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add simple rainbow as well

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This commit is contained in:
Pavol Rusnak 2010-12-03 02:01:22 +01:00
parent 4277c350fd
commit b807bfb012
2 changed files with 13 additions and 2 deletions
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1
.gitignore vendored Normal file
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@ -0,0 +1 @@
ledbar

14
ledbar.c
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@ -40,6 +40,16 @@ void (*program)(int i, int t, double *r, double *g, double *b);
// rainbow // rainbow
void programQ(int i, int t, double *r, double *g, double *b) void programQ(int i, int t, double *r, double *g, double *b)
{
double index = 1.0*i/BOXES;
double time = 0.01*t;
*r = (sin(M_PI*2*index+time)+1.0)/2;
*g = (sin(M_PI*2*index+time+M_PI*2/3)+1.0)/2;
*b = (sin(M_PI*2*index+time+M_PI*4/3)+1.0)/2;
}
// rainbow with different speeds
void programW(int i, int t, double *r, double *g, double *b)
{ {
double index = 1.0*i/BOXES; double index = 1.0*i/BOXES;
double time = 0.01*t; double time = 0.01*t;
@ -48,9 +58,8 @@ void programQ(int i, int t, double *r, double *g, double *b)
*b = (sin(M_PI*2*index+time*1.618)+1.0)/2; *b = (sin(M_PI*2*index+time*1.618)+1.0)/2;
} }
// knight rider // knight rider
void programW(int i, int t, double *r, double *g, double *b) void programE(int i, int t, double *r, double *g, double *b)
{ {
static float pos = BOXES/2; static float pos = BOXES/2;
static float dir = 0.001; static float dir = 0.001;
@ -113,6 +122,7 @@ int main(int argc, char* argv[])
switch(event.key.keysym.sym) { switch(event.key.keysym.sym) {
case SDLK_q: program = programQ; break; case SDLK_q: program = programQ; break;
case SDLK_w: program = programW; break; case SDLK_w: program = programW; break;
case SDLK_e: program = programE; break;
case SDLK_ESCAPE: quit = 1; break; case SDLK_ESCAPE: quit = 1; break;
default: break; default: break;
} }