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Code convention update

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This commit is contained in:
Agnis Aldiņš "NeZvērs 2025-11-02 20:24:59 +02:00
parent 1fcd06b997
commit e7ea7d290d
1 changed files with 187 additions and 157 deletions
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344
examples/core/core_viewport_scaling.c
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@ -17,26 +17,8 @@
#include "raylib.h" #include "raylib.h"
int screenWidth = 800;
int screenHeight = 450;
int gameWidth = 320;
int gameHeight = 180;
RenderTexture2D target;
Rectangle sourceRect;
Rectangle destRect;
// For itteration purposes and teaching example // For itteration purposes and teaching example
#define RESOLUTION_COUNT 4 #define RESOLUTION_COUNT 4
// Preset resolutions that could be created by subdividing screen resolution
Vector2 resolutionList[RESOLUTION_COUNT] = {
(Vector2){64, 64},
(Vector2){256, 240},
(Vector2){320, 180},
// 4K doesn't work with integer scaling but included for example purposes with non-integer scaling
(Vector2){3840, 2160},
};
int resolutionIndex = 2;
enum ViewportType enum ViewportType
{ {
@ -48,78 +30,29 @@ enum ViewportType
KEEP_ASPECT, KEEP_ASPECT,
KEEP_HEIGHT, KEEP_HEIGHT,
KEEP_WIDTH, KEEP_WIDTH,
// For itteration purposes and teaching example // For itteration purposes and as a teaching example
VIEWPORT_TYPE_COUNT, VIEWPORT_TYPE_COUNT,
}; };
// For displaying on GUI
const char *ViewportTypeNames[VIEWPORT_TYPE_COUNT] = {
"KEEP_ASPECT_INTEGER",
"KEEP_HEIGHT_INTEGER",
"KEEP_WIDTH_INTEGER",
"KEEP_ASPECT",
"KEEP_HEIGHT",
"KEEP_WIDTH",
};
enum ViewportType viewportType = KEEP_ASPECT_INTEGER;
// Function declarations (header part), implementation at bottom //--------------------------------------------------------------------------------------
void KeepAspectCenteredInteger(int scr_w, int scr_h, int view_w, int view_h, Rectangle* source_rect, Rectangle* dest_rect); // Module Functions Declaration
void KeepHeightCenteredInteger(int scr_w, int scr_h, int view_w, int view_h, Rectangle* source_rect, Rectangle* dest_rect); //--------------------------------------------------------------------------------------
void KeepWidthCenteredInteger(int scr_w, int scr_h, int view_w, int view_h, Rectangle* source_rect, Rectangle* dest_rect); static void KeepAspectCenteredInteger(int screenWidth, int screenHeight, int gameWidth, int gameHeight, Rectangle *sourceRect, Rectangle *destRect);
void KeepAspectCentered(int scr_w, int scr_h, int view_w, int view_h, Rectangle* source_rect, Rectangle* dest_rect);
void KeepHeightCentered(int scr_w, int scr_h, int view_w, int view_h, Rectangle* source_rect, Rectangle* dest_rect);
void KeepWidthCentered(int scr_w, int scr_h, int view_w, int view_h, Rectangle* source_rect, Rectangle* dest_rect);
void ResizeRenderSize() static void KeepHeightCenteredInteger(int screenWidth, int screenHeight, int gameWidth, int gameHeight, Rectangle *sourceRect, Rectangle *destRect);
{
screenWidth = GetScreenWidth();
screenHeight = GetScreenHeight();
switch(viewportType) static void KeepWidthCenteredInteger(int screenWidth, int screenHeight, int gameWidth, int gameHeight, Rectangle *sourceRect, Rectangle *destRect);
{
case KEEP_ASPECT_INTEGER: static void KeepAspectCentered(int screenWidth, int screenHeight, int gameWidth, int gameHeight, Rectangle *sourceRect, Rectangle *destRect);
{
KeepAspectCenteredInteger(screenWidth, screenHeight, gameWidth, gameHeight, &sourceRect, &destRect); static void KeepHeightCentered(int screenWidth, int screenHeight, int gameWidth, int gameHeight, Rectangle *sourceRect, Rectangle *destRect);
break;
} static void KeepWidthCentered(int screenWidth, int screenHeight, int gameWidth, int gameHeight, Rectangle *sourceRect, Rectangle *destRect);
case KEEP_HEIGHT_INTEGER:
{ static void ResizeRenderSize(enum ViewportType viewportType, int *screenWidth, int *screenHeight, int gameWidth, int gameHeight, Rectangle *sourceRect, Rectangle *destRect, RenderTexture2D *target);
KeepHeightCenteredInteger(screenWidth, screenHeight, gameWidth, gameHeight, &sourceRect, &destRect);
break;
}
case KEEP_WIDTH_INTEGER:
{
KeepWidthCenteredInteger(screenWidth, screenHeight, gameWidth, gameHeight, &sourceRect, &destRect);
break;
}
case KEEP_ASPECT:
{
KeepAspectCentered(screenWidth, screenHeight, gameWidth, gameHeight, &sourceRect, &destRect);
break;
}
case KEEP_HEIGHT:
{
KeepHeightCentered(screenWidth, screenHeight, gameWidth, gameHeight, &sourceRect, &destRect);
break;
}
case KEEP_WIDTH:
{
KeepWidthCentered(screenWidth, screenHeight, gameWidth, gameHeight, &sourceRect, &destRect);
break;
}
default: {}
}
UnloadRenderTexture(target);
target = LoadRenderTexture(sourceRect.width, -sourceRect.height);
}
// Example how to calculate position on RenderTexture // Example how to calculate position on RenderTexture
Vector2 Screen2RenderTexturePosition(Vector2 point, Rectangle* textureRect, Rectangle* scaledRect){ static Vector2 Screen2RenderTexturePosition(Vector2 point, Rectangle *textureRect, Rectangle *scaledRect);
Vector2 relativePosition = {point.x - scaledRect->x, point.y - scaledRect->y};
Vector2 ratio = {textureRect->width / scaledRect->width, -textureRect->height / scaledRect->height};
return (Vector2){relativePosition.x * ratio.x, relativePosition.y * ratio.x};
}
//------------------------------------------------------------------------------------ //------------------------------------------------------------------------------------
// Program main entry point // Program main entry point
@ -128,10 +61,39 @@ int main(void)
{ {
// Initialization // Initialization
//--------------------------------------------------------- //---------------------------------------------------------
// Preset resolutions that could be created by subdividing screen resolution
Vector2 resolutionList[RESOLUTION_COUNT] = {
(Vector2){64, 64},
(Vector2){256, 240},
(Vector2){320, 180},
// 4K doesn't work with integer scaling but included for example purposes with non-integer scaling
(Vector2){3840, 2160},
};
int resolutionIndex = 0;
int screenWidth = 800;
int screenHeight = 450;
int gameWidth = 64;
int gameHeight = 64;
RenderTexture2D target = (RenderTexture2D){0};
Rectangle sourceRect = (Rectangle){0};
Rectangle destRect = (Rectangle){0};
// For displaying on GUI
const char *ViewportTypeNames[VIEWPORT_TYPE_COUNT] = {
"KEEP_ASPECT_INTEGER",
"KEEP_HEIGHT_INTEGER",
"KEEP_WIDTH_INTEGER",
"KEEP_ASPECT",
"KEEP_HEIGHT",
"KEEP_WIDTH",
};
enum ViewportType viewportType = KEEP_ASPECT_INTEGER;
SetConfigFlags(FLAG_WINDOW_RESIZABLE); SetConfigFlags(FLAG_WINDOW_RESIZABLE);
InitWindow(screenWidth, screenHeight, "raylib [core] example - Viewport Scaling"); InitWindow(screenWidth, screenHeight, "raylib [core] example - Viewport Scaling");
ResizeRenderSize(); ResizeRenderSize(viewportType, &screenWidth, &screenHeight, gameWidth, gameHeight, &sourceRect, &destRect, &target);
SetTargetFPS(60); // Set our game to run at 60 frames-per-second SetTargetFPS(60); // Set our game to run at 60 frames-per-second
//---------------------------------------------------------- //----------------------------------------------------------
@ -147,7 +109,7 @@ int main(void)
// Update // Update
//----------------------------------------------------- //-----------------------------------------------------
if (IsWindowResized()){ if (IsWindowResized()){
ResizeRenderSize(); ResizeRenderSize(viewportType, &screenWidth, &screenHeight, gameWidth, gameHeight, &sourceRect, &destRect, &target);
} }
Vector2 mousePosition = GetMousePosition(); Vector2 mousePosition = GetMousePosition();
bool mousePressed = IsMouseButtonPressed(MOUSE_BUTTON_LEFT); bool mousePressed = IsMouseButtonPressed(MOUSE_BUTTON_LEFT);
@ -157,21 +119,21 @@ int main(void)
resolutionIndex = (resolutionIndex + RESOLUTION_COUNT - 1) % RESOLUTION_COUNT; resolutionIndex = (resolutionIndex + RESOLUTION_COUNT - 1) % RESOLUTION_COUNT;
gameWidth = resolutionList[resolutionIndex].x; gameWidth = resolutionList[resolutionIndex].x;
gameHeight = resolutionList[resolutionIndex].y; gameHeight = resolutionList[resolutionIndex].y;
ResizeRenderSize(); ResizeRenderSize(viewportType, &screenWidth, &screenHeight, gameWidth, gameHeight, &sourceRect, &destRect, &target);
} }
if (CheckCollisionPointRec(mousePosition, increaseResolutionButton) && mousePressed){ if (CheckCollisionPointRec(mousePosition, increaseResolutionButton) && mousePressed){
resolutionIndex = (resolutionIndex + 1) % RESOLUTION_COUNT; resolutionIndex = (resolutionIndex + 1) % RESOLUTION_COUNT;
gameWidth = resolutionList[resolutionIndex].x; gameWidth = resolutionList[resolutionIndex].x;
gameHeight = resolutionList[resolutionIndex].y; gameHeight = resolutionList[resolutionIndex].y;
ResizeRenderSize(); ResizeRenderSize(viewportType, &screenWidth, &screenHeight, gameWidth, gameHeight, &sourceRect, &destRect, &target);
} }
if (CheckCollisionPointRec(mousePosition, decreaseTypeButton) && mousePressed){ if (CheckCollisionPointRec(mousePosition, decreaseTypeButton) && mousePressed){
viewportType = (viewportType + VIEWPORT_TYPE_COUNT - 1) % VIEWPORT_TYPE_COUNT; viewportType = (viewportType + VIEWPORT_TYPE_COUNT - 1) % VIEWPORT_TYPE_COUNT;
ResizeRenderSize(); ResizeRenderSize(viewportType, &screenWidth, &screenHeight, gameWidth, gameHeight, &sourceRect, &destRect, &target);
} }
if (CheckCollisionPointRec(mousePosition, increaseTypeButton) && mousePressed){ if (CheckCollisionPointRec(mousePosition, increaseTypeButton) && mousePressed){
viewportType = (viewportType + 1) % VIEWPORT_TYPE_COUNT; viewportType = (viewportType + 1) % VIEWPORT_TYPE_COUNT;
ResizeRenderSize(); ResizeRenderSize(viewportType, &screenWidth, &screenHeight, gameWidth, gameHeight, &sourceRect, &destRect, &target);
} }
Vector2 textureMousePosition = Screen2RenderTexturePosition(mousePosition, &sourceRect, &destRect); Vector2 textureMousePosition = Screen2RenderTexturePosition(mousePosition, &sourceRect, &destRect);
@ -204,9 +166,16 @@ int main(void)
DrawText(TextFormat("Window Resolution: %d x %d", screenWidth, screenHeight), 15, 15, 10, BLACK); DrawText(TextFormat("Window Resolution: %d x %d", screenWidth, screenHeight), 15, 15, 10, BLACK);
DrawText(TextFormat("Game Resolution: %d x %d", gameWidth, gameHeight), 15, 30, 10, BLACK); DrawText(TextFormat("Game Resolution: %d x %d", gameWidth, gameHeight), 15, 30, 10, BLACK);
Vector2 scaleRatio = (Vector2){destRect.width / sourceRect.width, destRect.height / -sourceRect.height};
DrawText(TextFormat("Type: %s", ViewportTypeNames[viewportType]), 15, 45, 10, BLACK); DrawText(TextFormat("Type: %s", ViewportTypeNames[viewportType]), 15, 45, 10, BLACK);
DrawText(TextFormat("Scale ratio: %.2f x %.2f", scaleRatio.x, scaleRatio.y), 15, 60, 10, BLACK); Vector2 scaleRatio = (Vector2){destRect.width / sourceRect.width, destRect.height / -sourceRect.height};
if (scaleRatio.x < 0.001f || scaleRatio.y < 0.001f)
{
DrawText(TextFormat("Scale ratio: INVALID"), 15, 60, 10, BLACK);
}
else
{
DrawText(TextFormat("Scale ratio: %.2f x %.2f", scaleRatio.x, scaleRatio.y), 15, 60, 10, BLACK);
}
DrawText(TextFormat("Source size: %.2f x %.2f", sourceRect.width, -sourceRect.height), 15, 75, 10, BLACK); DrawText(TextFormat("Source size: %.2f x %.2f", sourceRect.width, -sourceRect.height), 15, 75, 10, BLACK);
DrawText(TextFormat("Destination size: %.2f x %.2f", destRect.width, destRect.height), 15, 90, 10, BLACK); DrawText(TextFormat("Destination size: %.2f x %.2f", destRect.width, destRect.height), 15, 90, 10, BLACK);
@ -232,90 +201,151 @@ int main(void)
return 0; return 0;
} }
void KeepAspectCenteredInteger(int scr_w, int scr_h, int view_w, int view_h, Rectangle* source_rect, Rectangle* dest_rect){ //--------------------------------------------------------------------------------------
source_rect->x = 0.f; // Module Functions Definition
source_rect->y = (float)view_h; //--------------------------------------------------------------------------------------
source_rect->width = (float)view_w; static void KeepAspectCenteredInteger(int screenWidth, int screenHeight, int gameWidth, int gameHeight, Rectangle *sourceRect, Rectangle *destRect)
source_rect->height = (float)-view_h; {
sourceRect->x = 0.f;
sourceRect->y = (float)gameHeight;
sourceRect->width = (float)gameWidth;
sourceRect->height = (float)-gameHeight;
const int ratio_x = (scr_w/view_w); const int ratio_x = (screenWidth/gameWidth);
const int ratio_y = (scr_h/view_h); const int ratio_y = (screenHeight/gameHeight);
const float resize_ratio = (float)(ratio_x < ratio_y ? ratio_x : ratio_y); const float resizeRatio = (float)(ratio_x < ratio_y ? ratio_x : ratio_y);
dest_rect->x = (float)(int)((scr_w - (view_w * resize_ratio)) * 0.5); destRect->x = (float)(int)((screenWidth - (gameWidth * resizeRatio)) * 0.5);
dest_rect->y = (float)(int)((scr_h - (view_h * resize_ratio)) * 0.5); destRect->y = (float)(int)((screenHeight - (gameHeight * resizeRatio)) * 0.5);
dest_rect->width = (float)(int)(view_w * resize_ratio); destRect->width = (float)(int)(gameWidth * resizeRatio);
dest_rect->height = (float)(int)(view_h * resize_ratio); destRect->height = (float)(int)(gameHeight * resizeRatio);
} }
void KeepHeightCenteredInteger(int scr_w, int scr_h, int view_w, int view_h, Rectangle* source_rect, Rectangle* dest_rect){ static void KeepHeightCenteredInteger(int screenWidth, int screenHeight, int gameWidth, int gameHeight, Rectangle *sourceRect, Rectangle *destRect)
const float resize_ratio = ((float)scr_h/(float)view_h); {
source_rect->x = 0.f; const float resizeRatio = (float)(screenHeight/gameHeight);
source_rect->y = 0.f; sourceRect->x = 0.f;
source_rect->width = (float)(int)(scr_w / resize_ratio); sourceRect->y = 0.f;
source_rect->height = (float)-view_h; sourceRect->width = (float)(int)(screenWidth / resizeRatio);
sourceRect->height = (float)-gameHeight;
dest_rect->x = (float)(int)((scr_w - (source_rect->width * resize_ratio)) * 0.5); destRect->x = (float)(int)((screenWidth - (sourceRect->width * resizeRatio)) * 0.5);
dest_rect->y = (float)(int)((scr_h - (view_h * resize_ratio)) * 0.5); destRect->y = (float)(int)((screenHeight - (gameHeight * resizeRatio)) * 0.5);
dest_rect->width = (float)(int)(source_rect->width * resize_ratio); destRect->width = (float)(int)(sourceRect->width * resizeRatio);
dest_rect->height = (float)(int)(view_h * resize_ratio); destRect->height = (float)(int)(gameHeight * resizeRatio);
} }
void KeepWidthCenteredInteger(int scr_w, int scr_h, int view_w, int view_h, Rectangle* source_rect, Rectangle* dest_rect){ static void KeepWidthCenteredInteger(int screenWidth, int screenHeight, int gameWidth, int gameHeight, Rectangle *sourceRect, Rectangle *destRect)
const float resize_ratio = ((float)scr_w/(float)view_w); {
source_rect->x = 0.f; const float resizeRatio = (float)(screenWidth/gameWidth);
source_rect->y = 0.f; sourceRect->x = 0.f;
source_rect->width = (float)view_w; sourceRect->y = 0.f;
source_rect->height = (float)(int)(scr_h / resize_ratio); sourceRect->width = (float)gameWidth;
sourceRect->height = (float)(int)(screenHeight / resizeRatio);
dest_rect->x = (float)(int)((scr_w - (view_w * resize_ratio)) * 0.5); destRect->x = (float)(int)((screenWidth - (gameWidth * resizeRatio)) * 0.5);
dest_rect->y = (float)(int)((scr_h - (source_rect->height * resize_ratio)) * 0.5); destRect->y = (float)(int)((screenHeight - (sourceRect->height * resizeRatio)) * 0.5);
dest_rect->width = (float)(int)(view_w * resize_ratio); destRect->width = (float)(int)(gameWidth * resizeRatio);
dest_rect->height = (float)(int)(source_rect->height * resize_ratio); destRect->height = (float)(int)(sourceRect->height * resizeRatio);
source_rect->height *= -1.f; sourceRect->height *= -1.f;
} }
void KeepAspectCentered(int scr_w, int scr_h, int view_w, int view_h, Rectangle* source_rect, Rectangle* dest_rect){ static void KeepAspectCentered(int screenWidth, int screenHeight, int gameWidth, int gameHeight, Rectangle *sourceRect, Rectangle *destRect)
source_rect->x = 0.f; {
source_rect->y = (float)view_h; sourceRect->x = 0.f;
source_rect->width = (float)view_w; sourceRect->y = (float)gameHeight;
source_rect->height = (float)-view_h; sourceRect->width = (float)gameWidth;
sourceRect->height = (float)-gameHeight;
const float ratio_x = ((float)scr_w/(float)view_w); const float ratio_x = ((float)screenWidth/(float)gameWidth);
const float ratio_y = ((float)scr_h/(float)view_h); const float ratio_y = ((float)screenHeight/(float)gameHeight);
const float resize_ratio = (ratio_x < ratio_y ? ratio_x : ratio_y); const float resizeRatio = (ratio_x < ratio_y ? ratio_x : ratio_y);
dest_rect->x = (float)(int)((scr_w - (view_w * resize_ratio)) * 0.5); destRect->x = (float)(int)((screenWidth - (gameWidth * resizeRatio)) * 0.5);
dest_rect->y = (float)(int)((scr_h - (view_h * resize_ratio)) * 0.5); destRect->y = (float)(int)((screenHeight - (gameHeight * resizeRatio)) * 0.5);
dest_rect->width = (float)(int)(view_w * resize_ratio); destRect->width = (float)(int)(gameWidth * resizeRatio);
dest_rect->height = (float)(int)(view_h * resize_ratio); destRect->height = (float)(int)(gameHeight * resizeRatio);
} }
void KeepHeightCentered(int scr_w, int scr_h, int view_w, int view_h, Rectangle* source_rect, Rectangle* dest_rect){ static void KeepHeightCentered(int screenWidth, int screenHeight, int gameWidth, int gameHeight, Rectangle *sourceRect, Rectangle *destRect)
const float resize_ratio = ((float)scr_h/(float)view_h); {
source_rect->x = 0.f; const float resizeRatio = ((float)screenHeight/(float)gameHeight);
source_rect->y = 0.f; sourceRect->x = 0.f;
source_rect->width = (float)(int)((float)scr_w / resize_ratio); sourceRect->y = 0.f;
source_rect->height = (float)-view_h; sourceRect->width = (float)(int)((float)screenWidth / resizeRatio);
sourceRect->height = (float)-gameHeight;
dest_rect->x = (float)(int)((scr_w - (source_rect->width * resize_ratio)) * 0.5); destRect->x = (float)(int)((screenWidth - (sourceRect->width * resizeRatio)) * 0.5);
dest_rect->y = (float)(int)((scr_h - (view_h * resize_ratio)) * 0.5); destRect->y = (float)(int)((screenHeight - (gameHeight * resizeRatio)) * 0.5);
dest_rect->width = (float)(int)(source_rect->width * resize_ratio); destRect->width = (float)(int)(sourceRect->width * resizeRatio);
dest_rect->height = (float)(int)(view_h * resize_ratio); destRect->height = (float)(int)(gameHeight * resizeRatio);
} }
void KeepWidthCentered(int scr_w, int scr_h, int view_w, int view_h, Rectangle* source_rect, Rectangle* dest_rect){ static void KeepWidthCentered(int screenWidth, int screenHeight, int gameWidth, int gameHeight, Rectangle *sourceRect, Rectangle *destRect)
const float resize_ratio = ((float)scr_w/(float)view_w); {
source_rect->x = 0.f; const float resizeRatio = ((float)screenWidth/(float)gameWidth);
source_rect->y = 0.f; sourceRect->x = 0.f;
source_rect->width = (float)view_w; sourceRect->y = 0.f;
source_rect->height = (float)(int)((float)scr_h / resize_ratio); sourceRect->width = (float)gameWidth;
sourceRect->height = (float)(int)((float)screenHeight / resizeRatio);
dest_rect->x = (float)(int)((scr_w - (view_w * resize_ratio)) * 0.5); destRect->x = (float)(int)((screenWidth - (gameWidth * resizeRatio)) * 0.5);
dest_rect->y = (float)(int)((scr_h - (source_rect->height * resize_ratio)) * 0.5); destRect->y = (float)(int)((screenHeight - (sourceRect->height * resizeRatio)) * 0.5);
dest_rect->width = (float)(int)(view_w * resize_ratio); destRect->width = (float)(int)(gameWidth * resizeRatio);
dest_rect->height = (float)(int)(source_rect->height * resize_ratio); destRect->height = (float)(int)(sourceRect->height * resizeRatio);
source_rect->height *= -1.f; sourceRect->height *= -1.f;
}
static void ResizeRenderSize(enum ViewportType viewportType, int *screenWidth, int *screenHeight, int gameWidth, int gameHeight, Rectangle *sourceRect, Rectangle *destRect, RenderTexture2D *target)
{
*screenWidth = GetScreenWidth();
*screenHeight = GetScreenHeight();
switch(viewportType)
{
case KEEP_ASPECT_INTEGER:
{
KeepAspectCenteredInteger(*screenWidth, *screenHeight, gameWidth, gameHeight, sourceRect, destRect);
break;
}
case KEEP_HEIGHT_INTEGER:
{
KeepHeightCenteredInteger(*screenWidth, *screenHeight, gameWidth, gameHeight, sourceRect, destRect);
break;
}
case KEEP_WIDTH_INTEGER:
{
KeepWidthCenteredInteger(*screenWidth, *screenHeight, gameWidth, gameHeight, sourceRect, destRect);
break;
}
case KEEP_ASPECT:
{
KeepAspectCentered(*screenWidth, *screenHeight, gameWidth, gameHeight, sourceRect, destRect);
break;
}
case KEEP_HEIGHT:
{
KeepHeightCentered(*screenWidth, *screenHeight, gameWidth, gameHeight, sourceRect, destRect);
break;
}
case KEEP_WIDTH:
{
KeepWidthCentered(*screenWidth, *screenHeight, gameWidth, gameHeight, sourceRect, destRect);
break;
}
default: {}
}
UnloadRenderTexture(*target);
*target = LoadRenderTexture(sourceRect->width, -sourceRect->height);
}
// Example how to calculate position on RenderTexture
static Vector2 Screen2RenderTexturePosition(Vector2 point, Rectangle *textureRect, Rectangle *scaledRect)
{
Vector2 relativePosition = {point.x - scaledRect->x, point.y - scaledRect->y};
Vector2 ratio = {textureRect->width / scaledRect->width, -textureRect->height / scaledRect->height};
return (Vector2){relativePosition.x * ratio.x, relativePosition.y * ratio.x};
} }