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1 files changed, 113 insertions, 0 deletions

diff --git a/indra/newview/llhudrender.cpp b/indra/newview/llhudrender.cpp
new file mode 100644
index 0000000000..9b74b3963b
--- /dev/null
+++ b/indra/newview/llhudrender.cpp
@@ -0,0 +1,113 @@
+/** 
+ * @file llhudrender.cpp
+ * @brief LLHUDRender class implementation
+ *
+ * Copyright (c) 2002-$CurrentYear$, Linden Research, Inc.
+ * $License$
+ */
+
+#include "llviewerprecompiledheaders.h"
+
+#include "llhudrender.h"
+
+#include "llgl.h"
+#include "llviewercamera.h"
+#include "v3math.h"
+#include "llquaternion.h"
+#include "llfontgl.h"
+#include "llimagegl.h"
+#include "llglheaders.h"
+#include "llviewerwindow.h"
+
+void hud_render_utf8text(const std::string &str, const LLVector3 &pos_agent,
+					 const LLFontGL &font,
+					 const U8 style,
+					 const F32 x_offset, const F32 y_offset,
+					 const LLColor4& color,
+					 const BOOL orthographic)
+{
+	LLWString wstr(utf8str_to_wstring(str));
+	hud_render_text(wstr, pos_agent, font, style, x_offset, y_offset, color, orthographic);
+}
+
+void hud_render_text(const LLWString &wstr, const LLVector3 &pos_agent,
+					const LLFontGL &font,
+					const U8 style,
+					const F32 x_offset, const F32 y_offset,
+					const LLColor4& color,
+					const BOOL orthographic)
+{
+	// Do cheap plane culling
+	LLVector3 dir_vec = pos_agent - gCamera->getOrigin();
+	dir_vec /= dir_vec.magVec();
+
+	if (wstr.empty() || (!orthographic && dir_vec * gCamera->getAtAxis() <= 0.f))
+	{
+		return;
+	}
+
+	LLVector3 right_axis;
+	LLVector3 up_axis;
+	if (orthographic)
+	{
+		right_axis.setVec(0.f, -1.f / gViewerWindow->getWindowHeight(), 0.f);
+		up_axis.setVec(0.f, 0.f, 1.f / gViewerWindow->getWindowHeight());
+	}
+	else
+	{
+		gCamera->getPixelVectors(pos_agent, up_axis, right_axis);
+	}
+	LLCoordFrame render_frame = *gCamera;
+	LLQuaternion rot;
+	if (!orthographic)
+	{
+		rot = render_frame.getQuaternion();
+		rot = rot * LLQuaternion(-F_PI_BY_TWO, gCamera->getYAxis());
+		rot = rot * LLQuaternion(F_PI_BY_TWO, gCamera->getXAxis());
+	}
+	else
+	{
+		rot = LLQuaternion(-F_PI_BY_TWO, LLVector3(0.f, 0.f, 1.f));
+		rot = rot * LLQuaternion(-F_PI_BY_TWO, LLVector3(0.f, 1.f, 0.f));
+	}
+	F32 angle;
+	LLVector3 axis;
+	rot.getAngleAxis(&angle, axis);
+
+	LLVector3 render_pos = pos_agent + (floorf(x_offset) * right_axis) + (floorf(y_offset) * up_axis);
+
+	//get the render_pos in screen space
+	F64 modelview[16];
+	F64 projection[16];
+	GLint viewport[4];
+	glGetDoublev(GL_MODELVIEW_MATRIX, modelview);
+	glGetDoublev(GL_PROJECTION_MATRIX, projection);
+	glGetIntegerv(GL_VIEWPORT, viewport);
+
+	F64 winX, winY, winZ;
+	gluProject(render_pos.mV[0], render_pos.mV[1], render_pos.mV[2],
+				modelview, projection, viewport,
+				&winX, &winY, &winZ);
+		
+	//fonts all render orthographically, set up projection
+	glMatrixMode(GL_PROJECTION);
+	glPushMatrix();
+	glMatrixMode(GL_MODELVIEW);
+	
+	LLUI::pushMatrix();
+		
+	gViewerWindow->setup2DRender();
+
+	LLUI::loadIdentity();
+	LLUI::translate((F32) winX*1.0f/LLFontGL::sScaleX, (F32) winY*1.0f/(LLFontGL::sScaleY), -(((F32) winZ*2.f)-1.f));
+	//glRotatef(angle * RAD_TO_DEG, axis.mV[VX], axis.mV[VY], axis.mV[VZ]);
+	//glScalef(right_scale, up_scale, 1.f);
+	F32 right_x;
+	
+	font.render(wstr, 0, 0, 0, color, LLFontGL::LEFT, LLFontGL::BASELINE, style, wstr.length(), 1000, &right_x);
+	LLUI::popMatrix();
+	
+	glMatrixMode(GL_PROJECTION);
+	glPopMatrix();
+	glMatrixMode(GL_MODELVIEW);
+}