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Small optimization.

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This commit is contained in:
Dario Manesku 2013-10-21 20:46:27 +01:00
parent 64b2e96772
commit 0c9ed73476
1 changed files with 10 additions and 12 deletions
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22
examples/14-shadowvolumes/shadowvolumes.cpp
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@ -2384,13 +2384,12 @@ int _main_(int /*_argc*/, char** /*_argv*/)
{
enum Direction
{
Left = 0,
Down,
Right,
Up,
DirectionCount,
Left = 0x0,
Down = 0x1,
Right = 0x2,
Up = 0x3,
};
const uint8_t directionMask = 0x3;
uint8_t currentDirection = Left;
float currX = 0.0f;
@ -2398,7 +2397,7 @@ int _main_(int /*_argc*/, char** /*_argv*/)
const float stepX = 20.0f;
const float stepY = 20.0f;
uint8_t stateStep = 0;
float stateChange = 1.0f;
uint8_t stateChange = 1;
for (uint8_t ii = 0; ii < settings_instanceCount; ++ii)
{
@ -2414,12 +2413,12 @@ int _main_(int /*_argc*/, char** /*_argv*/)
inst.m_pos[2] = currY;
inst.m_model = bunnyModel;
stateStep++;
if (stateStep >= floor(stateChange/2.0f) )
++stateStep;
if (stateStep >= ( (stateChange & ~0x1) >> 1) )
{
currentDirection = (currentDirection+1)%DirectionCount;
currentDirection = (++currentDirection) & directionMask;
stateStep = 0;
stateChange += 1.0f;
++stateChange;
}
switch (currentDirection)
@ -2428,7 +2427,6 @@ int _main_(int /*_argc*/, char** /*_argv*/)
case Down: currY -= stepY; break;
case Right: currX += stepX; break;
case Up: currY += stepY; break;
default: break;
}
}
}