243 lines
6.6 KiB
Odin
243 lines
6.6 KiB
Odin
package examples
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import "../../draw"
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import "../../vendor/clay"
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import "core:os"
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import sdl "vendor:sdl3"
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JETBRAINS_MONO_REGULAR_RAW :: #load("fonts/JetBrainsMono-Regular.ttf")
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JETBRAINS_MONO_REGULAR: draw.Font_Id = max(draw.Font_Id) // Max so we crash if registration is forgotten
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hellope_shapes :: proc() {
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if !sdl.Init({.VIDEO}) do os.exit(1)
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window := sdl.CreateWindow("Hellope!", 500, 500, {.HIGH_PIXEL_DENSITY})
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gpu := sdl.CreateGPUDevice({.MSL}, true, nil)
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if !sdl.ClaimWindowForGPUDevice(gpu, window) do os.exit(1)
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if !draw.init(gpu, window) do os.exit(1)
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spin_angle: f32 = 0
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for {
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defer free_all(context.temp_allocator)
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ev: sdl.Event
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for sdl.PollEvent(&ev) {
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if ev.type == .QUIT do return
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}
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spin_angle += 1
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base_layer := draw.begin({w = 500, h = 500})
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// Background
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draw.rectangle(base_layer, {0, 0, 500, 500}, {40, 40, 40, 255})
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// ----- Shapes without rotation (existing demo) -----
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draw.rectangle(base_layer, {20, 20, 200, 120}, {80, 120, 200, 255})
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draw.rectangle_lines(base_layer, {20, 20, 200, 120}, draw.WHITE, thick = 2)
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draw.rectangle(base_layer, {240, 20, 240, 120}, {200, 80, 80, 255}, roundness = 0.3)
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draw.rectangle_gradient(
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base_layer,
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{20, 160, 460, 60},
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{255, 0, 0, 255},
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{0, 255, 0, 255},
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{0, 0, 255, 255},
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{255, 255, 0, 255},
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)
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// ----- Rotation demos -----
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// Rectangle rotating around its center
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rect := draw.Rectangle{100, 320, 80, 50}
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draw.rectangle(
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base_layer,
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rect,
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{100, 200, 100, 255},
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origin = draw.center_of(rect),
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rotation = spin_angle,
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)
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draw.rectangle_lines(
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base_layer,
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rect,
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draw.WHITE,
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thick = 2,
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origin = draw.center_of(rect),
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rotation = spin_angle,
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)
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// Rounded rectangle rotating around its center
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rrect := draw.Rectangle{230, 300, 100, 80}
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draw.rectangle(
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base_layer,
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rrect,
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{200, 100, 200, 255},
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roundness = 0.4,
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origin = draw.center_of(rrect),
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rotation = spin_angle,
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)
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// Ellipse rotating around its center (tilted ellipse)
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draw.ellipse(base_layer, {410, 340}, 50, 30, {255, 200, 50, 255}, rotation = spin_angle)
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// Circle orbiting a point (moon orbiting planet)
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planet_pos := [2]f32{100, 450}
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moon_pos := planet_pos + {0, -40}
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draw.circle(base_layer, planet_pos, 8, {200, 200, 200, 255}) // planet (stationary)
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draw.circle(base_layer, moon_pos, 5, {100, 150, 255, 255}, origin = {0, 40}, rotation = spin_angle) // moon orbiting
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// Ring arc rotating in place
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draw.ring(base_layer, {250, 450}, 15, 30, 0, 270, {100, 100, 220, 255}, rotation = spin_angle)
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// Triangle rotating around its center
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tv1 := [2]f32{350, 420}
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tv2 := [2]f32{420, 480}
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tv3 := [2]f32{340, 480}
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draw.triangle(
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base_layer,
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tv1,
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tv2,
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tv3,
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{220, 180, 60, 255},
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origin = draw.center_of(tv1, tv2, tv3),
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rotation = spin_angle,
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)
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// Polygon rotating around its center (already had rotation; now with origin for orbit)
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draw.poly(base_layer, {460, 450}, 6, 30, {180, 100, 220, 255}, rotation = spin_angle)
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draw.poly_lines(base_layer, {460, 450}, 6, 30, draw.WHITE, rotation = spin_angle, thick = 2)
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draw.end(gpu, window)
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}
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}
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hellope_text :: proc() {
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if !sdl.Init({.VIDEO}) do os.exit(1)
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window := sdl.CreateWindow("Hellope!", 600, 600, {.HIGH_PIXEL_DENSITY})
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gpu := sdl.CreateGPUDevice({.MSL}, true, nil)
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if !sdl.ClaimWindowForGPUDevice(gpu, window) do os.exit(1)
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if !draw.init(gpu, window) do os.exit(1)
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JETBRAINS_MONO_REGULAR = draw.register_font(JETBRAINS_MONO_REGULAR_RAW)
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FONT_SIZE :: u16(24)
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spin_angle: f32 = 0
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for {
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defer free_all(context.temp_allocator)
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ev: sdl.Event
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for sdl.PollEvent(&ev) {
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if ev.type == .QUIT do return
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}
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spin_angle += 0.5
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base_layer := draw.begin({w = 600, h = 600})
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// Grey background
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draw.rectangle(base_layer, {0, 0, 600, 600}, {127, 127, 127, 255})
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// ----- Text API demos -----
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// Cached text with id — TTF_Text reused across frames (good for text-heavy apps)
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draw.text(
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base_layer,
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"Hellope!",
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{300, 80},
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JETBRAINS_MONO_REGULAR,
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FONT_SIZE,
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color = draw.WHITE,
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origin = draw.center_of("Hellope!", JETBRAINS_MONO_REGULAR, FONT_SIZE),
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id = "hellope",
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)
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// Rotating sentence — verifies multi-word text rotation around center
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draw.text(
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base_layer,
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"Hellope World!",
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{300, 250},
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JETBRAINS_MONO_REGULAR,
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FONT_SIZE,
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color = {255, 200, 50, 255},
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origin = draw.center_of("Hellope World!", JETBRAINS_MONO_REGULAR, FONT_SIZE),
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rotation = spin_angle,
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id = "rotating_sentence",
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)
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// Uncached text (no id) — created and destroyed each frame, simplest usage
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draw.text(
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base_layer,
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"Top-left anchored",
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{20, 450},
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JETBRAINS_MONO_REGULAR,
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FONT_SIZE,
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color = draw.WHITE,
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)
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// Measure text for manual layout
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size := draw.measure_text("Measured!", JETBRAINS_MONO_REGULAR, FONT_SIZE)
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draw.rectangle(base_layer, {300 - size.x / 2, 380, size.x, size.y}, {60, 60, 60, 200})
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draw.text(
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base_layer,
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"Measured!",
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{300, 380},
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JETBRAINS_MONO_REGULAR,
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FONT_SIZE,
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color = draw.WHITE,
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origin = draw.top_of("Measured!", JETBRAINS_MONO_REGULAR, FONT_SIZE),
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id = "measured",
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)
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// Rotating text anchored at top-left (no origin offset) — spins around top-left corner
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draw.text(
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base_layer,
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"Corner spin",
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{150, 530},
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JETBRAINS_MONO_REGULAR,
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FONT_SIZE,
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color = {100, 200, 255, 255},
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rotation = spin_angle,
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id = "corner_spin",
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)
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draw.end(gpu, window)
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}
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}
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hellope_clay :: proc() {
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if !sdl.Init({.VIDEO}) do os.exit(1)
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window := sdl.CreateWindow("Hellope!", 500, 500, {.HIGH_PIXEL_DENSITY})
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gpu := sdl.CreateGPUDevice({.MSL}, true, nil)
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if !sdl.ClaimWindowForGPUDevice(gpu, window) do os.exit(1)
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if !draw.init(gpu, window) do os.exit(1)
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JETBRAINS_MONO_REGULAR = draw.register_font(JETBRAINS_MONO_REGULAR_RAW)
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text_config := clay.TextElementConfig {
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fontId = JETBRAINS_MONO_REGULAR,
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fontSize = 24,
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textColor = {255, 255, 255, 255},
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}
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for {
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defer free_all(context.temp_allocator)
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ev: sdl.Event
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for sdl.PollEvent(&ev) {
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if ev.type == .QUIT do return
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}
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base_layer := draw.begin({w = 500, h = 500})
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clay.SetLayoutDimensions({width = base_layer.bounds.w, height = base_layer.bounds.h})
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clay.BeginLayout()
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if clay.UI()(
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{
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id = clay.ID("outer"),
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layout = {
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sizing = {clay.SizingGrow({}), clay.SizingGrow({})},
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childAlignment = {x = .Center, y = .Center},
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},
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backgroundColor = {127, 127, 127, 255},
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},
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) {
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clay.Text("Hellope!", &text_config)
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}
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clay_batch := draw.ClayBatch {
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bounds = base_layer.bounds,
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cmds = clay.EndLayout(),
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}
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draw.prepare_clay_batch(base_layer, &clay_batch, {0, 0})
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draw.end(gpu, window)
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}
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}
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