85 lines
3 KiB
C
85 lines
3 KiB
C
/*******************************************************************************************
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*
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* raylib [shapes] example - pie chart
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*
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* Example complexity rating: [★☆☆☆] 1/4
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*
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* Example originally created with raylib 5.5, last time updated with raylib 5.6
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*
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* Example contributed by Gideon Serfontein (@GideonSerf) and reviewed by Ramon Santamaria (@raysan5)
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*
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* Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
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* BSD-like license that allows static linking with closed source software
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*
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* Copyright (c) 2025 Gideon Serfontein (@GideonSerf)
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*
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********************************************************************************************/
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#include "raylib.h"
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//------------------------------------------------------------------------------------
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// Program main entry point
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//------------------------------------------------------------------------------------
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int main(void)
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{
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// Initialization
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//--------------------------------------------------------------------------------------
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const int screenWidth = 800;
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const int screenHeight = 450;
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InitWindow(screenWidth, screenHeight, "raylib [shapes] example - pie chart");
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// Pie slice angles (must sum to 360)
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const float angles[] = { 30.0f, 10.0f, 45.0f, 35.0f, 60.0f, 38.0f, 75.0f, 67.0f };
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const int anglesCount = (int)(sizeof(angles)/sizeof(angles[0]));
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const float radius = 150.0f;
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const Vector2 center = { screenWidth/2.0f, screenHeight/2.0f };
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// Set our game to run at 60 frames-per-second
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SetTargetFPS(60);
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//--------------------------------------------------------------------------------------
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// Main game loop
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while (!WindowShouldClose()) // Detect window close button or ESC key
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{
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// Draw
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//----------------------------------------------------------------------------------
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BeginDrawing();
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ClearBackground(RAYWHITE);
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float lastAngleDeg = 0.0f;
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// Number of radial segments for sector drawing
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const int segments = 100;
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for (int i = 0; i < anglesCount; i++)
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{
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float hue = (i/(float)anglesCount)*360.0f;
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float sat = 0.75f;
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float val = 0.95f;
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// Convert HSV to RGBA
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Color col = ColorFromHSV(hue, sat, val);
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// Draw pie piece using DrawCircleSector()
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DrawCircleSector(center, radius, lastAngleDeg, lastAngleDeg + angles[i],
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segments, col);
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lastAngleDeg += angles[i];
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}
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DrawText("Pie chart drawing example", 260, 400, 20, LIGHTGRAY);
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EndDrawing();
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//----------------------------------------------------------------------------------
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}
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// De-Initialization
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//--------------------------------------------------------------------------------------
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CloseWindow(); // Close window and OpenGL context
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//--------------------------------------------------------------------------------------
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return 0;
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}
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