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Added test program to verify fill functionality
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/* Simple program: draw as many random rectangles on the screen as possible */ | ||
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#include <stdlib.h> | ||
#include <stdio.h> | ||
#include <time.h> | ||
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#include "common.h" | ||
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#define NUM_RECTS 100 | ||
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static CommonState *state; | ||
static int num_rects; | ||
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; | ||
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void | ||
DrawRects(SDL_WindowID window) | ||
{ | ||
int i, n; | ||
SDL_Rect rect; | ||
int window_w, window_h; | ||
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SDL_SelectRenderer(window); | ||
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/* Query the sizes */ | ||
SDL_GetWindowSize(window, &window_w, &window_h); | ||
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/* Move the sprite, bounce at the wall, and draw */ | ||
n = 0; | ||
SDL_SetRenderDrawColor(0xA0, 0xA0, 0xA0, 0xFF); | ||
SDL_RenderFill(NULL); | ||
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SDL_SetRenderDrawBlendMode(blendMode); | ||
for (i = 0; i < num_rects; ++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(255, (Uint8) current_color, | ||
(Uint8) current_color, (Uint8) current_alpha); | ||
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rect.w = rand() % (window_h / 2); | ||
rect.h = rand() % (window_h / 2); | ||
rect.x = (rand() % window_w) - (rect.w / 2); | ||
rect.y = (rand() % window_w) - (rect.h / 2); | ||
SDL_RenderFill(&rect); | ||
} | ||
SDL_SetRenderDrawBlendMode(SDL_BLENDMODE_NONE); | ||
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/* Update the screen! */ | ||
SDL_RenderPresent(); | ||
} | ||
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int | ||
main(int argc, char *argv[]) | ||
{ | ||
int i, done; | ||
SDL_Event event; | ||
Uint32 then, now, frames; | ||
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/* Initialize parameters */ | ||
num_rects = NUM_RECTS; | ||
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/* Initialize test framework */ | ||
state = CommonCreateState(argv, SDL_INIT_VIDEO); | ||
if (!state) { | ||
return 1; | ||
} | ||
for (i = 1; i < argc;) { | ||
int consumed; | ||
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consumed = 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], "mask") == 0) { | ||
blendMode = SDL_BLENDMODE_MASK; | ||
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_rects = SDL_atoi(argv[i]); | ||
consumed = 1; | ||
} | ||
} | ||
if (consumed < 0) { | ||
fprintf(stderr, | ||
"Usage: %s %s [--blend none|mask|blend|add|mod] [--cyclecolor] [--cyclealpha]\n", | ||
argv[0], CommonUsage(state)); | ||
return 1; | ||
} | ||
i += consumed; | ||
} | ||
if (!CommonInit(state)) { | ||
return 2; | ||
} | ||
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/* Create the windows and initialize the renderers */ | ||
for (i = 0; i < state->num_windows; ++i) { | ||
SDL_SelectRenderer(state->windows[i]); | ||
SDL_SetRenderDrawColor(0xA0, 0xA0, 0xA0, 0xFF); | ||
SDL_RenderFill(NULL); | ||
} | ||
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srand(time(NULL)); | ||
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/* Main render loop */ | ||
frames = 0; | ||
then = SDL_GetTicks(); | ||
done = 0; | ||
while (!done) { | ||
/* Check for events */ | ||
++frames; | ||
while (SDL_PollEvent(&event)) { | ||
CommonEvent(state, &event, &done); | ||
switch (event.type) { | ||
case SDL_WINDOWEVENT: | ||
switch (event.window.event) { | ||
case SDL_WINDOWEVENT_EXPOSED: | ||
SDL_SelectRenderer(event.window.windowID); | ||
SDL_SetRenderDrawColor(0xA0, 0xA0, 0xA0, 0xFF); | ||
SDL_RenderFill(NULL); | ||
break; | ||
} | ||
break; | ||
default: | ||
break; | ||
} | ||
} | ||
for (i = 0; i < state->num_windows; ++i) { | ||
DrawRects(state->windows[i]); | ||
} | ||
} | ||
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/* Print out some timing information */ | ||
now = SDL_GetTicks(); | ||
if (now > then) { | ||
double fps = ((double) frames * 1000) / (now - then); | ||
printf("%2.2f frames per second\n", fps); | ||
} | ||
return 0; | ||
} | ||
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/* vi: set ts=4 sw=4 expandtab: */ |