browser/external/raylib-4.5.0/examples/textures/textures_npatch_drawing.c

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2023-09-27 15:02:24 -04:00
/*******************************************************************************************
*
* raylib [textures] example - N-patch drawing
*
* NOTE: Images are loaded in CPU memory (RAM); textures are loaded in GPU memory (VRAM)
*
* Example originally created with raylib 2.0, last time updated with raylib 2.5
*
* Example contributed by Jorge A. Gomes (@overdev) and reviewed by Ramon Santamaria (@raysan5)
*
* Example licensed under an unmodified zlib/libpng license, which is an OSI-certified,
* BSD-like license that allows static linking with closed source software
*
* Copyright (c) 2018-2023 Jorge A. Gomes (@overdev) and Ramon Santamaria (@raysan5)
*
********************************************************************************************/
#include "raylib.h"
//------------------------------------------------------------------------------------
// Program main entry point
//------------------------------------------------------------------------------------
int main(void)
{
// Initialization
//--------------------------------------------------------------------------------------
const int screenWidth = 800;
const int screenHeight = 450;
InitWindow(screenWidth, screenHeight, "raylib [textures] example - N-patch drawing");
// NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
Texture2D nPatchTexture = LoadTexture("resources/ninepatch_button.png");
Vector2 mousePosition = { 0 };
Vector2 origin = { 0.0f, 0.0f };
// Position and size of the n-patches
Rectangle dstRec1 = { 480.0f, 160.0f, 32.0f, 32.0f };
Rectangle dstRec2 = { 160.0f, 160.0f, 32.0f, 32.0f };
Rectangle dstRecH = { 160.0f, 93.0f, 32.0f, 32.0f };
Rectangle dstRecV = { 92.0f, 160.0f, 32.0f, 32.0f };
// A 9-patch (NPATCH_NINE_PATCH) changes its sizes in both axis
NPatchInfo ninePatchInfo1 = { (Rectangle){ 0.0f, 0.0f, 64.0f, 64.0f }, 12, 40, 12, 12, NPATCH_NINE_PATCH };
NPatchInfo ninePatchInfo2 = { (Rectangle){ 0.0f, 128.0f, 64.0f, 64.0f }, 16, 16, 16, 16, NPATCH_NINE_PATCH };
// A horizontal 3-patch (NPATCH_THREE_PATCH_HORIZONTAL) changes its sizes along the x axis only
NPatchInfo h3PatchInfo = { (Rectangle){ 0.0f, 64.0f, 64.0f, 64.0f }, 8, 8, 8, 8, NPATCH_THREE_PATCH_HORIZONTAL };
// A vertical 3-patch (NPATCH_THREE_PATCH_VERTICAL) changes its sizes along the y axis only
NPatchInfo v3PatchInfo = { (Rectangle){ 0.0f, 192.0f, 64.0f, 64.0f }, 6, 6, 6, 6, NPATCH_THREE_PATCH_VERTICAL };
SetTargetFPS(60);
//---------------------------------------------------------------------------------------
// Main game loop
while (!WindowShouldClose()) // Detect window close button or ESC key
{
// Update
//----------------------------------------------------------------------------------
mousePosition = GetMousePosition();
// Resize the n-patches based on mouse position
dstRec1.width = mousePosition.x - dstRec1.x;
dstRec1.height = mousePosition.y - dstRec1.y;
dstRec2.width = mousePosition.x - dstRec2.x;
dstRec2.height = mousePosition.y - dstRec2.y;
dstRecH.width = mousePosition.x - dstRecH.x;
dstRecV.height = mousePosition.y - dstRecV.y;
// Set a minimum width and/or height
if (dstRec1.width < 1.0f) dstRec1.width = 1.0f;
if (dstRec1.width > 300.0f) dstRec1.width = 300.0f;
if (dstRec1.height < 1.0f) dstRec1.height = 1.0f;
if (dstRec2.width < 1.0f) dstRec2.width = 1.0f;
if (dstRec2.width > 300.0f) dstRec2.width = 300.0f;
if (dstRec2.height < 1.0f) dstRec2.height = 1.0f;
if (dstRecH.width < 1.0f) dstRecH.width = 1.0f;
if (dstRecV.height < 1.0f) dstRecV.height = 1.0f;
//----------------------------------------------------------------------------------
// Draw
//----------------------------------------------------------------------------------
BeginDrawing();
ClearBackground(RAYWHITE);
// Draw the n-patches
DrawTextureNPatch(nPatchTexture, ninePatchInfo2, dstRec2, origin, 0.0f, WHITE);
DrawTextureNPatch(nPatchTexture, ninePatchInfo1, dstRec1, origin, 0.0f, WHITE);
DrawTextureNPatch(nPatchTexture, h3PatchInfo, dstRecH, origin, 0.0f, WHITE);
DrawTextureNPatch(nPatchTexture, v3PatchInfo, dstRecV, origin, 0.0f, WHITE);
// Draw the source texture
DrawRectangleLines(5, 88, 74, 266, BLUE);
DrawTexture(nPatchTexture, 10, 93, WHITE);
DrawText("TEXTURE", 15, 360, 10, DARKGRAY);
DrawText("Move the mouse to stretch or shrink the n-patches", 10, 20, 20, DARKGRAY);
EndDrawing();
//----------------------------------------------------------------------------------
}
// De-Initialization
//--------------------------------------------------------------------------------------
UnloadTexture(nPatchTexture); // Texture unloading
CloseWindow(); // Close window and OpenGL context
//--------------------------------------------------------------------------------------
return 0;
}