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85 řádky
3.5 KiB
85 řádky
3.5 KiB
/*******************************************************************************************
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*
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* raylib [shapes] example - Cubic-bezier lines
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*
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* Example originally created with raylib 1.7, last time updated with raylib 1.7
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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) 2017-2024 Ramon Santamaria (@raysan5)
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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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SetConfigFlags(FLAG_MSAA_4X_HINT);
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InitWindow(screenWidth, screenHeight, "raylib [shapes] example - cubic-bezier lines");
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Vector2 startPoint = { 30, 30 };
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Vector2 endPoint = { (float)screenWidth - 30, (float)screenHeight - 30 };
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bool moveStartPoint = false;
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bool moveEndPoint = false;
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SetTargetFPS(60); // Set our game to run at 60 frames-per-second
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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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// Update
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//----------------------------------------------------------------------------------
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Vector2 mouse = GetMousePosition();
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if (CheckCollisionPointCircle(mouse, startPoint, 10.0f) && IsMouseButtonDown(MOUSE_BUTTON_LEFT)) moveStartPoint = true;
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else if (CheckCollisionPointCircle(mouse, endPoint, 10.0f) && IsMouseButtonDown(MOUSE_BUTTON_LEFT)) moveEndPoint = true;
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if (moveStartPoint)
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{
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startPoint = mouse;
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if (IsMouseButtonReleased(MOUSE_BUTTON_LEFT)) moveStartPoint = false;
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}
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if (moveEndPoint)
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{
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endPoint = mouse;
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if (IsMouseButtonReleased(MOUSE_BUTTON_LEFT)) moveEndPoint = false;
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}
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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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DrawText("MOVE START-END POINTS WITH MOUSE", 15, 20, 20, GRAY);
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// Draw line Cubic Bezier, in-out interpolation (easing), no control points
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DrawLineBezier(startPoint, endPoint, 4.0f, BLUE);
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// Draw start-end spline circles with some details
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DrawCircleV(startPoint, CheckCollisionPointCircle(mouse, startPoint, 10.0f)? 14.0f : 8.0f, moveStartPoint? RED : BLUE);
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DrawCircleV(endPoint, CheckCollisionPointCircle(mouse, endPoint, 10.0f)? 14.0f : 8.0f, moveEndPoint? RED : BLUE);
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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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