From 6aaedb813fa11ba0679c3051bc2eb28646b9506c Mon Sep 17 00:00:00 2001 From: 3gg <3gg@shellblade.net> Date: Sat, 30 Aug 2025 16:53:58 -0700 Subject: Update to SDL3 --- src/contrib/SDL-3.2.20/test/testintersections.c | 391 ++++++++++++++++++++++++ 1 file changed, 391 insertions(+) create mode 100644 src/contrib/SDL-3.2.20/test/testintersections.c (limited to 'src/contrib/SDL-3.2.20/test/testintersections.c') diff --git a/src/contrib/SDL-3.2.20/test/testintersections.c b/src/contrib/SDL-3.2.20/test/testintersections.c new file mode 100644 index 0000000..cc58511 --- /dev/null +++ b/src/contrib/SDL-3.2.20/test/testintersections.c @@ -0,0 +1,391 @@ +/* + Copyright (C) 1997-2025 Sam Lantinga + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely. +*/ + +/* Simple program: draw as many random objects on the screen as possible */ + +#include +#include + +#ifdef SDL_PLATFORM_EMSCRIPTEN +#include +#endif + +#define SWAP(typ, a, b) \ + do { \ + typ t = a; \ + a = b; \ + b = t; \ + } while (0) +#define NUM_OBJECTS 100 + +static SDLTest_CommonState *state; +static int num_objects; +static bool cycle_color; +static bool cycle_alpha; +static int cycle_direction = 1; +static int current_alpha = 255; +static int current_color = 255; +static SDL_BlendMode blendMode = SDL_BLENDMODE_NONE; + +static float mouse_begin_x = -1.0f, mouse_begin_y = -1.0f; + +static void DrawPoints(SDL_Renderer *renderer) +{ + int i; + float x, y; + SDL_Rect viewport; + + /* Query the sizes */ + SDL_GetRenderViewport(renderer, &viewport); + + for (i = 0; i < num_objects * 4; ++i) { + /* Cycle the color and alpha, if desired */ + if (cycle_color) { + current_color += cycle_direction; + if (current_color < 0) { + current_color = 0; + cycle_direction = -cycle_direction; + } + if (current_color > 255) { + current_color = 255; + cycle_direction = -cycle_direction; + } + } + if (cycle_alpha) { + current_alpha += cycle_direction; + if (current_alpha < 0) { + current_alpha = 0; + cycle_direction = -cycle_direction; + } + if (current_alpha > 255) { + current_alpha = 255; + cycle_direction = -cycle_direction; + } + } + SDL_SetRenderDrawColor(renderer, 255, (Uint8)current_color, + (Uint8)current_color, (Uint8)current_alpha); + + x = (float)SDL_rand(viewport.w); + y = (float)SDL_rand(viewport.h); + SDL_RenderPoint(renderer, x, y); + } +} + +#define MAX_LINES 16 +static int num_lines = 0; +static SDL_FRect lines[MAX_LINES]; +static int add_line(float x1, float y1, float x2, float y2) +{ + if (num_lines >= MAX_LINES) { + return 0; + } + if ((x1 == x2) && (y1 == y2)) { + return 0; + } + + SDL_Log("adding line (%g, %g), (%g, %g)", x1, y1, x2, y2); + lines[num_lines].x = x1; + lines[num_lines].y = y1; + lines[num_lines].w = x2; + lines[num_lines].h = y2; + + return ++num_lines; +} + +static void DrawLines(SDL_Renderer *renderer) +{ + int i; + SDL_Rect viewport; + + /* Query the sizes */ + SDL_GetRenderViewport(renderer, &viewport); + + SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255); + + for (i = 0; i < num_lines; ++i) { + if (i == -1) { + SDL_RenderLine(renderer, 0.0f, 0.0f, (float)(viewport.w - 1), (float)(viewport.h - 1)); + SDL_RenderLine(renderer, 0.0f, (float)(viewport.h - 1), (float)(viewport.w - 1), 0.0f); + SDL_RenderLine(renderer, 0.0f, (float)(viewport.h / 2), (float)(viewport.w - 1), (float)(viewport.h / 2)); + SDL_RenderLine(renderer, (float)(viewport.w / 2), 0.0f, (float)(viewport.w / 2), (float)(viewport.h - 1)); + } else { + SDL_RenderLine(renderer, lines[i].x, lines[i].y, lines[i].w, lines[i].h); + } + } +} + +#define MAX_RECTS 16 +static int num_rects = 0; +static SDL_FRect rects[MAX_RECTS]; +static int add_rect(float x1, float y1, float x2, float y2) +{ + if (num_rects >= MAX_RECTS) { + return 0; + } + if ((x1 == x2) || (y1 == y2)) { + return 0; + } + + if (x1 > x2) { + SWAP(float, x1, x2); + } + if (y1 > y2) { + SWAP(float, y1, y2); + } + + SDL_Log("adding rect (%g, %g), (%g, %g) [%gx%g]", x1, y1, x2, y2, + x2 - x1, y2 - y1); + + rects[num_rects].x = x1; + rects[num_rects].y = y1; + rects[num_rects].w = x2 - x1; + rects[num_rects].h = y2 - y1; + + return ++num_rects; +} + +static void +DrawRects(SDL_Renderer *renderer) +{ + SDL_SetRenderDrawColor(renderer, 255, 127, 0, 255); + SDL_RenderFillRects(renderer, rects, num_rects); +} + +static void +DrawRectLineIntersections(SDL_Renderer *renderer) +{ + int i, j; + + SDL_SetRenderDrawColor(renderer, 0, 255, 55, 255); + + for (i = 0; i < num_rects; i++) { + for (j = 0; j < num_lines; j++) { + float x1, y1, x2, y2; + SDL_FRect r; + + r = rects[i]; + x1 = lines[j].x; + y1 = lines[j].y; + x2 = lines[j].w; + y2 = lines[j].h; + + if (SDL_GetRectAndLineIntersectionFloat(&r, &x1, &y1, &x2, &y2)) { + SDL_RenderLine(renderer, x1, y1, x2, y2); + } + } + } +} + +static void +DrawRectRectIntersections(SDL_Renderer *renderer) +{ + int i, j; + + SDL_SetRenderDrawColor(renderer, 255, 200, 0, 255); + + for (i = 0; i < num_rects; i++) { + for (j = i + 1; j < num_rects; j++) { + SDL_FRect r; + if (SDL_GetRectIntersectionFloat(&rects[i], &rects[j], &r)) { + SDL_RenderFillRect(renderer, &r); + } + } + } +} + +static void loop(void *arg) +{ + int i; + SDL_Event event; + int *done = (int *)arg; + + /* Check for events */ + while (SDL_PollEvent(&event)) { + SDLTest_CommonEvent(state, &event, done); + SDL_ConvertEventToRenderCoordinates(SDL_GetRenderer(SDL_GetWindowFromEvent(&event)), &event); + switch (event.type) { + case SDL_EVENT_MOUSE_BUTTON_DOWN: + mouse_begin_x = event.button.x; + mouse_begin_y = event.button.y; + break; + case SDL_EVENT_MOUSE_BUTTON_UP: + if (event.button.button == 3) { + add_line(mouse_begin_x, mouse_begin_y, event.button.x, event.button.y); + } + if (event.button.button == 1) { + add_rect(mouse_begin_x, mouse_begin_y, event.button.x, event.button.y); + } + break; + case SDL_EVENT_KEY_DOWN: + switch (event.key.key) { + case SDLK_L: + if (event.key.mod & SDL_KMOD_SHIFT) { + num_lines = 0; + } else { + add_line( + (float)SDL_rand(640), + (float)SDL_rand(480), + (float)SDL_rand(640), + (float)SDL_rand(480)); + } + break; + case SDLK_R: + if (event.key.mod & SDL_KMOD_SHIFT) { + num_rects = 0; + } else { + add_rect( + (float)SDL_rand(640), + (float)SDL_rand(480), + (float)SDL_rand(640), + (float)SDL_rand(480)); + } + break; + default: + break; + } + break; + default: + break; + } + } + for (i = 0; i < state->num_windows; ++i) { + SDL_Renderer *renderer = state->renderers[i]; + if (state->windows[i] == NULL) { + continue; + } + SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF); + SDL_RenderClear(renderer); + + DrawRects(renderer); + DrawPoints(renderer); + DrawRectRectIntersections(renderer); + DrawLines(renderer); + DrawRectLineIntersections(renderer); + + SDL_RenderPresent(renderer); + } +#ifdef SDL_PLATFORM_EMSCRIPTEN + if (*done) { + emscripten_cancel_main_loop(); + } +#endif +} + +int main(int argc, char *argv[]) +{ + int i; + Uint64 then, now; + Uint32 frames; + int done; + + /* Initialize parameters */ + num_objects = -1; /* -1 means not initialized */ + + /* Initialize test framework */ + state = SDLTest_CommonCreateState(argv, SDL_INIT_VIDEO); + if (!state) { + return 1; + } + + for (i = 1; i < argc;) { + int consumed; + + consumed = SDLTest_CommonArg(state, i); + if (consumed == 0) { + consumed = -1; + if (SDL_strcasecmp(argv[i], "--blend") == 0) { + if (argv[i + 1]) { + if (SDL_strcasecmp(argv[i + 1], "none") == 0) { + blendMode = SDL_BLENDMODE_NONE; + consumed = 2; + } else if (SDL_strcasecmp(argv[i + 1], "blend") == 0) { + blendMode = SDL_BLENDMODE_BLEND; + consumed = 2; + } else if (SDL_strcasecmp(argv[i + 1], "blend_premultiplied") == 0) { + blendMode = SDL_BLENDMODE_BLEND_PREMULTIPLIED; + consumed = 2; + } else if (SDL_strcasecmp(argv[i + 1], "add") == 0) { + blendMode = SDL_BLENDMODE_ADD; + consumed = 2; + } else if (SDL_strcasecmp(argv[i + 1], "add_premultiplied") == 0) { + blendMode = SDL_BLENDMODE_ADD_PREMULTIPLIED; + consumed = 2; + } else if (SDL_strcasecmp(argv[i + 1], "mod") == 0) { + blendMode = SDL_BLENDMODE_MOD; + consumed = 2; + } else if (SDL_strcasecmp(argv[i + 1], "mul") == 0) { + blendMode = SDL_BLENDMODE_MUL; + consumed = 2; + } + } + } else if (SDL_strcasecmp(argv[i], "--cyclecolor") == 0) { + cycle_color = true; + consumed = 1; + } else if (SDL_strcasecmp(argv[i], "--cyclealpha") == 0) { + cycle_alpha = true; + consumed = 1; + } else if (num_objects < 0 && SDL_isdigit(*argv[i])) { + char *endptr = NULL; + num_objects = (int)SDL_strtol(argv[i], &endptr, 0); + if (endptr != argv[i] && *endptr == '\0' && num_objects >= 0) { + consumed = 1; + } + } + } + if (consumed < 0) { + static const char *options[] = { "[--blend none|blend|blend_premultiplied|add|add_premultiplied|mod|mul]", "[--cyclecolor]", "[--cyclealpha]", "[count]", NULL }; + SDLTest_CommonLogUsage(state, argv[0], options); + return 1; + } + i += consumed; + } + if (!SDLTest_CommonInit(state)) { + return 2; + } + + if (num_objects < 0) { + num_objects = NUM_OBJECTS; + } + + /* Create the windows and initialize the renderers */ + for (i = 0; i < state->num_windows; ++i) { + SDL_Renderer *renderer = state->renderers[i]; + SDL_SetRenderDrawBlendMode(renderer, blendMode); + SDL_SetRenderDrawColor(renderer, 0xA0, 0xA0, 0xA0, 0xFF); + SDL_RenderClear(renderer); + } + + /* Main render loop */ + frames = 0; + then = SDL_GetTicks(); + done = 0; + +#ifdef SDL_PLATFORM_EMSCRIPTEN + emscripten_set_main_loop_arg(loop, &done, 0, 1); +#else + while (!done) { + ++frames; + loop(&done); + } +#endif + + /* Print out some timing information */ + now = SDL_GetTicks(); + + SDLTest_CommonQuit(state); + + if (now > then) { + double fps = ((double)frames * 1000) / (now - then); + SDL_Log("%2.2f frames per second", fps); + } + return 0; +} -- cgit v1.2.3