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testgeometry: allow to use arrows to move the triangle

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Sylvain
2024-01-12 16:09:11 +01:00
committed by Sam Lantinga
parent 4033a0a83b
commit 101f903bb1
1 changed files with 17 additions and 0 deletions
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17
test/testgeometry.c
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@@ -29,6 +29,8 @@ static SDL_Texture **sprites;
static SDL_BlendMode blendMode = SDL_BLENDMODE_NONE; static SDL_BlendMode blendMode = SDL_BLENDMODE_NONE;
static float angle = 0.0f; static float angle = 0.0f;
static int sprite_w, sprite_h; static int sprite_w, sprite_h;
static int translate_cx = 0;
static int translate_cy = 0;
static int done; static int done;
@@ -92,6 +94,18 @@ static void loop(void)
angle += yrel; angle += yrel;
} }
} }
} else if (event.type == SDL_EVENT_KEY_DOWN) {
if (event.key.keysym.sym == SDLK_LEFT) {
translate_cx -= 1;
} else if (event.key.keysym.sym == SDLK_RIGHT) {
translate_cx += 1;
} else if (event.key.keysym.sym == SDLK_UP) {
translate_cy -= 1;
} else if (event.key.keysym.sym == SDLK_DOWN) {
translate_cy += 1;
} else {
SDLTest_CommonEvent(state, &event, &done);
}
} else { } else {
SDLTest_CommonEvent(state, &event, &done); SDLTest_CommonEvent(state, &event, &done);
} }
@@ -119,6 +133,9 @@ static void loop(void)
cy = viewport.y + viewport.h / 2; cy = viewport.y + viewport.h / 2;
d = (viewport.w + viewport.h) / 5.f; d = (viewport.w + viewport.h) / 5.f;
cx += translate_cx;
cy += translate_cy;
a = (angle * 3.1415f) / 180.0f; a = (angle * 3.1415f) / 180.0f;
verts[0].position.x = cx + d * SDL_cosf(a); verts[0].position.x = cx + d * SDL_cosf(a);
verts[0].position.y = cy + d * SDL_sinf(a); verts[0].position.y = cy + d * SDL_sinf(a);