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Some initial widget imps

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This commit is contained in:
Jack Andersen
2016-03-15 17:37:51 -10:00
parent b3859c4476
commit fcee32f666
13 changed files with 300 additions and 18 deletions
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41
Runtime/Graphics/CGraphics.cpp
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@@ -126,6 +126,30 @@ void CGraphics::SetModelMatrix(const zeus::CTransform& xf)
SetViewMatrix();
}
zeus::CMatrix4f CGraphics::CalculatePerspectiveMatrix(float fovy, float aspect,
float near, float far)
{
CProjectionState st;
float tfov = std::tan(zeus::degToRad(fovy * 0.5f));
st.x14_near = near;
st.x18_far = far;
st.xc_top = near * tfov;
st.x10_bottom = -st.xc_top;
st.x8_right = aspect * near * tfov;
st.x4_left = -st.x8_right;
float rml = st.x8_right - st.x4_left;
float rpl = st.x8_right + st.x4_left;
float tmb = st.xc_top - st.x10_bottom;
float tpb = st.xc_top + st.x10_bottom;
float fmn = st.x18_far - st.x14_near;
float fpn = st.x18_far + st.x14_near;
return zeus::CMatrix4f(2.f * st.x14_near / rml, 0.f, rpl / rml, 0.f,
0.f, 2.f * st.x14_near / tmb, tpb / tmb, 0.f,
0.f, 0.f, -fpn / fmn, -2.f * st.x18_far * st.x14_near / fmn,
0.f, 0.f, -1.f, 0.f);
}
zeus::CMatrix4f CGraphics::GetPerspectiveProjectionMatrix()
{
float rml = g_Proj.x8_right - g_Proj.x4_left;
@@ -163,6 +187,23 @@ void CGraphics::SetPerspective(float fovy, float aspect, float near, float far)
g_Proj.x10_bottom = -g_Proj.xc_top;
g_Proj.x8_right = aspect * near * tfov;
g_Proj.x4_left = -g_Proj.x8_right;
FlushProjection();
}
void CGraphics::SetOrtho(float left, float right,
float top, float bottom,
float znear, float zfar)
{
g_Proj.x0_persp = false;
g_Proj.x4_left = left;
g_Proj.x8_right = right;
g_Proj.xc_top = top;
g_Proj.x10_bottom = bottom;
g_Proj.x14_near = znear;
g_Proj.x18_far = zfar;
FlushProjection();
}
void CGraphics::FlushProjection()