raylib/ports/shapes/shapes_basic_shapes

Source

shapes_basic_shapes.odin ¶

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1package raylib_examples
2
3/*******************************************************************************************
4*
5*   raylib [shapes] example - Draw basic shapes 2d (rectangle, circle, line...)
6*
7*   This example was originally created in C with raylib 1.0, and updated with raylib 4.2
8*   before being translated to Odin.
9*
10*   The original example in C can be found on raylib.com at:
11*
12*   https://www.raylib.com/examples/shapes/loader.html?name=shapes_basic_shapes
13*
14*   raylib is licensed under an unmodified zlib/libpng license, which is an OSI-certified,
15*   BSD-like license that allows static linking with closed source software. The license
16*   can be found in its entirety as part of the standard Odin distribution at:
17*
18*   /vendor/raylib/LICENSE
19*
20*   or online at:
21*
22*   https://www.raylib.com/license.html
23*
24*   This example is licensed under an unmodified zlib/libpng license, which is an
25*   OSI-certified, BSD-like license that allows static linking with closed source software.
26*
27*   Copyright (c) 2014-2023 Ramon Santamaria (@raysan5)
28*   Copyright (c) 2023 Benjamin G. Thompson (@bg-thompson)
29*
30********************************************************************************************/
31
32import rl "vendor:raylib"
33
34SCREEN_WIDTH  :: 800
35SCREEN_HEIGHT :: 450
36
37main :: proc() {
38	rl.InitWindow(SCREEN_WIDTH, SCREEN_HEIGHT, "raylib [shapes] example - basic shapes drawing")
39	defer rl.CloseWindow() // Close window and OpenGL context when leaving main.
40
41	rotation: f32 = 0
42	rl.SetTargetFPS(60) // Set frames per second.
43
44	// The primary loop.
45	for !rl.WindowShouldClose() { // Detect window close button or ESC key press.
46		rotation += 0.2
47
48		// Start drawing.
49		rl.BeginDrawing()
50
51		// Draw background and text.
52		rl.ClearBackground(rl.RAYWHITE)
53		rl.DrawText("some basic shapes available on raylib", 20, 20, 20, rl.DARKGRAY)
54
55		// Draw circle shapes and lines.
56		rl.DrawCircle(SCREEN_WIDTH / 5, 120, 35, rl.DARKBLUE)
57		rl.DrawCircleGradient({SCREEN_WIDTH / 5, 220}, 60, rl.GREEN, rl.SKYBLUE)
58		rl.DrawCircleLines(SCREEN_WIDTH / 5, 340, 80, rl.DARKBLUE)
59
60		// Draw rectangle shapes and lines.
61		rl.DrawRectangle(SCREEN_WIDTH / 4 * 2 - 60, 100, 120, 60, rl.RED)
62		rl.DrawRectangleGradientH(SCREEN_WIDTH /4 * 2 - 90, 170, 180, 130, rl.MAROON, rl.GOLD)
63		rl.DrawRectangleLines(SCREEN_WIDTH / 4 * 2 - 40, 320, 80, 60, rl.ORANGE) // NOTE: Uses QUADS internally, not lines.
64
65		// Draw triangle shapes and lines.
66		rl.DrawTriangle({SCREEN_WIDTH / 4 * 3, 80},
67			{SCREEN_WIDTH / 4 * 3 - 60, 150},
68			{SCREEN_WIDTH / 4 * 3 + 60, 150},
69			rl.VIOLET)
70
71		rl.DrawTriangleLines({SCREEN_WIDTH / 4 * 3, 160},
72			{SCREEN_WIDTH / 4 * 3 - 20, 230},
73			{SCREEN_WIDTH / 4 * 3 + 20, 230},
74			rl.DARKBLUE)
75
76		// Draw polygon shapes and lines.
77		rl.DrawPoly({ SCREEN_WIDTH / 4 * 3, 330}, 6, 80, rotation, rl.BROWN)
78		rl.DrawPolyLines({SCREEN_WIDTH / 4 * 3, 330}, 6, 90, rotation, rl.BROWN)
79		rl.DrawPolyLinesEx({SCREEN_WIDTH / 4 * 3, 330}, 6, 85, rotation, 6, rl.BEIGE)
80
81		// NOTE: We draw all LINES based shapes together to optimize internal drawing,
82		// this way, all LINES are rendered in a single draw pass.
83		rl.DrawLine(18, 42, SCREEN_WIDTH - 18, 42, rl.BLACK)
84		rl.EndDrawing()
85	}
86}