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/*******************************************************************************************
*
* raylib [shapes] example - rectangle scaling by mouse
*
* This example has been created using raylib 2.5 (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 Vlad Adrian (@demizdor) and Ramon Santamaria (@raysan5)
*
********************************************************************************************/
#include "raylib.h"
#if defined(PLATFORM_WEB)
#include <emscripten/emscripten.h>
#endif
#define MOUSE_SCALE_MARK_SIZE 20
//----------------------------------------------------------------------------------
// Global Variables Definition
//----------------------------------------------------------------------------------
const int screenWidth = 800;
const int screenHeight = 450;
// NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
Rectangle rec = { 0.0f };
Vector2 mousePosition = { 0.0f };
bool mouseScaleReady = false;
bool mouseScaleMode = 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 - rectangle scaling mouse");
rec = (Rectangle){ 100, 100, 200, 80 };
#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
//----------------------------------------------------------------------------------
mousePosition = GetMousePosition();
if (CheckCollisionPointRec(mousePosition, rec) &&
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 }))
{
mouseScaleReady = true;
if (IsMouseButtonPressed(MOUSE_LEFT_BUTTON)) mouseScaleMode = true;
}
else mouseScaleReady = false;
if (mouseScaleMode)
{
mouseScaleReady = true;
rec.width = (mousePosition.x - rec.x);
rec.height = (mousePosition.y - rec.y);
if (rec.width < MOUSE_SCALE_MARK_SIZE) rec.width = MOUSE_SCALE_MARK_SIZE;
if (rec.height < MOUSE_SCALE_MARK_SIZE) rec.height = MOUSE_SCALE_MARK_SIZE;
if (IsMouseButtonReleased(MOUSE_LEFT_BUTTON)) mouseScaleMode = false;
}
//----------------------------------------------------------------------------------
// Draw
//----------------------------------------------------------------------------------
BeginDrawing();
ClearBackground(RAYWHITE);
DrawText("Scale rectangle dragging from bottom-right corner!", 10, 10, 20, GRAY);
DrawRectangleRec(rec, Fade(GREEN, 0.5f));
if (mouseScaleReady)
{
DrawRectangleLinesEx(rec, 1, RED);
DrawTriangle((Vector2){ rec.x + rec.width - MOUSE_SCALE_MARK_SIZE, rec.y + rec.height },
(Vector2){ rec.x + rec.width, rec.y + rec.height },
(Vector2){ rec.x + rec.width, rec.y + rec.height - MOUSE_SCALE_MARK_SIZE }, RED);
}
EndDrawing();
//----------------------------------------------------------------------------------
}
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