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author Miodrag Milanovic <mmicko@gmail.com>2016-02-27 16:28:05 +0100
committer Miodrag Milanovic <mmicko@gmail.com>2016-02-27 16:53:49 +0100
commitcf6dc7d370407914020f3e623719f09c8668c692 (patch)
tree46b3416d091b4c09b50fba7ffcbd310aed032cc8 /3rdparty/SDL2/test/testintersections.c
parent64135e73f973d9b95beb0c60b65feb34fbfec64a (diff)
Placed SDL2 source since we need it on some platforms (nw)
Diffstat (limited to '3rdparty/SDL2/test/testintersections.c')
-rw-r--r--3rdparty/SDL2/test/testintersections.c363
1 files changed, 363 insertions, 0 deletions
diff --git a/3rdparty/SDL2/test/testintersections.c b/3rdparty/SDL2/test/testintersections.c
new file mode 100644
index 00000000000..82aae633886
--- /dev/null
+++ b/3rdparty/SDL2/test/testintersections.c
@@ -0,0 +1,363 @@
+/*
+ Copyright (C) 1997-2016 Sam Lantinga <slouken@libsdl.org>
+
+ 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 <stdlib.h>
+#include <stdio.h>
+#include <time.h>
+
+#ifdef __EMSCRIPTEN__
+#include <emscripten/emscripten.h>
+#endif
+
+#include "SDL_test_common.h"
+
+#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 SDL_bool cycle_color;
+static SDL_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;
+
+int mouse_begin_x = -1, mouse_begin_y = -1;
+int done;
+
+void
+DrawPoints(SDL_Renderer * renderer)
+{
+ int i;
+ int x, y;
+ SDL_Rect viewport;
+
+ /* Query the sizes */
+ SDL_RenderGetViewport(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 = rand() % viewport.w;
+ y = rand() % viewport.h;
+ SDL_RenderDrawPoint(renderer, x, y);
+ }
+}
+
+#define MAX_LINES 16
+int num_lines = 0;
+SDL_Rect lines[MAX_LINES];
+static int
+add_line(int x1, int y1, int x2, int y2)
+{
+ if (num_lines >= MAX_LINES)
+ return 0;
+ if ((x1 == x2) && (y1 == y2))
+ return 0;
+
+ SDL_Log("adding line (%d, %d), (%d, %d)\n", 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;
+}
+
+
+void
+DrawLines(SDL_Renderer * renderer)
+{
+ int i;
+ SDL_Rect viewport;
+
+ /* Query the sizes */
+ SDL_RenderGetViewport(renderer, &viewport);
+
+ SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
+
+ for (i = 0; i < num_lines; ++i) {
+ if (i == -1) {
+ SDL_RenderDrawLine(renderer, 0, 0, viewport.w - 1, viewport.h - 1);
+ SDL_RenderDrawLine(renderer, 0, viewport.h - 1, viewport.w - 1, 0);
+ SDL_RenderDrawLine(renderer, 0, viewport.h / 2, viewport.w - 1, viewport.h / 2);
+ SDL_RenderDrawLine(renderer, viewport.w / 2, 0, viewport.w / 2, viewport.h - 1);
+ } else {
+ SDL_RenderDrawLine(renderer, lines[i].x, lines[i].y, lines[i].w, lines[i].h);
+ }
+ }
+}
+
+#define MAX_RECTS 16
+int num_rects = 0;
+SDL_Rect rects[MAX_RECTS];
+static int
+add_rect(int x1, int y1, int x2, int y2)
+{
+ if (num_rects >= MAX_RECTS)
+ return 0;
+ if ((x1 == x2) || (y1 == y2))
+ return 0;
+
+ if (x1 > x2)
+ SWAP(int, x1, x2);
+ if (y1 > y2)
+ SWAP(int, y1, y2);
+
+ SDL_Log("adding rect (%d, %d), (%d, %d) [%dx%d]\n", 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++) {
+ int x1, y1, x2, y2;
+ SDL_Rect r;
+
+ r = rects[i];
+ x1 = lines[j].x;
+ y1 = lines[j].y;
+ x2 = lines[j].w;
+ y2 = lines[j].h;
+
+ if (SDL_IntersectRectAndLine(&r, &x1, &y1, &x2, &y2)) {
+ SDL_RenderDrawLine(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_Rect r;
+ if (SDL_IntersectRect(&rects[i], &rects[j], &r)) {
+ SDL_RenderFillRect(renderer, &r);
+ }
+ }
+}
+
+void
+loop()
+{
+ int i;
+ SDL_Event event;
+
+ /* Check for events */
+ while (SDL_PollEvent(&event)) {
+ SDLTest_CommonEvent(state, &event, &done);
+ switch (event.type) {
+ case SDL_MOUSEBUTTONDOWN:
+ mouse_begin_x = event.button.x;
+ mouse_begin_y = event.button.y;
+ break;
+ case SDL_MOUSEBUTTONUP:
+ 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_KEYDOWN:
+ switch (event.key.keysym.sym) {
+ case 'l':
+ if (event.key.keysym.mod & KMOD_SHIFT)
+ num_lines = 0;
+ else
+ add_line(rand() % 640, rand() % 480, rand() % 640,
+ rand() % 480);
+ break;
+ case 'r':
+ if (event.key.keysym.mod & KMOD_SHIFT)
+ num_rects = 0;
+ else
+ add_rect(rand() % 640, rand() % 480, rand() % 640,
+ rand() % 480);
+ 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 __EMSCRIPTEN__
+ if (done) {
+ emscripten_cancel_main_loop();
+ }
+#endif
+}
+
+int
+main(int argc, char *argv[])
+{
+ int i;
+ Uint32 then, now, frames;
+
+ /* Enable standard application logging */
+ SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
+
+ /* Initialize parameters */
+ num_objects = NUM_OBJECTS;
+
+ /* 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], "add") == 0) {
+ blendMode = SDL_BLENDMODE_ADD;
+ consumed = 2;
+ } else if (SDL_strcasecmp(argv[i + 1], "mod") == 0) {
+ blendMode = SDL_BLENDMODE_MOD;
+ consumed = 2;
+ }
+ }
+ } else if (SDL_strcasecmp(argv[i], "--cyclecolor") == 0) {
+ cycle_color = SDL_TRUE;
+ consumed = 1;
+ } else if (SDL_strcasecmp(argv[i], "--cyclealpha") == 0) {
+ cycle_alpha = SDL_TRUE;
+ consumed = 1;
+ } else if (SDL_isdigit(*argv[i])) {
+ num_objects = SDL_atoi(argv[i]);
+ consumed = 1;
+ }
+ }
+ if (consumed < 0) {
+ SDL_Log("Usage: %s %s [--blend none|blend|add|mod] [--cyclecolor] [--cyclealpha]\n",
+ argv[0], SDLTest_CommonUsage(state));
+ return 1;
+ }
+ i += consumed;
+ }
+ if (!SDLTest_CommonInit(state)) {
+ return 2;
+ }
+
+ /* 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);
+ }
+
+ srand(time(NULL));
+
+ /* Main render loop */
+ frames = 0;
+ then = SDL_GetTicks();
+ done = 0;
+
+#ifdef __EMSCRIPTEN__
+ emscripten_set_main_loop(loop, 0, 1);
+#else
+ while (!done) {
+ ++frames;
+ loop();
+ }
+#endif
+
+ SDLTest_CommonQuit(state);
+
+ /* Print out some timing information */
+ now = SDL_GetTicks();
+ if (now > then) {
+ double fps = ((double) frames * 1000) / (now - then);
+ SDL_Log("%2.2f frames per second\n", fps);
+ }
+ return 0;
+}
+
+/* vi: set ts=4 sw=4 expandtab: */