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#include "matrix_stack.h"
namespace AsuraEngine
{
namespace Graphics
{
MatrixStack::MatrixStack()
: top(0)
{
// ջʼջô˱֤ջԶǿգȡֵ
m_Stack[top].SetIdentity();
}
MatrixStack::~MatrixStack()
{
}
void MatrixStack::LoadIdentity()
{
m_Stack[top].SetIdentity();
}
bool MatrixStack::Push()
{
if (top == ASURA_MAX_MATRIX_STACK_DEPTH - 1)
return false;
++top;
m_Stack[top] = m_Stack[top - 1];
return true;
}
bool MatrixStack::Pop()
{
if (top == 0)
return false;
--top;
return true;
}
AEMath::Matrix44& MatrixStack::GetTop()
{
return m_Stack[top];
}
uint MatrixStack::GetTopIndex()
{
return top;
}
uint MatrixStack::GetCapacity()
{
return ASURA_MAX_MATRIX_STACK_DEPTH;
}
void MatrixStack::Ortho(float left, float right, float bottom, float top, float near, float far)
{
m_Stack[this->top].Ortho(left, right, bottom, top, near, far);
}
void MatrixStack::Rotate(float angle)
{
m_Stack[top].Rotate(angle);
}
void MatrixStack::Translate(float x, float y)
{
m_Stack[top].Translate(x, y);
}
void MatrixStack::Scale(float x, float y)
{
m_Stack[top].Scale(x, y);
}
}
}
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