1 files changed, 113 insertions, 0 deletions

diff --git a/src/renderer/Draw.cpp b/src/renderer/Draw.cpp
new file mode 100644
index 00000000..9c5921c3
--- /dev/null
+++ b/src/renderer/Draw.cpp
@@ -0,0 +1,113 @@
+#include "common.h"
+
+#include "Draw.h"
+#include "Frontend.h"
+#include "Camera.h"
+#include "CutsceneMgr.h"
+
+float CDraw::ms_fAspectRatio = DEFAULT_ASPECT_RATIO;
+#ifdef ASPECT_RATIO_SCALE
+float CDraw::ms_fScaledFOV = 45.0f;
+#endif
+
+float CDraw::ms_fNearClipZ;
+float CDraw::ms_fFarClipZ;
+float CDraw::ms_fFOV = 45.0f;
+float CDraw::ms_fLODDistance;
+
+uint8 CDraw::FadeValue;
+uint8 CDraw::FadeRed;
+uint8 CDraw::FadeGreen;
+uint8 CDraw::FadeBlue;
+
+#ifdef PROPER_SCALING	
+bool CDraw::ms_bProperScaling = true;
+#endif
+#ifdef  FIX_RADAR
+bool CDraw::ms_bFixRadar = true;	
+#endif
+#ifdef FIX_SPRITES
+bool CDraw::ms_bFixSprites = true;	
+#endif
+
+#ifdef ASPECT_RATIO_SCALE
+float
+FindAspectRatio(void)
+{
+	switch (FrontEndMenuManager.m_PrefsUseWideScreen) {
+	case AR_AUTO:
+		return SCREEN_WIDTH / SCREEN_HEIGHT;
+	default:
+	case AR_4_3:
+		return 4.0f / 3.0f;
+	case AR_5_4:
+		return 5.0f / 4.0f;
+	case AR_16_10:
+		return 16.0f / 10.0f;
+	case AR_16_9:
+		return 16.0f / 9.0f;
+	case AR_21_9:
+		return 21.0f / 9.0f;
+	};
+}
+#endif
+
+float
+CDraw::CalculateAspectRatio(void)
+{
+#ifdef ASPECT_RATIO_SCALE
+	if (TheCamera.m_WideScreenOn)
+		CDraw::ms_fAspectRatio = (5.f / 3.f) * FindAspectRatio() / (16.f / 9.f); // It's used on theatrical showings according to Wiki
+	else
+		CDraw::ms_fAspectRatio = FindAspectRatio();
+#else
+	if(FrontEndMenuManager.m_PrefsUseWideScreen) {
+		if (TheCamera.m_WideScreenOn)
+			CDraw::ms_fAspectRatio = 5.f / 3.f; // It's used on theatrical showings according to Wiki
+		else
+			CDraw::ms_fAspectRatio = 16.f / 9.f;
+	} else if (TheCamera.m_WideScreenOn) {
+		CDraw::ms_fAspectRatio = 5.f/4.f;
+	} else {
+		CDraw::ms_fAspectRatio = 4.f/3.f;
+	}
+#endif
+	return CDraw::ms_fAspectRatio;
+}
+
+#ifdef ASPECT_RATIO_SCALE
+// convert a 4:3 hFOV to vFOV,
+// then convert that vFOV to hFOV for our aspect ratio,
+// i.e. HOR+
+float
+CDraw::ConvertFOV(float hfov)
+{
+	// => tan(hFOV/2) = tan(vFOV/2)*aspectRatio
+	// => tan(vFOV/2) = tan(hFOV/2)/aspectRatio
+	float ar1 = DEFAULT_ASPECT_RATIO;
+	float ar2 = GetAspectRatio();
+	hfov = DEGTORAD(hfov);
+	float vfov = Atan(tan(hfov/2) / ar1) *2;
+	hfov = Atan(tan(vfov/2) * ar2) *2;
+	return RADTODEG(hfov);
+}
+#endif
+
+void
+CDraw::SetFOV(float fov)
+{
+#ifdef ASPECT_RATIO_SCALE
+	if (!CCutsceneMgr::IsRunning())
+		ms_fScaledFOV = ConvertFOV(fov);
+	else
+		ms_fScaledFOV = fov;
+#endif
+	ms_fFOV = fov;
+}
+
+#ifdef PROPER_SCALING	
+float CDraw::ScaleY(float y)
+{
+	return ms_bProperScaling ? y : y * ((float)DEFAULT_SCREEN_HEIGHT/SCREEN_HEIGHT_NTSC);
+}
+#endif
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