mirror of https://github.com/encounter/SDL.git
Add testgeometry to draw a non uniform triangle
--use-texture: an option to load icon.bmp as a texture handle mouse motion: rotate the triangle
This commit is contained in:
Sylvain
Sylvain Becker
parent
53bcb3e0e9
commit
bc2173baf9
|
|
@ -42,6 +42,7 @@ add_executable(testdropfile testdropfile.c)
|
|||
add_executable(testerror testerror.c)
|
||||
add_executable(testfile testfile.c)
|
||||
add_executable(testgamecontroller testgamecontroller.c)
|
||||
add_executable(testgeometry testgeometry.c)
|
||||
add_executable(testgesture testgesture.c)
|
||||
add_executable(testgl2 testgl2.c)
|
||||
add_executable(testgles testgles.c)
|
||||
|
|
|
|||
|
|
@ -29,6 +29,7 @@ TARGETS = \
|
|||
testfile$(EXE) \
|
||||
testfilesystem$(EXE) \
|
||||
testgamecontroller$(EXE) \
|
||||
testgeometry$(EXE) \
|
||||
testgesture$(EXE) \
|
||||
testhaptic$(EXE) \
|
||||
testhittesting$(EXE) \
|
||||
|
|
@ -162,6 +163,9 @@ testfile$(EXE): $(srcdir)/testfile.c
|
|||
testgamecontroller$(EXE): $(srcdir)/testgamecontroller.c
|
||||
$(CC) -o $@ $^ $(CFLAGS) $(LIBS)
|
||||
|
||||
testgeometry$(EXE): $(srcdir)/testgeometry.c
|
||||
$(CC) -o $@ $^ $(CFLAGS) $(LIBS)
|
||||
|
||||
testgesture$(EXE): $(srcdir)/testgesture.c
|
||||
$(CC) -o $@ $^ $(CFLAGS) $(LIBS) @MATHLIB@
|
||||
|
||||
|
|
|
|||
|
|
@ -2,7 +2,7 @@ BINPATH = .
|
|||
|
||||
TARGETS = testatomic.exe testdisplayinfo.exe testbounds.exe testdraw2.exe &
|
||||
testdrawchessboard.exe testdropfile.exe testerror.exe testfile.exe &
|
||||
testfilesystem.exe testgamecontroller.exe testgesture.exe &
|
||||
testfilesystem.exe testgamecontroller.exe testgeometry.exe testgesture.exe &
|
||||
testhittesting.exe testhotplug.exe testiconv.exe testime.exe testlocale.exe &
|
||||
testintersections.exe testjoystick.exe testkeys.exe testloadso.exe &
|
||||
testlock.exe testmessage.exe testoverlay2.exe testplatform.exe &
|
||||
|
|
|
|||
|
|
@ -0,0 +1,303 @@
|
|||
/*
|
||||
Copyright (C) 1997-2021 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 a RGB triangle, with texture */
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <stdio.h>
|
||||
#include <time.h>
|
||||
|
||||
#ifdef __EMSCRIPTEN__
|
||||
#include <emscripten/emscripten.h>
|
||||
#endif
|
||||
|
||||
#include "SDL_test_common.h"
|
||||
|
||||
static SDLTest_CommonState *state;
|
||||
static SDL_bool use_texture = SDL_FALSE;
|
||||
static SDL_Texture **sprites;
|
||||
static SDL_BlendMode blendMode = SDL_BLENDMODE_NONE;
|
||||
static double angle = 0.0;
|
||||
static int sprite_w, sprite_h;
|
||||
|
||||
int done;
|
||||
|
||||
/* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */
|
||||
static void
|
||||
quit(int rc)
|
||||
{
|
||||
SDL_free(sprites);
|
||||
SDLTest_CommonQuit(state);
|
||||
exit(rc);
|
||||
}
|
||||
|
||||
int
|
||||
LoadSprite(const char *file)
|
||||
{
|
||||
int i;
|
||||
SDL_Surface *temp;
|
||||
|
||||
/* Load the sprite image */
|
||||
temp = SDL_LoadBMP(file);
|
||||
if (temp == NULL) {
|
||||
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't load %s: %s", file, SDL_GetError());
|
||||
return (-1);
|
||||
}
|
||||
sprite_w = temp->w;
|
||||
sprite_h = temp->h;
|
||||
|
||||
/* Set transparent pixel as the pixel at (0,0) */
|
||||
if (temp->format->palette) {
|
||||
SDL_SetColorKey(temp, 1, *(Uint8 *) temp->pixels);
|
||||
} else {
|
||||
switch (temp->format->BitsPerPixel) {
|
||||
case 15:
|
||||
SDL_SetColorKey(temp, 1, (*(Uint16 *) temp->pixels) & 0x00007FFF);
|
||||
break;
|
||||
case 16:
|
||||
SDL_SetColorKey(temp, 1, *(Uint16 *) temp->pixels);
|
||||
break;
|
||||
case 24:
|
||||
SDL_SetColorKey(temp, 1, (*(Uint32 *) temp->pixels) & 0x00FFFFFF);
|
||||
break;
|
||||
case 32:
|
||||
SDL_SetColorKey(temp, 1, *(Uint32 *) temp->pixels);
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
/* Create textures from the image */
|
||||
for (i = 0; i < state->num_windows; ++i) {
|
||||
SDL_Renderer *renderer = state->renderers[i];
|
||||
sprites[i] = SDL_CreateTextureFromSurface(renderer, temp);
|
||||
if (!sprites[i]) {
|
||||
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create texture: %s\n", SDL_GetError());
|
||||
SDL_FreeSurface(temp);
|
||||
return (-1);
|
||||
}
|
||||
if (SDL_SetTextureBlendMode(sprites[i], blendMode) < 0) {
|
||||
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't set blend mode: %s\n", SDL_GetError());
|
||||
SDL_FreeSurface(temp);
|
||||
SDL_DestroyTexture(sprites[i]);
|
||||
return (-1);
|
||||
}
|
||||
}
|
||||
SDL_FreeSurface(temp);
|
||||
|
||||
/* We're ready to roll. :) */
|
||||
return (0);
|
||||
}
|
||||
|
||||
|
||||
void
|
||||
loop()
|
||||
{
|
||||
int i;
|
||||
SDL_Event event;
|
||||
|
||||
/* Check for events */
|
||||
while (SDL_PollEvent(&event)) {
|
||||
|
||||
if (event.type == SDL_MOUSEMOTION) {
|
||||
if (event.motion.state) {
|
||||
int xrel, yrel;
|
||||
int window_w, window_h;
|
||||
SDL_Window *window = SDL_GetWindowFromID(event.motion.windowID);
|
||||
SDL_GetWindowSize(window, &window_w, &window_h);
|
||||
xrel = event.motion.xrel;
|
||||
yrel = event.motion.yrel;
|
||||
if (event.motion.y < window_h / 2) {
|
||||
angle += xrel;
|
||||
} else {
|
||||
angle -= xrel;
|
||||
}
|
||||
if (event.motion.x < window_w / 2) {
|
||||
angle -= yrel;
|
||||
} else {
|
||||
angle += yrel;
|
||||
}
|
||||
}
|
||||
} else {
|
||||
SDLTest_CommonEvent(state, &event, &done);
|
||||
}
|
||||
}
|
||||
|
||||
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);
|
||||
|
||||
{
|
||||
SDL_Rect viewport;
|
||||
double a;
|
||||
double d;
|
||||
int cx, cy;
|
||||
|
||||
/* Query the sizes */
|
||||
SDL_RenderGetViewport(renderer, &viewport);
|
||||
SDL_Vertex verts[3];
|
||||
SDL_zeroa(verts);
|
||||
cx = viewport.x + viewport.w / 2;
|
||||
cy = viewport.y + viewport.h / 2;
|
||||
d = (viewport.w + viewport.h) / 5;
|
||||
|
||||
a = (angle * 3.1415) / 180.0;
|
||||
verts[0].position.x = cx + d * SDL_cos(a);
|
||||
verts[0].position.y = cy + d * SDL_sin(a);
|
||||
verts[0].color.r = 0xFF;
|
||||
verts[0].color.g = 0;
|
||||
verts[0].color.b = 0;
|
||||
verts[0].color.a = 0xFF;
|
||||
|
||||
a = ((angle + 120) * 3.1415) / 180.0;
|
||||
verts[1].position.x = cx + d * SDL_cos(a);
|
||||
verts[1].position.y = cy + d * SDL_sin(a);
|
||||
verts[1].color.r = 0;
|
||||
verts[1].color.g = 0xFF;
|
||||
verts[1].color.b = 0;
|
||||
verts[1].color.a = 0xFF;
|
||||
|
||||
a = ((angle + 240) * 3.1415) / 180.0;
|
||||
verts[2].position.x = cx + d * SDL_cos(a);
|
||||
verts[2].position.y = cy + d * SDL_sin(a);
|
||||
verts[2].color.r = 0;
|
||||
verts[2].color.g = 0;
|
||||
verts[2].color.b = 0xFF;
|
||||
verts[2].color.a = 0xFF;
|
||||
|
||||
if (use_texture) {
|
||||
verts[0].tex_coord.x = 0.5;
|
||||
verts[0].tex_coord.y = 0.0;
|
||||
verts[1].tex_coord.x = 1.0;
|
||||
verts[1].tex_coord.y = 1.0;
|
||||
verts[2].tex_coord.x = 0.0;
|
||||
verts[2].tex_coord.y = 1.0;
|
||||
}
|
||||
|
||||
SDL_RenderGeometry(renderer, sprites[i], verts, 3, NULL, 0);
|
||||
}
|
||||
|
||||
SDL_RenderPresent(renderer);
|
||||
}
|
||||
#ifdef __EMSCRIPTEN__
|
||||
if (done) {
|
||||
emscripten_cancel_main_loop();
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
int
|
||||
main(int argc, char *argv[])
|
||||
{
|
||||
int i;
|
||||
const char *icon = "icon.bmp";
|
||||
Uint32 then, now, frames;
|
||||
|
||||
/* Enable standard application logging */
|
||||
SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
|
||||
|
||||
/* 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], "--use-texture") == 0) {
|
||||
use_texture = SDL_TRUE;
|
||||
consumed = 1;
|
||||
}
|
||||
}
|
||||
if (consumed < 0) {
|
||||
static const char *options[] = { "[--blend none|blend|add|mod]", "[--use-texture]", NULL };
|
||||
SDLTest_CommonLogUsage(state, argv[0], options);
|
||||
return 1;
|
||||
}
|
||||
i += consumed;
|
||||
}
|
||||
if (!SDLTest_CommonInit(state)) {
|
||||
return 2;
|
||||
}
|
||||
|
||||
/* Create the windows, initialize the renderers, and load the textures */
|
||||
sprites =
|
||||
(SDL_Texture **) SDL_malloc(state->num_windows * sizeof(*sprites));
|
||||
if (!sprites) {
|
||||
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Out of memory!\n");
|
||||
quit(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);
|
||||
sprites[i] = NULL;
|
||||
}
|
||||
if (use_texture) {
|
||||
if (LoadSprite(icon) < 0) {
|
||||
quit(2);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
srand((unsigned int)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
|
||||
|
||||
/* 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);
|
||||
}
|
||||
|
||||
quit(0);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* vi: set ts=4 sw=4 expandtab: */
|
||||
Loading…
Reference in New Issue