static void
Draw(void)
{
glClear(GL_COLOR_BUFFER_BIT);
glPushMatrix();
glRotatef(Xrot, 1, 0, 0);
glRotatef(Yrot, 0, 1, 0);
glPushMatrix();
glTranslatef(0, +1.2, 0);
DrawSample(GL_FALSE);
glPopMatrix();
/* set Mesa back-door state for testing cylindrical wrap mode */
if (CylWrap)
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_PRIORITY, 0.125);
glPushMatrix();
glTranslatef(0, -1.2, 0);
DrawSample(GL_TRUE);
glPopMatrix();
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_PRIORITY, 1.0);
glPopMatrix();
glutSwapBuffers();
}
void DrawSignal(
uint32_t Voffset,
uSample * PrevData,
uSample * CurrData,
uint16_t PrevColor,
uint16_t CurrColor)
{
register uint32_t i = SIGNAL_HSTART+1;
register SampleRet Prev;
register SampleRet Curr;
Prev.C = CurrData[SIGNAL_HSTART].i + Voffset;
if (Prev.C <= GRID_RECT_START_Y) Prev.C = GRID_RECT_START_Y+1;
if (Prev.C >= GRID_RECT_END_Y) Prev.C = GRID_RECT_END_Y-1;
Prev.P = PrevData[SIGNAL_HSTART].i + Voffset;
if (Prev.P <= GRID_RECT_START_Y) Prev.P = GRID_RECT_START_Y+1;
if (Prev.P >= GRID_RECT_END_Y) Prev.P = GRID_RECT_END_Y-1;
for (; i < SIGNAL_HSTOP; ++i)
{
/* Prev = PrevData[i].i + Voffset;
lastPrev = DrawSample(PrevColor,i,Prev,lastPrev);
Curr = CurrData[i].i + Voffset;
lastCurr = DrawSample(CurrColor,i,Curr,lastCurr);*/
Curr.P = PrevData[i].i + Voffset;
Curr.C = CurrData[i].i + Voffset;
/* avoid drawing out of grid only once per sample (return value)*/
if (Curr.P <= GRID_RECT_START_Y) Curr.P = GRID_RECT_START_Y+1;
if (Curr.P >= GRID_RECT_END_Y) Curr.P = GRID_RECT_END_Y-1;
if (Curr.C <= GRID_RECT_START_Y) Curr.C = GRID_RECT_START_Y+1;
if (Curr.C >= GRID_RECT_END_Y) Curr.C = GRID_RECT_END_Y-1;
DrawSample(PrevColor, CurrColor, i, Prev, Curr);
Prev = Curr;
}
}
