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105 行
4.1 KiB
105 行
4.1 KiB
/*******************************************************************************************
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*
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* raylib [shapes] example - rectangle scaling
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*
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* Example complexity rating: [★★☆☆] 2/4
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*
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* Example originally created with raylib 2.5, last time updated with raylib 2.5
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*
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* Example contributed by Vlad Adrian (@demizdor) 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) 2018-2025 Vlad Adrian (@demizdor) and Ramon Santamaria (@raysan5)
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*
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********************************************************************************************/
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#include "raylib.h"
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#define MOUSE_SCALE_MARK_SIZE 12
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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 - rectangle scaling");
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Rectangle rec = { 100, 100, 200, 80 };
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Vector2 mousePosition = { 0 };
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bool mouseScaleReady = false;
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bool mouseScaleMode = 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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mousePosition = GetMousePosition();
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if (CheckCollisionPointRec(mousePosition, (Rectangle){ rec.x + rec.width - MOUSE_SCALE_MARK_SIZE, rec.y + rec.height - MOUSE_SCALE_MARK_SIZE, MOUSE_SCALE_MARK_SIZE, MOUSE_SCALE_MARK_SIZE }))
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{
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mouseScaleReady = true;
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if (IsMouseButtonPressed(MOUSE_BUTTON_LEFT)) mouseScaleMode = true;
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}
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else mouseScaleReady = false;
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if (mouseScaleMode)
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{
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mouseScaleReady = true;
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rec.width = (mousePosition.x - rec.x);
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rec.height = (mousePosition.y - rec.y);
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// Check minimum rec size
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if (rec.width < MOUSE_SCALE_MARK_SIZE) rec.width = MOUSE_SCALE_MARK_SIZE;
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if (rec.height < MOUSE_SCALE_MARK_SIZE) rec.height = MOUSE_SCALE_MARK_SIZE;
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// Check maximum rec size
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if (rec.width > (GetScreenWidth() - rec.x)) rec.width = GetScreenWidth() - rec.x;
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if (rec.height > (GetScreenHeight() - rec.y)) rec.height = GetScreenHeight() - rec.y;
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if (IsMouseButtonReleased(MOUSE_BUTTON_LEFT)) mouseScaleMode = 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("Scale rectangle dragging from bottom-right corner!", 10, 10, 20, GRAY);
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DrawRectangleRec(rec, Fade(GREEN, 0.5f));
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if (mouseScaleReady)
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{
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DrawRectangleLinesEx(rec, 1, RED);
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DrawTriangle((Vector2){ rec.x + rec.width - MOUSE_SCALE_MARK_SIZE, rec.y + rec.height },
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(Vector2){ rec.x + rec.width, rec.y + rec.height },
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(Vector2){ rec.x + rec.width, rec.y + rec.height - MOUSE_SCALE_MARK_SIZE }, RED);
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}
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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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