Adds most of the toolsHEADmaster

1 files changed, 432 insertions, 0 deletions

diff --git a/v_windows/v/examples/sokol/01_cubes/cube.v b/v_windows/v/examples/sokol/01_cubes/cube.v
new file mode 100644
index 0000000..c933dbf
--- /dev/null
+++ b/v_windows/v/examples/sokol/01_cubes/cube.v
@@ -0,0 +1,432 @@
+/**********************************************************************
+*
+* Sokol 3d cube demo
+*
+* Copyright (c) 2021 Dario Deledda. All rights reserved.
+* Use of this source code is governed by an MIT license
+* that can be found in the LICENSE file.
+*
+* TODO:
+* - add instancing
+* - add an exampel with shaders
+**********************************************************************/
+import gg
+import gx
+import math
+import sokol.sapp
+import sokol.gfx
+import sokol.sgl
+
+const (
+	win_width  = 800
+	win_height = 800
+	bg_color   = gx.white
+)
+
+struct App {
+mut:
+	gg          &gg.Context
+	pip_3d      C.sgl_pipeline
+	texture     C.sg_image
+	init_flag   bool
+	frame_count int
+	mouse_x     int = -1
+	mouse_y     int = -1
+}
+
+/******************************************************************************
+*
+* Texture functions
+*
+******************************************************************************/
+fn create_texture(w int, h int, buf &u8) C.sg_image {
+	sz := w * h * 4
+	mut img_desc := C.sg_image_desc{
+		width: w
+		height: h
+		num_mipmaps: 0
+		min_filter: .linear
+		mag_filter: .linear
+		// usage: .dynamic
+		wrap_u: .clamp_to_edge
+		wrap_v: .clamp_to_edge
+		label: &byte(0)
+		d3d11_texture: 0
+	}
+	// commen if .dynamic is enabled
+	img_desc.data.subimage[0][0] = C.sg_range{
+		ptr: buf
+		size: size_t(sz)
+	}
+
+	sg_img := C.sg_make_image(&img_desc)
+	return sg_img
+}
+
+fn destroy_texture(sg_img C.sg_image) {
+	C.sg_destroy_image(sg_img)
+}
+
+// Use only if usage: .dynamic is enabled
+fn update_text_texture(sg_img C.sg_image, w int, h int, buf &byte) {
+	sz := w * h * 4
+	mut tmp_sbc := C.sg_image_data{}
+	tmp_sbc.subimage[0][0] = C.sg_range{
+		ptr: buf
+		size: size_t(sz)
+	}
+	C.sg_update_image(sg_img, &tmp_sbc)
+}
+
+/******************************************************************************
+*
+* Draw functions
+*
+******************************************************************************/
+fn draw_triangle() {
+	sgl.defaults()
+	sgl.begin_triangles()
+	sgl.v2f_c3b(0.0, 0.5, 255, 0, 0)
+	sgl.v2f_c3b(-0.5, -0.5, 0, 0, 255)
+	sgl.v2f_c3b(0.5, -0.5, 0, 255, 0)
+	sgl.end()
+}
+
+// vertex specification for a cube with colored sides and texture coords
+fn cube() {
+	sgl.begin_quads()
+	// edge color
+	sgl.c3f(1.0, 0.0, 0.0)
+	// edge coord
+	// x,y,z, texture cord: u,v
+	sgl.v3f_t2f(-1.0, 1.0, -1.0, -1.0, 1.0)
+	sgl.v3f_t2f(1.0, 1.0, -1.0, 1.0, 1.0)
+	sgl.v3f_t2f(1.0, -1.0, -1.0, 1.0, -1.0)
+	sgl.v3f_t2f(-1.0, -1.0, -1.0, -1.0, -1.0)
+	sgl.c3f(0.0, 1.0, 0.0)
+	sgl.v3f_t2f(-1.0, -1.0, 1.0, -1.0, 1.0)
+	sgl.v3f_t2f(1.0, -1.0, 1.0, 1.0, 1.0)
+	sgl.v3f_t2f(1.0, 1.0, 1.0, 1.0, -1.0)
+	sgl.v3f_t2f(-1.0, 1.0, 1.0, -1.0, -1.0)
+	sgl.c3f(0.0, 0.0, 1.0)
+	sgl.v3f_t2f(-1.0, -1.0, 1.0, -1.0, 1.0)
+	sgl.v3f_t2f(-1.0, 1.0, 1.0, 1.0, 1.0)
+	sgl.v3f_t2f(-1.0, 1.0, -1.0, 1.0, -1.0)
+	sgl.v3f_t2f(-1.0, -1.0, -1.0, -1.0, -1.0)
+	sgl.c3f(1.0, 0.5, 0.0)
+	sgl.v3f_t2f(1.0, -1.0, 1.0, -1.0, 1.0)
+	sgl.v3f_t2f(1.0, -1.0, -1.0, 1.0, 1.0)
+	sgl.v3f_t2f(1.0, 1.0, -1.0, 1.0, -1.0)
+	sgl.v3f_t2f(1.0, 1.0, 1.0, -1.0, -1.0)
+	sgl.c3f(0.0, 0.5, 1.0)
+	sgl.v3f_t2f(1.0, -1.0, -1.0, -1.0, 1.0)
+	sgl.v3f_t2f(1.0, -1.0, 1.0, 1.0, 1.0)
+	sgl.v3f_t2f(-1.0, -1.0, 1.0, 1.0, -1.0)
+	sgl.v3f_t2f(-1.0, -1.0, -1.0, -1.0, -1.0)
+	sgl.c3f(1.0, 0.0, 0.5)
+	sgl.v3f_t2f(-1.0, 1.0, -1.0, -1.0, 1.0)
+	sgl.v3f_t2f(-1.0, 1.0, 1.0, 1.0, 1.0)
+	sgl.v3f_t2f(1.0, 1.0, 1.0, 1.0, -1.0)
+	sgl.v3f_t2f(1.0, 1.0, -1.0, -1.0, -1.0)
+	sgl.end()
+}
+
+fn draw_cubes(app App) {
+	rot := [f32(1.0) * (app.frame_count % 360), 0.5 * f32(app.frame_count % 360)]
+	// rot := [f32(app.mouse_x), f32(app.mouse_y)]
+
+	sgl.defaults()
+	sgl.load_pipeline(app.pip_3d)
+
+	sgl.matrix_mode_projection()
+	sgl.perspective(sgl.rad(45.0), 1.0, 0.1, 100.0)
+
+	sgl.matrix_mode_modelview()
+	sgl.translate(0.0, 0.0, -12.0)
+	sgl.rotate(sgl.rad(rot[0]), 1.0, 0.0, 0.0)
+	sgl.rotate(sgl.rad(rot[1]), 0.0, 1.0, 0.0)
+	cube()
+	sgl.push_matrix()
+	sgl.translate(0.0, 0.0, 3.0)
+	sgl.scale(0.5, 0.5, 0.5)
+	sgl.rotate(-2.0 * sgl.rad(rot[0]), 1.0, 0.0, 0.0)
+	sgl.rotate(-2.0 * sgl.rad(rot[1]), 0.0, 1.0, 0.0)
+	cube()
+	sgl.push_matrix()
+	sgl.translate(0.0, 0.0, 3.0)
+	sgl.scale(0.5, 0.5, 0.5)
+	sgl.rotate(-3.0 * sgl.rad(2 * rot[0]), 1.0, 0.0, 0.0)
+	sgl.rotate(3.0 * sgl.rad(2 * rot[1]), 0.0, 0.0, 1.0)
+	cube()
+	sgl.pop_matrix()
+	sgl.pop_matrix()
+}
+
+fn cube_t(r f32, g f32, b f32) {
+	sgl.begin_quads()
+	// edge color
+	sgl.c3f(r, g, b)
+	// edge coord
+	// x,y,z, texture cord: u,v
+	sgl.v3f_t2f(-1.0, 1.0, -1.0, 0.0, 0.25)
+	sgl.v3f_t2f(1.0, 1.0, -1.0, 0.25, 0.25)
+	sgl.v3f_t2f(1.0, -1.0, -1.0, 0.25, 0.0)
+	sgl.v3f_t2f(-1.0, -1.0, -1.0, 0.0, 0.0)
+	sgl.c3f(r, g, b)
+	sgl.v3f_t2f(-1.0, -1.0, 1.0, 0.0, 0.25)
+	sgl.v3f_t2f(1.0, -1.0, 1.0, 0.25, 0.25)
+	sgl.v3f_t2f(1.0, 1.0, 1.0, 0.25, 0.0)
+	sgl.v3f_t2f(-1.0, 1.0, 1.0, 0.0, 0.0)
+	sgl.c3f(r, g, b)
+	sgl.v3f_t2f(-1.0, -1.0, 1.0, 0.0, 0.25)
+	sgl.v3f_t2f(-1.0, 1.0, 1.0, 0.25, 0.25)
+	sgl.v3f_t2f(-1.0, 1.0, -1.0, 0.25, 0.0)
+	sgl.v3f_t2f(-1.0, -1.0, -1.0, 0.0, 0.0)
+	sgl.c3f(r, g, b)
+	sgl.v3f_t2f(1.0, -1.0, 1.0, 0.0, 0.25)
+	sgl.v3f_t2f(1.0, -1.0, -1.0, 0.25, 0.25)
+	sgl.v3f_t2f(1.0, 1.0, -1.0, 0.25, 0.0)
+	sgl.v3f_t2f(1.0, 1.0, 1.0, 0.0, 0.0)
+	sgl.c3f(r, g, b)
+	sgl.v3f_t2f(1.0, -1.0, -1.0, 0.0, 0.25)
+	sgl.v3f_t2f(1.0, -1.0, 1.0, 0.25, 0.25)
+	sgl.v3f_t2f(-1.0, -1.0, 1.0, 0.25, 0.0)
+	sgl.v3f_t2f(-1.0, -1.0, -1.0, 0.0, 0.0)
+	sgl.c3f(r, g, b)
+	sgl.v3f_t2f(-1.0, 1.0, -1.0, 0.0, 0.25)
+	sgl.v3f_t2f(-1.0, 1.0, 1.0, 0.25, 0.25)
+	sgl.v3f_t2f(1.0, 1.0, 1.0, 0.25, 0.0)
+	sgl.v3f_t2f(1.0, 1.0, -1.0, 0.0, 0.0)
+	sgl.end()
+}
+
+fn draw_texture_cubes(app App) {
+	rot := [f32(app.mouse_x), f32(app.mouse_y)]
+	sgl.defaults()
+	sgl.load_pipeline(app.pip_3d)
+
+	sgl.enable_texture()
+	sgl.texture(app.texture)
+
+	sgl.matrix_mode_projection()
+	sgl.perspective(sgl.rad(45.0), 1.0, 0.1, 100.0)
+
+	sgl.matrix_mode_modelview()
+	sgl.translate(0.0, 0.0, -12.0)
+	sgl.rotate(sgl.rad(rot[0]), 1.0, 0.0, 0.0)
+	sgl.rotate(sgl.rad(rot[1]), 0.0, 1.0, 0.0)
+	cube_t(1, 1, 1)
+	sgl.push_matrix()
+	sgl.translate(0.0, 0.0, 3.0)
+	sgl.scale(0.5, 0.5, 0.5)
+	sgl.rotate(-2.0 * sgl.rad(rot[0]), 1.0, 0.0, 0.0)
+	sgl.rotate(-2.0 * sgl.rad(rot[1]), 0.0, 1.0, 0.0)
+	cube_t(1, 1, 1)
+	sgl.push_matrix()
+	sgl.translate(0.0, 0.0, 3.0)
+	sgl.scale(0.5, 0.5, 0.5)
+	sgl.rotate(-3.0 * sgl.rad(2 * rot[0]), 1.0, 0.0, 0.0)
+	sgl.rotate(3.0 * sgl.rad(2 * rot[1]), 0.0, 0.0, 1.0)
+	cube_t(1, 1, 1)
+	sgl.pop_matrix()
+	sgl.pop_matrix()
+
+	sgl.disable_texture()
+}
+
+fn cube_field(app App) {
+	rot := [f32(app.mouse_x), f32(app.mouse_y)]
+	xyz_sz := f32(2.0)
+	field_size := 20
+
+	sgl.defaults()
+	sgl.load_pipeline(app.pip_3d)
+
+	sgl.enable_texture()
+	sgl.texture(app.texture)
+
+	sgl.matrix_mode_projection()
+	sgl.perspective(sgl.rad(45.0), 1.0, 0.1, 200.0)
+
+	sgl.matrix_mode_modelview()
+
+	sgl.translate(field_size, 0.0, -120.0)
+	sgl.rotate(sgl.rad(rot[0]), 0.0, 1.0, 0.0)
+	sgl.rotate(sgl.rad(rot[1]), 1.0, 0.0, 0.0)
+
+	// draw field_size*field_size cubes
+	for y in 0 .. field_size {
+		for x in 0 .. field_size {
+			sgl.push_matrix()
+			z := f32(math.cos(f32(x * 2) / field_size) * math.sin(f32(y * 2) / field_size) * xyz_sz) * (xyz_sz * 5)
+			sgl.translate(x * xyz_sz, z, y * xyz_sz)
+			cube_t(f32(f32(x) / field_size), f32(f32(y) / field_size), 1)
+			sgl.pop_matrix()
+		}
+	}
+	sgl.disable_texture()
+}
+
+fn frame(mut app App) {
+	ws := gg.window_size_real_pixels()
+	ratio := f32(ws.width) / ws.height
+	dw := ws.width
+	dh := ws.height
+	ww := int(dh / 3) // not a bug
+	hh := int(dh / 3)
+	x0 := int(f32(dw) * 0.05)
+	// x1 := dw/2
+	y0 := 0
+	y1 := int(f32(dh) * 0.5)
+
+	app.gg.begin()
+	// sgl.defaults()
+
+	// 2d triangle
+	sgl.viewport(x0, y0, ww, hh, true)
+	draw_triangle()
+
+	// colored cubes with viewport
+	sgl.viewport(x0, y1, ww, hh, true)
+	draw_cubes(app)
+
+	// textured cubed with viewport
+	sgl.viewport(0, int(dh / 5), dw, int(dh * ratio), true)
+	draw_texture_cubes(app)
+
+	// textured field of cubes with viewport
+	sgl.viewport(0, int(dh / 5), dw, int(dh * ratio), true)
+	cube_field(app)
+
+	app.frame_count++
+
+	app.gg.end()
+}
+
+/******************************************************************************
+*
+* Init / Cleanup
+*
+******************************************************************************/
+fn my_init(mut app App) {
+	app.init_flag = true
+
+	// set max vertices,
+	// for a large number of the same type of object it is better use the instances!!
+	desc := sapp.create_desc()
+	gfx.setup(&desc)
+	sgl_desc := C.sgl_desc_t{
+		max_vertices: 50 * 65536
+	}
+	sgl.setup(&sgl_desc)
+
+	// 3d pipeline
+	mut pipdesc := C.sg_pipeline_desc{}
+	unsafe { C.memset(&pipdesc, 0, sizeof(pipdesc)) }
+
+	color_state := C.sg_color_state{
+		blend: C.sg_blend_state{
+			enabled: true
+			src_factor_rgb: gfx.BlendFactor(C.SG_BLENDFACTOR_SRC_ALPHA)
+			dst_factor_rgb: gfx.BlendFactor(C.SG_BLENDFACTOR_ONE_MINUS_SRC_ALPHA)
+		}
+	}
+	pipdesc.colors[0] = color_state
+
+	pipdesc.depth = C.sg_depth_state{
+		write_enabled: true
+		compare: gfx.CompareFunc(C.SG_COMPAREFUNC_LESS_EQUAL)
+	}
+	pipdesc.cull_mode = .back
+	app.pip_3d = sgl.make_pipeline(&pipdesc)
+
+	// create chessboard texture 256*256 RGBA
+	w := 256
+	h := 256
+	sz := w * h * 4
+	tmp_txt := unsafe { malloc(sz) }
+	mut i := 0
+	for i < sz {
+		unsafe {
+			y := (i >> 0x8) >> 5 // 8 cell
+			x := (i & 0xFF) >> 5 // 8 cell
+			// upper left corner
+			if x == 0 && y == 0 {
+				tmp_txt[i] = byte(0xFF)
+				tmp_txt[i + 1] = byte(0)
+				tmp_txt[i + 2] = byte(0)
+				tmp_txt[i + 3] = byte(0xFF)
+			}
+			// low right corner
+			else if x == 7 && y == 7 {
+				tmp_txt[i] = byte(0)
+				tmp_txt[i + 1] = byte(0xFF)
+				tmp_txt[i + 2] = byte(0)
+				tmp_txt[i + 3] = byte(0xFF)
+			} else {
+				col := if ((x + y) & 1) == 1 { 0xFF } else { 0 }
+				tmp_txt[i] = byte(col) // red
+				tmp_txt[i + 1] = byte(col) // green
+				tmp_txt[i + 2] = byte(col) // blue
+				tmp_txt[i + 3] = byte(0xFF) // alpha
+			}
+			i += 4
+		}
+	}
+	unsafe {
+		app.texture = create_texture(w, h, tmp_txt)
+		free(tmp_txt)
+	}
+}
+
+fn cleanup(mut app App) {
+	gfx.shutdown()
+}
+
+/******************************************************************************
+*
+* event
+*
+******************************************************************************/
+fn my_event_manager(mut ev gg.Event, mut app App) {
+	if ev.typ == .mouse_move {
+		app.mouse_x = int(ev.mouse_x)
+		app.mouse_y = int(ev.mouse_y)
+	}
+	if ev.typ == .touches_began || ev.typ == .touches_moved {
+		if ev.num_touches > 0 {
+			touch_point := ev.touches[0]
+			app.mouse_x = int(touch_point.pos_x)
+			app.mouse_y = int(touch_point.pos_y)
+		}
+	}
+}
+
+/******************************************************************************
+*
+* Main
+*
+******************************************************************************/
+// is needed for easier diagnostics on windows
+[console]
+fn main() {
+	// App init
+	mut app := &App{
+		gg: 0
+	}
+
+	app.gg = gg.new_context(
+		width: win_width
+		height: win_height
+		create_window: true
+		window_title: '3D Cube Demo'
+		user_data: app
+		bg_color: bg_color
+		frame_fn: frame
+		init_fn: my_init
+		cleanup_fn: cleanup
+		event_fn: my_event_manager
+	)
+
+	app.gg.run()
+}