// _UpdateThread
int32
ColorField::_UpdateThread(void* data)
{
// initializing
ColorField* colorField = (ColorField *)data;
bool looperLocked = colorField->LockLooper();
BBitmap* bitmap = colorField->fBgBitmap[0];
port_id port = colorField->fUpdatePort;
orientation orient = colorField->fOrientation;
if (looperLocked)
colorField->UnlockLooper();
float h, s, v, r, g, b;
int R, G, B;
// drawing
int32 msg_code;
char msg_buffer;
while (true) {
port_info info;
do {
read_port(port, &msg_code, &msg_buffer, sizeof(msg_buffer));
get_port_info(port, &info);
} while (info.queue_count);
if (colorField->LockLooper()) {
uint colormode = colorField->fMode;
float fixedvalue = colorField->fFixedValue;
int width = (int)colorField->Width();
int height = (int)colorField->Height();
colorField->UnlockLooper();
bitmap->Lock();
//bigtime_t now = system_time();
uint8* bits = (uint8*)bitmap->Bits();
uint32 bpr = bitmap->BytesPerRow();
// offset 2 pixels from top and left
bits += 2 * 4 + 2 * bpr;
switch (colormode) {
case R_SELECTED: {
R = round(fixedvalue * 255);
for (int y = height; y >= 0; y--) {
uint8* bitsHandle = bits;
int B = y / height * 255;
for (int x = 0; x <= width; ++x) {
int G = x / width * 255;
set_bits(bitsHandle, R, G, B);
bitsHandle += 4;
}
bits += bpr;
}
}; break;
case G_SELECTED: {
G = round(fixedvalue * 255);
for (int y = height; y >= 0; y--) {
uint8* bitsHandle = bits;
int B = y / height * 255;
for (int x = 0; x <= width; ++x) {
int R = x / width * 255;
set_bits(bitsHandle, R, G, B);
bitsHandle += 4;
}
bits += bpr;
}
}; break;
case B_SELECTED: {
B = round(fixedvalue * 255);
for (int y = height; y >= 0; y--) {
uint8* bitsHandle = bits;
int G = y / height * 255;
for (int x = 0; x <= width; ++x) {
int R = x / width * 255;
set_bits(bitsHandle, R, G, B);
bitsHandle += 4;
}
bits += bpr;
}
}; break;
case H_SELECTED: {
h = fixedvalue;
if (orient == B_VERTICAL) {
for (int y = 0; y <= height; ++y) {
v = (float)(height - y) / height;
uint8* bitsHandle = bits;
for (int x = 0; x <= width; ++x) {
s = (float)x / width;
HSV_to_RGB( h, s, v, r, g, b );
set_bits(bitsHandle, round(r * 255.0), round(g * 255.0), round(b * 255.0));
bitsHandle += 4;
}
bits += bpr;
}
} else {
for (int y = 0; y <= height; ++y) {
s = (float)y / height;
uint8* bitsHandle = bits;
for (int x = 0; x <= width; ++x) {
v = (float)(width - x) / width;
HSV_to_RGB( h, s, v, r, g, b );
set_bits(bitsHandle, round(r * 255.0), round(g * 255.0), round(b * 255.0));
bitsHandle += 4;
}
bits += bpr;
}
}
}; break;
case S_SELECTED: {
s = fixedvalue;
for (int y = 0; y <= height; ++y) {
v = (float)(height - y) / height;
uint8* bitsHandle = bits;
for (int x = 0; x <= width; ++x) {
h = 6.0 / width * x;
HSV_to_RGB( h, s, v, r, g, b );
set_bits(bitsHandle, round(r * 255.0), round(g * 255.0), round(b * 255.0));
bitsHandle += 4;
}
bits += bpr;
}
}; break;
case V_SELECTED: {
v = fixedvalue;
for (int y = 0; y <= height; ++y) {
s = (float)(height - y) / height;
uint8* bitsHandle = bits;
for (int x = 0; x <= width; ++x) {
h = 6.0 / width * x;
HSV_to_RGB( h, s, v, r, g, b );
set_bits(bitsHandle, round(r * 255.0), round(g * 255.0), round(b * 255.0));
bitsHandle += 4;
}
bits += bpr;
}
}; break;
}
//printf("color field update: %lld\n", system_time() - now);
bitmap->Unlock();
if (colorField->LockLooper()) {
colorField->Update(2);
colorField->UnlockLooper();
}
}
}
}
