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Put boilerplate code into easing base class

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This commit is contained in:
Tobias Loose
2013-12-05 23:27:28 +01:00
parent 93d1a637b6
commit 8bb58ca3b1
1 changed files with 28 additions and 23 deletions
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51
projects/mtg/include/Easing.h
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@@ -28,7 +28,25 @@ public:
time_acc = 0; duration = 0; time_acc = 0; duration = 0;
} }
virtual void update(float dt) = 0; void update(float dt)
{
if(duration > 0)
{
time_acc += dt;
if(time_acc > duration)
{
time_acc = duration;
value = start_value + delta_value;
}
else
{
updateValue();
}
}
}
virtual void updateValue() = 0;
void start(float targetValue, float _duration) void start(float targetValue, float _duration)
{ {
@@ -55,30 +73,17 @@ class InOutQuadEasing : public Easing
public: public:
InOutQuadEasing(float val): Easing(val) {} InOutQuadEasing(float val): Easing(val) {}
void update(float dt) void updateValue()
{ {
if(duration > 0) float time_tmp = time_acc * 2 / duration;
if (time_tmp < 1)
{ {
time_acc += dt; value = delta_value/2*time_tmp*time_tmp + start_value;
}
if(time_acc > duration) else
{ {
time_acc = duration; time_tmp -= 1;
value = start_value + delta_value; value = -delta_value/2 * (time_tmp*(time_tmp-2) - 1) + start_value;
}
else
{
float time_tmp = time_acc * 2 / duration;
if (time_tmp < 1)
{
value = delta_value/2*time_tmp*time_tmp + start_value;
}
else
{
time_tmp -= 1;
value = -delta_value/2 * (time_tmp*(time_tmp-2) - 1) + start_value;
}
}
} }
} }
}; };