font_path) } $else { true }
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if g.config.font_path != '' && exists {
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// t := time.ticks()
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g.ft = new_ft(
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font_path: g.config.font_path
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custom_bold_font_path: g.config.custom_bold_font_path
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scale: dpi_scale()
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) or { panic(err) }
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// println('FT took ${time.ticks()-t} ms')
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g.font_inited = true
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} else {
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if !exists {
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if g.config.font_bytes_normal.len > 0 {
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g.ft = new_ft(
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bytes_normal: g.config.font_bytes_normal
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bytes_bold: g.config.font_bytes_bold
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bytes_mono: g.config.font_bytes_mono
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bytes_italic: g.config.font_bytes_italic
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scale: sapp.dpi_scale()
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) or { panic(err) }
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g.font_inited = true
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} else {
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sfont := system_font_path()
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eprintln('font file "$g.config.font_path" does not exist, the system font was used instead.')
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g.ft = new_ft(
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font_path: sfont
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custom_bold_font_path: g.config.custom_bold_font_path
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scale: sapp.dpi_scale()
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) or { panic(err) }
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g.font_inited = true
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}
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}
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}
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//
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mut pipdesc := C.sg_pipeline_desc{}
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unsafe { C.memset(&pipdesc, 0, sizeof(pipdesc)) }
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pipdesc.blend.enabled = true
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pipdesc.blend.src_factor_rgb = gfx.BlendFactor(C.SG_BLENDFACTOR_SRC_ALPHA)
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pipdesc.blend.dst_factor_rgb = gfx.BlendFactor(C.SG_BLENDFACTOR_ONE_MINUS_SRC_ALPHA)
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g.timage_pip = sgl.make_pipeline(&pipdesc)
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//
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if g.config.init_fn != voidptr(0) {
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g.config.init_fn(g.config.user_data)
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}
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// Create images now that we can do that after sg is inited
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if g.native_rendering {
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return
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}
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for i in 0 .. g.image_cache.len {
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g.image_cache[i].init_sokol_image()
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}
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}
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fn gg_frame_fn(user_data voidptr) {
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mut ctx := unsafe { &Context(user_data) }
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if ctx.config.frame_fn == voidptr(0) {
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return
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}
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if ctx.native_rendering {
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// return
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}
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if ctx.ui_mode && !ctx.needs_refresh {
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// Draw 3 more frames after the "stop refresh" command
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ctx.ticks++
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if ctx.ticks > 3 {
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return
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}
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}
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ctx.config.frame_fn(ctx.config.user_data)
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ctx.needs_refresh = false
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}
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pub fn (mut ctx Context) refresh_ui() {
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ctx.needs_refresh = true
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ctx.ticks = 0
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}
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fn gg_event_fn(ce &C.sapp_event, user_data voidptr) {
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// e := unsafe { &sapp.Event(ce) }
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mut e := unsafe { &Event(ce) }
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mut g := unsafe { &Context(user_data) }
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if e.typ == .mouse_down {
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bitplace := int(e.mouse_button)
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g.mbtn_mask |= byte(1 << bitplace)
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}
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if e.typ == .mouse_up {
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bitplace := int(e.mouse_button)
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g.mbtn_mask &= ~(byte(1 << bitplace))
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}
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if e.typ == .mouse_move && e.mouse_button == .invalid {
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if g.mbtn_mask & 0x01 > 0 {
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e.mouse_button = .left
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}
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if g.mbtn_mask & 0x02 > 0 {
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e.mouse_button = .right
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}
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if g.mbtn_mask & 0x04 > 0 {
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e.mouse_button = .middle
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}
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}
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if g.config.event_fn != voidptr(0) {
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g.config.event_fn(e, g.config.user_data)
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}
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match e.typ {
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.key_down {
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if g.config.keydown_fn != voidptr(0) {
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kdfn := g.config.keydown_fn
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kdfn(e.key_code, Modifier(e.modifiers), g.config.user_data)
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}
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}
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.char {
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if g.config.char_fn != voidptr(0) {
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cfn := g.config.char_fn
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cfn(e.char_code, g.config.user_data)
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}
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}
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.mouse_move {
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if g.config.move_fn != voidptr(0) {
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cfn := g.config.move_fn
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cfn(e.mouse_x / g.scale, e.mouse_y / g.scale, g.config.user_data)
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}
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}
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.mouse_down {
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if g.config.click_fn != voidptr(0) {
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cfn := g.config.click_fn
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cfn(e.mouse_x / g.scale, e.mouse_y / g.scale, g.config.user_data)
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}
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}
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else {}
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}
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}
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fn gg_cleanup_fn(user_data voidptr) {
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mut g := unsafe { &Context(user_data) }
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if g.config.cleanup_fn != voidptr(0) {
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g.config.cleanup_fn(g.config.user_data)
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}
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}
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fn gg_fail_fn(msg charptr, user_data voidptr) {
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mut g := unsafe { &Context(user_data) }
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vmsg := unsafe { tos3(msg) }
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if g.config.fail_fn != voidptr(0) {
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g.config.fail_fn(vmsg, g.config.user_data)
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} else {
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eprintln('gg error: $vmsg')
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}
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}
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//
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pub fn new_context(cfg Config) &Context {
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mut g := &Context{
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width: cfg.width
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height: cfg.height
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config: cfg
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render_text: cfg.font_path != '' || cfg.font_bytes_normal.len > 0
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ft: 0
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ui_mode: cfg.ui_mode
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native_rendering: cfg.native_rendering
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}
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g.set_bg_color(cfg.bg_color)
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// C.printf('new_context() %p\n', cfg.user_data)
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window := C.sapp_desc{
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user_data: g
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init_userdata_cb: gg_init_sokol_window
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frame_userdata_cb: gg_frame_fn
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event_userdata_cb: gg_event_fn
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fail_userdata_cb: gg_fail_fn
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cleanup_userdata_cb: gg_cleanup_fn
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window_title: cfg.window_title.str
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html5_canvas_name: cfg.window_title.str
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width: cfg.width
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height: cfg.height
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sample_count: cfg.sample_count
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high_dpi: true
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fullscreen: cfg.fullscreen
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native_render: cfg.native_rendering
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}
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if cfg.use_ortho {
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} else {
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}
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g.window = window
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return g
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}
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pub fn (gg &Context) run() {
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sapp.run(&gg.window)
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}
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pub fn (mut ctx Context) set_bg_color(c gx.Color) {
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ctx.clear_pass = gfx.create_clear_pass(f32(c.r) / 255.0, f32(c.g) / 255.0, f32(c.b) / 255.0,
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f32(c.a) / 255.0)
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}
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// TODO: Fix alpha
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pub fn (ctx &Context) draw_rect(x f32, y f32, w f32, h f32, c gx.Color) {
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$if macos {
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if ctx.native_rendering {
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C.darwin_draw_rect(x, ctx.height - (y + h), w, h, c)
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return
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}
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}
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if c.a != 255 {
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sgl.load_pipeline(ctx.timage_pip)
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}
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sgl.c4b(c.r, c.g, c.b, c.a)
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sgl.begin_quads()
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sgl.v2f(x * ctx.scale, y * ctx.scale)
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sgl.v2f((x + w) * ctx.scale, y * ctx.scale)
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sgl.v2f((x + w) * ctx.scale, (y + h) * ctx.scale)
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sgl.v2f(x * ctx.scale, (y + h) * ctx.scale)
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sgl.end()
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}
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[inline]
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pub fn (ctx &Context) draw_square(x f32, y f32, s f32, c gx.Color) {
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ctx.draw_rect(x, y, s, s, c)
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}
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[inline]
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pub fn (ctx &Context) set_pixel(x f32, y f32, c gx.Color) {
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ctx.draw_square(x, y, 1, c)
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}
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pub fn (ctx &Context) draw_triangle(x f32, y f32, x2 f32, y2 f32, x3 f32, y3 f32, c gx.Color) {
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if c.a != 255 {
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sgl.load_pipeline(ctx.timage_pip)
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}
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sgl.c4b(c.r, c.g, c.b, c.a)
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sgl.begin_quads()
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sgl.v2f(x * ctx.scale, y * ctx.scale)
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sgl.v2f(x2 * ctx.scale, y2 * ctx.scale)
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sgl.v2f(x3 * ctx.scale, y3 * ctx.scale)
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sgl.end()
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}
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pub fn (ctx &Context) draw_empty_rect(x f32, y f32, w f32, h f32, c gx.Color) {
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if c.a != 255 {
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sgl.load_pipeline(ctx.timage_pip)
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}
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sgl.c4b(c.r, c.g, c.b, c.a)
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sgl.begin_line_strip()
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if ctx.scale == 1 {
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sgl.v2f(x, y)
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sgl.v2f(x + w, y)
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sgl.v2f(x + w, y + h)
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sgl.v2f(x, y + h)
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sgl.v2f(x, y)
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} else {
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sgl.v2f(x * ctx.scale, y * ctx.scale)
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sgl.v2f((x + w) * ctx.scale, y * ctx.scale)
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sgl.v2f((x + w) * ctx.scale, (y + h) * ctx.scale)
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sgl.v2f(x * ctx.scale, (y + h) * ctx.scale)
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sgl.v2f(x * ctx.scale, y * ctx.scale)
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}
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sgl.end()
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}
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[inline]
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pub fn (ctx &Context) draw_empty_square(x f32, y f32, s f32, c gx.Color) {
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ctx.draw_empty_rect(x, y, s, s, c)
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}
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pub fn (ctx &Context) draw_circle_line(x f32, y f32, r int, segments int, c gx.Color) {
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if c.a != 255 {
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sgl.load_pipeline(ctx.timage_pip)
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}
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sgl.c4b(c.r, c.g, c.b, c.a)
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mut theta := f32(0)
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mut xx := f32(0)
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mut yy := f32(0)
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sgl.begin_line_strip()
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for i := 0; i < segments + 1; i++ {
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theta = 2.0 * f32(math.pi) * f32(i) / f32(segments)
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xx = r * math.cosf(theta)
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yy = r * math.sinf(theta)
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sgl.v2f(xx + x, yy + y)
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}
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sgl.end()
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}
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pub fn (ctx &Context) draw_circle(x f32, y f32, r f32, c gx.Color) {
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$if macos {
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if ctx.native_rendering {
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C.darwin_draw_circle(x - r + 1, ctx.height - (y + r + 3), r, c)
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return
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}
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}
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if ctx.scale == 1 {
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ctx.draw_circle_with_segments(x, y, r, 10, c)
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} else {
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ctx.draw_circle_with_segments(x * f32(ctx.scale), y * f32(ctx.scale), r * ctx.scale,
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10, c)
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}
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}
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pub fn (ctx &Context) draw_circle_with_segments(x f32, y f32, r f32, segments int, c gx.Color) {
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if c.a != 255 {
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sgl.load_pipeline(ctx.timage_pip)
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}
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sgl.c4b(c.r, c.g, c.b, c.a)
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mut theta := f32(0)
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mut xx := f32(0)
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mut yy := f32(0)
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sgl.begin_triangle_strip()
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for i := 0; i < segments + 1; i++ {
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theta = 2.0 * f32(math.pi) * f32(i) / f32(segments)
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xx = r * math.cosf(theta)
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yy = r * math.sinf(theta)
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sgl.v2f(xx + x, yy + y)
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sgl.v2f(x, y)
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}
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sgl.end()
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}
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pub fn (ctx &Context) draw_arc_line(x f32, y f32, r int, start_angle f32, arc_angle f32, segments int, c gx.Color) {
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if c.a != 255 {
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sgl.load_pipeline(ctx.timage_pip)
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}
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sgl.c4b(c.r, c.g, c.b, c.a)
|
|
theta := f32(arc_angle / f32(segments))
|
|
tan_factor := math.tanf(theta)
|
|
rad_factor := math.cosf(theta)
|
|
mut xx := f32(r * math.cosf(start_angle))
|
|
mut yy := f32(r * math.sinf(start_angle))
|
|
sgl.begin_line_strip()
|
|
for i := 0; i < segments + 1; i++ {
|
|
sgl.v2f(xx + x, yy + y)
|
|
tx := -yy
|
|
ty := xx
|
|
xx += tx * tan_factor
|
|
yy += ty * tan_factor
|
|
xx *= rad_factor
|
|
yy *= rad_factor
|
|
}
|
|
sgl.end()
|
|
}
|
|
|
|
pub fn (ctx &Context) draw_arc(x f32, y f32, r int, start_angle f32, arc_angle f32, segments int, c gx.Color) {
|
|
if c.a != 255 {
|
|
sgl.load_pipeline(ctx.timage_pip)
|
|
}
|
|
sgl.c4b(c.r, c.g, c.b, c.a)
|
|
theta := f32(arc_angle / f32(segments))
|
|
tan_factor := math.tanf(theta)
|
|
rad_factor := math.cosf(theta)
|
|
mut xx := f32(r * math.cosf(start_angle))
|
|
mut yy := f32(r * math.sinf(start_angle))
|
|
sgl.begin_triangle_strip()
|
|
for i := 0; i < segments + 1; i++ {
|
|
sgl.v2f(xx + x, yy + y)
|
|
sgl.v2f(x, y)
|
|
tx := -yy
|
|
ty := xx
|
|
xx += tx * tan_factor
|
|
yy += ty * tan_factor
|
|
xx *= rad_factor
|
|
yy *= rad_factor
|
|
}
|
|
sgl.end()
|
|
}
|
|
|
|
pub fn (gg &Context) begin() {
|
|
if gg.render_text && gg.font_inited {
|
|
gg.ft.flush()
|
|
}
|
|
sgl.defaults()
|
|
sgl.matrix_mode_projection()
|
|
sgl.ortho(0.0, f32(sapp.width()), f32(sapp.height()), 0.0, -1.0, 1.0)
|
|
}
|
|
|
|
pub fn (gg &Context) end() {
|
|
gfx.begin_default_pass(gg.clear_pass, sapp.width(), sapp.height())
|
|
sgl.draw()
|
|
gfx.end_pass()
|
|
gfx.commit()
|
|
/*
|
|
if gg.config.wait_events {
|
|
// println('gg: waiting')
|
|
wait_events()
|
|
}
|
|
*/
|
|
}
|
|
|
|
pub fn (mut ctx Context) resize(width int, height int) {
|
|
ctx.width = width
|
|
ctx.height = height
|
|
}
|
|
|
|
pub fn (ctx &Context) draw_line(x f32, y f32, x2 f32, y2 f32, c gx.Color) {
|
|
if c.a != 255 {
|
|
sgl.load_pipeline(ctx.timage_pip)
|
|
}
|
|
if ctx.scale > 1 {
|
|
// Make the line more clear on hi dpi screens: draw a rectangle
|
|
mut width := mu.abs(x2 - x)
|
|
mut height := mu.abs(y2 - y)
|
|
if width == 0 {
|
|
width = 1
|
|
} else if height == 0 {
|
|
height = 1
|
|
}
|
|
ctx.draw_rect(x, y, width, height, c)
|
|
return
|
|
}
|
|
sgl.c4b(c.r, c.g, c.b, c.a)
|
|
sgl.begin_line_strip()
|
|
sgl.v2f(x * ctx.scale, y * ctx.scale)
|
|
sgl.v2f(x2 * ctx.scale, y2 * ctx.scale)
|
|
sgl.end()
|
|
}
|
|
|
|
pub fn (ctx &Context) draw_rounded_rect(x f32, y f32, w f32, h f32, radius f32, color gx.Color) {
|
|
sgl.c4b(color.r, color.g, color.b, color.a)
|
|
sgl.begin_triangle_strip()
|
|
mut theta := f32(0)
|
|
mut xx := f32(0)
|
|
mut yy := f32(0)
|
|
r := radius * f32(ctx.scale)
|
|
nx := x * f32(ctx.scale)
|
|
ny := y * f32(ctx.scale)
|
|
width := w * f32(ctx.scale)
|
|
height := h * f32(ctx.scale)
|
|
segments := 2 * math.pi * r
|
|
segdiv := segments / 4
|
|
rb := 0
|
|
lb := int(rb + segdiv)
|
|
lt := int(lb + segdiv)
|
|
rt := int(lt + segdiv)
|
|
// left top
|
|
lx := nx + r
|
|
ly := ny + r
|
|
for i in lt .. rt {
|
|
theta = 2 * f32(math.pi) * f32(i) / segments
|
|
xx = r * math.cosf(theta)
|
|
yy = r * math.sinf(theta)
|
|
sgl.v2f(xx + lx, yy + ly)
|
|
sgl.v2f(lx, ly)
|
|
}
|
|
// right top
|
|
mut rx := nx + 2 * width - r
|
|
mut ry := ny + r
|
|
for i in rt .. int(segments) {
|
|
theta = 2 * f32(math.pi) * f32(i) / segments
|
|
xx = r * math.cosf(theta)
|
|
yy = r * math.sinf(theta)
|
|
sgl.v2f(xx + rx, yy + ry)
|
|
sgl.v2f(rx, ry)
|
|
}
|
|
// right bottom
|
|
mut rbx := rx
|
|
mut rby := ny + 2 * height - r
|
|
for i in rb .. lb {
|
|
theta = 2 * f32(math.pi) * f32(i) / segments
|
|
xx = r * math.cosf(theta)
|
|
yy = r * math.sinf(theta)
|
|
sgl.v2f(xx + rbx, yy + rby)
|
|
sgl.v2f(rbx, rby)
|
|
}
|
|
// left bottom
|
|
mut lbx := lx
|
|
mut lby := ny + 2 * height - r
|
|
for i in lb .. lt {
|
|
theta = 2 * f32(math.pi) * f32(i) / segments
|
|
xx = r * math.cosf(theta)
|
|
yy = r * math.sinf(theta)
|
|
sgl.v2f(xx + lbx, yy + lby)
|
|
sgl.v2f(lbx, lby)
|
|
}
|
|
sgl.v2f(lx + xx, ly)
|
|
sgl.v2f(lx, ly)
|
|
sgl.end()
|
|
sgl.begin_quads()
|
|
sgl.v2f(lx, ly)
|
|
sgl.v2f(rx, ry)
|
|
sgl.v2f(rbx, rby)
|
|
sgl.v2f(lbx, lby)
|
|
sgl.end()
|
|
}
|
|
|
|
pub fn (ctx &Context) draw_empty_rounded_rect(x f32, y f32, w f32, h f32, radius f32, border_color gx.Color) {
|
|
mut theta := f32(0)
|
|
mut xx := f32(0)
|
|
mut yy := f32(0)
|
|
r := radius * f32(ctx.scale)
|
|
nx := x * f32(ctx.scale)
|
|
ny := y * f32(ctx.scale)
|
|
width := w * f32(ctx.scale)
|
|
height := h * f32(ctx.scale)
|
|
segments := 2 * math.pi * r
|
|
segdiv := segments / 4
|
|
rb := 0
|
|
lb := int(rb + segdiv)
|
|
lt := int(lb + segdiv)
|
|
rt := int(lt + segdiv)
|
|
sgl.c4b(border_color.r, border_color.g, border_color.b, border_color.a)
|
|
sgl.begin_line_strip()
|
|
// left top
|
|
lx := nx + r
|
|
ly := ny + r
|
|
for i in lt .. rt {
|
|
theta = 2 * f32(math.pi) * f32(i) / segments
|
|
xx = r * math.cosf(theta)
|
|
yy = r * math.sinf(theta)
|
|
sgl.v2f(xx + lx, yy + ly)
|
|
}
|
|
// right top
|
|
mut rx := nx + 2 * width - r
|
|
mut ry := ny + r
|
|
for i in rt .. int(segments) {
|
|
theta = 2 * f32(math.pi) * f32(i) / segments
|
|
xx = r * math.cosf(theta)
|
|
yy = r * math.sinf(theta)
|
|
sgl.v2f(xx + rx, yy + ry)
|
|
}
|
|
// right bottom
|
|
mut rbx := rx
|
|
mut rby := ny + 2 * height - r
|
|
for i in rb .. lb {
|
|
theta = 2 * f32(math.pi) * f32(i) / segments
|
|
xx = r * math.cosf(theta)
|
|
yy = r * math.sinf(theta)
|
|
sgl.v2f(xx + rbx, yy + rby)
|
|
}
|
|
// left bottom
|
|
mut lbx := lx
|
|
mut lby := ny + 2 * height - r
|
|
for i in lb .. lt {
|
|
theta = 2 * f32(math.pi) * f32(i) / segments
|
|
xx = r * math.cosf(theta)
|
|
yy = r * math.sinf(theta)
|
|
sgl.v2f(xx + lbx, yy + lby)
|
|
}
|
|
sgl.v2f(lx + xx, ly)
|
|
sgl.end()
|
|
}
|
|
|
|
// draw_convex_poly draws a convex polygon, given an array of points, and a color.
|
|
// Note that the points must be given in clockwise order.
|
|
pub fn (ctx &Context) draw_convex_poly(points []f32, c gx.Color) {
|
|
assert points.len % 2 == 0
|
|
len := points.len / 2
|
|
assert len >= 3
|
|
|
|
if c.a != 255 {
|
|
sgl.load_pipeline(ctx.timage_pip)
|
|
}
|
|
sgl.c4b(c.r, c.g, c.b, c.a)
|
|
|
|
sgl.begin_triangle_strip()
|
|
x0 := points[0]
|
|
y0 := points[1]
|
|
for i in 1 .. (len / 2 + 1) {
|
|
sgl.v2f(x0, y0)
|
|
sgl.v2f(points[i * 4 - 2], points[i * 4 - 1])
|
|
sgl.v2f(points[i * 4], points[i * 4 + 1])
|
|
}
|
|
|
|
if len % 2 == 0 {
|
|
sgl.v2f(points[2 * len - 2], points[2 * len - 1])
|
|
}
|
|
sgl.end()
|
|
}
|
|
|
|
// draw_empty_poly - draws the borders of a polygon, given an array of points, and a color.
|
|
// Note that the points must be given in clockwise order.
|
|
pub fn (ctx &Context) draw_empty_poly(points []f32, c gx.Color) {
|
|
assert points.len % 2 == 0
|
|
len := points.len / 2
|
|
assert len >= 3
|
|
|
|
if c.a != 255 {
|
|
sgl.load_pipeline(ctx.timage_pip)
|
|
}
|
|
sgl.c4b(c.r, c.g, c.b, c.a)
|
|
|
|
sgl.begin_line_strip()
|
|
for i in 0 .. len {
|
|
sgl.v2f(points[2 * i], points[2 * i + 1])
|
|
}
|
|
sgl.v2f(points[0], points[1])
|
|
sgl.end()
|
|
}
|
|
|
|
pub fn screen_size() Size {
|
|
$if macos {
|
|
return C.gg_get_screen_size()
|
|
}
|
|
// TODO windows, linux, etc
|
|
return Size{}
|
|
}
|
|
|
|
// window_size returns the `Size` of the active window
|
|
pub fn window_size() Size {
|
|
s := dpi_scale()
|
|
return Size{int(sapp.width() / s), int(sapp.height() / s)}
|
|
}
|
|
|
|
// window_size_real_pixels returns the `Size` of the active window without scale
|
|
pub fn window_size_real_pixels() Size {
|
|
return Size{sapp.width(), sapp.height()}
|
|
}
|
|
|
|
pub fn dpi_scale() f32 {
|
|
mut s := sapp.dpi_scale()
|
|
$if android {
|
|
s *= android_dpi_scale()
|
|
}
|
|
// NB: on older X11, `Xft.dpi` from ~/.Xresources, that sokol uses,
|
|
// may not be set which leads to sapp.dpi_scale reporting incorrectly 0.0
|
|
if s < 0.1 {
|
|
s = 1.
|
|
}
|
|
return s
|
|
}
|
|
|
|
pub fn high_dpi() bool {
|
|
return C.sapp_high_dpi()
|
|
}
|
|
|
|
fn C.WaitMessage()
|
|
|
|
/*
|
|
pub fn wait_events() {
|
|
unsafe {
|
|
$if macos {
|
|
#NSEvent *event = [NSApp nextEventMatchingMask:NSEventMaskAny
|
|
#untilDate:[NSDate distantFuture]
|
|
#inMode:NSDefaultRunLoopMode
|
|
#dequeue:YES];
|
|
#[NSApp sendEvent:event];
|
|
}
|
|
$if windows {
|
|
C.WaitMessage()
|
|
}
|
|
}
|
|
}
|
|
*/
|