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/*******************************************************************************************
*
* raylib [shapes] example - draw ring (with gui options)
*
* This example has been created using raylib 2.6 (www.raylib.com)
* raylib is licensed under an unmodified zlib/libpng license (View raylib.h for details)
*
* Example contributed by Vlad Adrian (@demizdor) and reviewed by Ramon Santamaria (@raysan5)
*
* Copyright (c) 2018-2020 Vlad Adrian (@demizdor) and Ramon Santamaria (@raysan5)
*
********************************************************************************************/
#include <raylib.h>
#define RAYGUI_IMPLEMENTATION
#define RAYGUI_SUPPORT_ICONS
#include "raygui.h" // Required for GUI controls
#if defined(PLATFORM_WEB)
#include <emscripten/emscripten.h>
#endif
//----------------------------------------------------------------------------------
// Global Variables Definition
//----------------------------------------------------------------------------------
const int screenWidth = 800;
const int screenHeight = 450;
// NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
Vector2 center = { 0.0f };
float innerRadius = 80.0f;
float outerRadius = 190.0f;
int startAngle = 0;
int endAngle = 360;
int segments = 0;
bool drawRing = true;
bool drawRingLines = false;
bool drawCircleLines = false;
//----------------------------------------------------------------------------------
// Module Functions Declaration
//----------------------------------------------------------------------------------
void UpdateDrawFrame(void); // Update and Draw one frame
//----------------------------------------------------------------------------------
// Program Main Entry Point
//----------------------------------------------------------------------------------
int main(void)
{
// Initialization
//--------------------------------------------------------------------------------------
InitWindow(screenWidth, screenHeight, "raylib [shapes] example - draw ring");
center = (Vector2){ (GetScreenWidth() - 300)/2, GetScreenHeight()/2 };
#if defined(PLATFORM_WEB)
emscripten_set_main_loop(UpdateDrawFrame, 0, 1);
#else
SetTargetFPS(60); // Set our game to run at 60 frames-per-second
//--------------------------------------------------------------------------------------
// Main game loop
while (!WindowShouldClose()) // Detect window close button or ESC key
{
UpdateDrawFrame();
}
#endif
// De-Initialization
//--------------------------------------------------------------------------------------
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;
}
//----------------------------------------------------------------------------------
// Module Functions Definition
//----------------------------------------------------------------------------------
void UpdateDrawFrame(void)
{
// Update
//----------------------------------------------------------------------------------
// NOTE: All variables update happens inside GUI control functions
//----------------------------------------------------------------------------------
// Draw
//----------------------------------------------------------------------------------
BeginDrawing();
ClearBackground(RAYWHITE);
DrawLine(500, 0, 500, GetScreenHeight(), Fade(LIGHTGRAY, 0.6f));
DrawRectangle(500, 0, GetScreenWidth() - 500, GetScreenHeight(), Fade(LIGHTGRAY, 0.3f));
if (drawRing) DrawRing(center, innerRadius, outerRadius, startAngle, endAngle, segments, Fade(MAROON, 0.3));
if (drawRingLines) DrawRingLines(center, innerRadius, outerRadius, startAngle, endAngle, segments, Fade(BLACK, 0.4));
if (drawCircleLines) DrawCircleSectorLines(center, outerRadius, startAngle, endAngle, segments, Fade(BLACK, 0.4));
// Draw GUI controls
//------------------------------------------------------------------------------
startAngle = GuiSliderBar((Rectangle){ 600, 40, 120, 20 }, "StartAngle", NULL, startAngle, -450, 450);
endAngle = GuiSliderBar((Rectangle){ 600, 70, 120, 20 }, "EndAngle", NULL, endAngle, -450, 450);
innerRadius = GuiSliderBar((Rectangle){ 600, 140, 120, 20 }, "InnerRadius", NULL, innerRadius, 0, 100);
outerRadius = GuiSliderBar((Rectangle){ 600, 170, 120, 20 }, "OuterRadius", NULL, outerRadius, 0, 200);
segments = GuiSliderBar((Rectangle){ 600, 240, 120, 20 }, "Segments", NULL, segments, 0, 100);
drawRing = GuiCheckBox((Rectangle){ 600, 320, 20, 20 }, "Draw Ring", drawRing);
drawRingLines = GuiCheckBox((Rectangle){ 600, 350, 20, 20 }, "Draw RingLines", drawRingLines);
drawCircleLines = GuiCheckBox((Rectangle){ 600, 380, 20, 20 }, "Draw CircleLines", drawCircleLines);
//------------------------------------------------------------------------------
DrawText(FormatText("MODE: %s", (segments >= 4)? "MANUAL" : "AUTO"), 600, 270, 10, (segments >= 4)? MAROON : DARKGRAY);
DrawFPS(10, 10);
EndDrawing();
//----------------------------------------------------------------------------------
}
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