You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
179 lines
6.9 KiB
179 lines
6.9 KiB
/*******************************************************************************************
|
|
*
|
|
* raylib [textures] example - image processing
|
|
*
|
|
* Example complexity rating: [★★★☆] 3/4
|
|
*
|
|
* NOTE: Images are loaded in CPU memory (RAM); textures are loaded in GPU memory (VRAM)
|
|
*
|
|
* Example originally created with raylib 1.4, last time updated with raylib 3.5
|
|
*
|
|
* 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) 2016-2025 Ramon Santamaria (@raysan5)
|
|
*
|
|
********************************************************************************************/
|
|
|
|
#include "raylib.h"
|
|
|
|
#include <stdlib.h> // Required for: free()
|
|
|
|
#define NUM_PROCESSES 9
|
|
|
|
typedef enum {
|
|
NONE = 0,
|
|
COLOR_GRAYSCALE,
|
|
COLOR_TINT,
|
|
COLOR_INVERT,
|
|
COLOR_CONTRAST,
|
|
COLOR_BRIGHTNESS,
|
|
GAUSSIAN_BLUR,
|
|
FLIP_VERTICAL,
|
|
FLIP_HORIZONTAL
|
|
} ImageProcess;
|
|
|
|
static const char *processText[] = {
|
|
"NO PROCESSING",
|
|
"COLOR GRAYSCALE",
|
|
"COLOR TINT",
|
|
"COLOR INVERT",
|
|
"COLOR CONTRAST",
|
|
"COLOR BRIGHTNESS",
|
|
"GAUSSIAN BLUR",
|
|
"FLIP VERTICAL",
|
|
"FLIP HORIZONTAL"
|
|
};
|
|
|
|
//------------------------------------------------------------------------------------
|
|
// Program main entry point
|
|
//------------------------------------------------------------------------------------
|
|
int main(void)
|
|
{
|
|
// Initialization
|
|
//--------------------------------------------------------------------------------------
|
|
const int screenWidth = 800;
|
|
const int screenHeight = 450;
|
|
|
|
InitWindow(screenWidth, screenHeight, "raylib [textures] example - image processing");
|
|
|
|
// NOTE: Textures MUST be loaded after Window initialization (OpenGL context is required)
|
|
|
|
Image imOrigin = LoadImage("resources/parrots.png"); // Loaded in CPU memory (RAM)
|
|
ImageFormat(&imOrigin, PIXELFORMAT_UNCOMPRESSED_R8G8B8A8); // Format image to RGBA 32bit (required for texture update) <-- ISSUE
|
|
Texture2D texture = LoadTextureFromImage(imOrigin); // Image converted to texture, GPU memory (VRAM)
|
|
|
|
Image imCopy = ImageCopy(imOrigin);
|
|
|
|
int currentProcess = NONE;
|
|
bool textureReload = false;
|
|
|
|
Rectangle toggleRecs[NUM_PROCESSES] = { 0 };
|
|
int mouseHoverRec = -1;
|
|
|
|
for (int i = 0; i < NUM_PROCESSES; i++) toggleRecs[i] = (Rectangle){ 40.0f, (float)(50 + 32*i), 150.0f, 30.0f };
|
|
|
|
SetTargetFPS(60);
|
|
//---------------------------------------------------------------------------------------
|
|
|
|
// Main game loop
|
|
while (!WindowShouldClose()) // Detect window close button or ESC key
|
|
{
|
|
// Update
|
|
//----------------------------------------------------------------------------------
|
|
|
|
// Mouse toggle group logic
|
|
for (int i = 0; i < NUM_PROCESSES; i++)
|
|
{
|
|
if (CheckCollisionPointRec(GetMousePosition(), toggleRecs[i]))
|
|
{
|
|
mouseHoverRec = i;
|
|
|
|
if (IsMouseButtonReleased(MOUSE_BUTTON_LEFT))
|
|
{
|
|
currentProcess = i;
|
|
textureReload = true;
|
|
}
|
|
break;
|
|
}
|
|
else mouseHoverRec = -1;
|
|
}
|
|
|
|
// Keyboard toggle group logic
|
|
if (IsKeyPressed(KEY_DOWN))
|
|
{
|
|
currentProcess++;
|
|
if (currentProcess > (NUM_PROCESSES - 1)) currentProcess = 0;
|
|
textureReload = true;
|
|
}
|
|
else if (IsKeyPressed(KEY_UP))
|
|
{
|
|
currentProcess--;
|
|
if (currentProcess < 0) currentProcess = 7;
|
|
textureReload = true;
|
|
}
|
|
|
|
// Reload texture when required
|
|
if (textureReload)
|
|
{
|
|
UnloadImage(imCopy); // Unload image-copy data
|
|
imCopy = ImageCopy(imOrigin); // Restore image-copy from image-origin
|
|
|
|
// NOTE: Image processing is a costly CPU process to be done every frame,
|
|
// If image processing is required in a frame-basis, it should be done
|
|
// with a texture and by shaders
|
|
switch (currentProcess)
|
|
{
|
|
case COLOR_GRAYSCALE: ImageColorGrayscale(&imCopy); break;
|
|
case COLOR_TINT: ImageColorTint(&imCopy, GREEN); break;
|
|
case COLOR_INVERT: ImageColorInvert(&imCopy); break;
|
|
case COLOR_CONTRAST: ImageColorContrast(&imCopy, -40); break;
|
|
case COLOR_BRIGHTNESS: ImageColorBrightness(&imCopy, -80); break;
|
|
case GAUSSIAN_BLUR: ImageBlurGaussian(&imCopy, 10); break;
|
|
case FLIP_VERTICAL: ImageFlipVertical(&imCopy); break;
|
|
case FLIP_HORIZONTAL: ImageFlipHorizontal(&imCopy); break;
|
|
default: break;
|
|
}
|
|
|
|
Color *pixels = LoadImageColors(imCopy); // Load pixel data from image (RGBA 32bit)
|
|
UpdateTexture(texture, pixels); // Update texture with new image data
|
|
UnloadImageColors(pixels); // Unload pixels data from RAM
|
|
|
|
textureReload = false;
|
|
}
|
|
//----------------------------------------------------------------------------------
|
|
|
|
// Draw
|
|
//----------------------------------------------------------------------------------
|
|
BeginDrawing();
|
|
|
|
ClearBackground(RAYWHITE);
|
|
|
|
DrawText("IMAGE PROCESSING:", 40, 30, 10, DARKGRAY);
|
|
|
|
// Draw rectangles
|
|
for (int i = 0; i < NUM_PROCESSES; i++)
|
|
{
|
|
DrawRectangleRec(toggleRecs[i], ((i == currentProcess) || (i == mouseHoverRec)) ? SKYBLUE : LIGHTGRAY);
|
|
DrawRectangleLines((int)toggleRecs[i].x, (int) toggleRecs[i].y, (int) toggleRecs[i].width, (int) toggleRecs[i].height, ((i == currentProcess) || (i == mouseHoverRec)) ? BLUE : GRAY);
|
|
DrawText( processText[i], (int)( toggleRecs[i].x + toggleRecs[i].width/2 - MeasureText(processText[i], 10)/2), (int) toggleRecs[i].y + 11, 10, ((i == currentProcess) || (i == mouseHoverRec)) ? DARKBLUE : DARKGRAY);
|
|
}
|
|
|
|
DrawTexture(texture, screenWidth - texture.width - 60, screenHeight/2 - texture.height/2, WHITE);
|
|
DrawRectangleLines(screenWidth - texture.width - 60, screenHeight/2 - texture.height/2, texture.width, texture.height, BLACK);
|
|
|
|
EndDrawing();
|
|
//----------------------------------------------------------------------------------
|
|
}
|
|
|
|
// De-Initialization
|
|
//--------------------------------------------------------------------------------------
|
|
UnloadTexture(texture); // Unload texture from VRAM
|
|
UnloadImage(imOrigin); // Unload image-origin from RAM
|
|
UnloadImage(imCopy); // Unload image-copy from RAM
|
|
|
|
CloseWindow(); // Close window and OpenGL context
|
|
//--------------------------------------------------------------------------------------
|
|
|
|
return 0;
|
|
}
|