raylib/examples/shapes/shapes_draw_circle_sector.c

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/*******************************************************************************************
*
* raylib [shapes] example - draw circle sector (with gui options)
*
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* Example originally created with raylib 2.5, last time updated with raylib 2.5
*
* Example contributed by Vlad Adrian (@demizdor) and reviewed by Ramon Santamaria (@raysan5)
*
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* Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
* BSD-like license that allows static linking with closed source software
*
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* Copyright (c) 2018-2023 Vlad Adrian (@demizdor) and Ramon Santamaria (@raysan5)
*
********************************************************************************************/
#include <raylib.h>
#define RAYGUI_IMPLEMENTATION
#include "raygui.h" // Required for GUI controls
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//------------------------------------------------------------------------------------
// Program main entry point
//------------------------------------------------------------------------------------
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int main(void)
{
// Initialization
//--------------------------------------------------------------------------------------
const int screenWidth = 800;
const int screenHeight = 450;
InitWindow(screenWidth, screenHeight, "raylib [shapes] example - draw circle sector");
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Vector2 center = {(GetScreenWidth() - 300)/2.0f, GetScreenHeight()/2.0f };
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float outerRadius = 180.0f;
float startAngle = 0.0f;
float endAngle = 180.0f;
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float segments = 10.0f;
float minSegments = 4;
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SetTargetFPS(60); // Set our game to run at 60 frames-per-second
//--------------------------------------------------------------------------------------
// Main game loop
while (!WindowShouldClose()) // Detect window close button or ESC key
{
// Update
//----------------------------------------------------------------------------------
// NOTE: All variables update happens inside GUI control functions
//----------------------------------------------------------------------------------
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// Draw
//----------------------------------------------------------------------------------
BeginDrawing();
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ClearBackground(RAYWHITE);
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DrawLine(500, 0, 500, GetScreenHeight(), Fade(LIGHTGRAY, 0.6f));
DrawRectangle(500, 0, GetScreenWidth() - 500, GetScreenHeight(), Fade(LIGHTGRAY, 0.3f));
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DrawCircleSector(center, outerRadius, startAngle, endAngle, (int)segments, Fade(MAROON, 0.3f));
DrawCircleSectorLines(center, outerRadius, startAngle, endAngle, (int)segments, Fade(MAROON, 0.6f));
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// Draw GUI controls
//------------------------------------------------------------------------------
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GuiSliderBar((Rectangle){ 600, 40, 120, 20}, "StartAngle", NULL, &startAngle, 0, 720);
GuiSliderBar((Rectangle){ 600, 70, 120, 20}, "EndAngle", NULL, &endAngle, 0, 720);
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GuiSliderBar((Rectangle){ 600, 140, 120, 20}, "Radius", NULL, &outerRadius, 0, 200);
GuiSliderBar((Rectangle){ 600, 170, 120, 20}, "Segments", NULL, &segments, 0, 100);
//------------------------------------------------------------------------------
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minSegments = (int)ceilf((endAngle - startAngle) / 90);
DrawText(TextFormat("MODE: %s", (segments >= minSegments)? "MANUAL" : "AUTO"), 600, 200, 10, (segments >= minSegments)? MAROON : DARKGRAY);
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DrawFPS(10, 10);
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EndDrawing();
//----------------------------------------------------------------------------------
}
// De-Initialization
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//--------------------------------------------------------------------------------------
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;
}