1HEADmaster

1 files changed, 355 insertions, 0 deletions

diff --git a/hammer/gizmo.cpp b/hammer/gizmo.cpp
new file mode 100644
index 0000000..b5a6c68
--- /dev/null
+++ b/hammer/gizmo.cpp
@@ -0,0 +1,355 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#include "stdafx.h"
+#include "BoundBox.h"
+#include "Gizmo.h"
+#include "Render3D.h"
+#include "Resource.h"
+#include "materialsystem/imesh.h"
+#include "TextureSystem.h"
+#include "camera.h"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include <tier0/memdbgon.h>
+
+
+static IEditorTexture* g_pAxisTexture = 0;
+static IEditorTexture* g_pRotateHandleTexture = 0;
+static IEditorTexture* g_pScaleHandleTexture = 0;
+static IEditorTexture* g_pTranslateHandleTexture = 0;
+
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+CGizmo::CGizmo(void)
+{
+	static bool bFirst = true;
+
+	if (bFirst)
+	{
+		g_pAxisTexture = g_Textures.FindActiveTexture("editor/gizmoAxis");
+		g_pRotateHandleTexture = g_Textures.FindActiveTexture("editor/gizmoRotateHandle");
+		g_pScaleHandleTexture = g_Textures.FindActiveTexture("editor/gizmoScaleHandle");
+		g_pTranslateHandleTexture = g_Textures.FindActiveTexture("editor/gizmoTranslateHandle");
+		bFirst = false;
+	}
+
+	Initialize();
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+// Input  : x - 
+//			y - 
+//			z - 
+//-----------------------------------------------------------------------------
+CGizmo::CGizmo(float x, float y, float z)
+{
+	Initialize();
+
+	m_Position[0] = x;
+	m_Position[1] = y;
+	m_Position[2] = z;
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CGizmo::Initialize(void)
+{
+	m_Position[0] = m_Position[1] = m_Position[2] = 0;
+
+	m_fAxisLength = 100;
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+// Input  : ViewPoint - 
+//			Origin - 
+//			EndPoint - 
+//			red - 
+//			green - 
+//			blue - 
+// Output : 
+//-----------------------------------------------------------------------------
+#define GIZMO_AXIS_WIDTH	2
+#define GIZMO_HANDLE_WIDTH	4
+
+void CGizmo::DrawGizmoAxis(CRender3D *pRender, Vector& Origin, 
+						   Vector& EndPoint, int red, int green, int blue, 
+						   unsigned int uAxisHandle)
+{
+	CCamera *pCamera = pRender->GetCamera();
+
+	Vector ViewUp;
+	pCamera->GetViewUp(ViewUp);
+
+	Vector ViewPoint;
+	Vector ViewForward;
+	pCamera->GetViewPoint(ViewPoint);
+	VectorSubtract(Origin, ViewPoint, ViewForward);
+
+	Vector Axis;
+	VectorSubtract(EndPoint, Origin, Axis);
+
+	CrossProduct(ViewForward, Axis, ViewUp);
+	VectorNormalize(ViewUp);
+
+	Vector Start;
+	Vector End;
+
+	//
+	// Draw the first segment of the gizmo axis.
+	//
+	VectorMA(Origin, 0.1, Axis, Start);
+	VectorMA(Origin, 0.25, Axis, End);
+	
+	pRender->BindTexture( g_pAxisTexture );
+	
+	CMeshBuilder meshBuilder;
+
+	CMatRenderContextPtr pRenderContext( MaterialSystemInterface() );
+	IMesh* pMesh = pRenderContext->GetDynamicMesh( );
+	meshBuilder.Begin( pMesh, MATERIAL_POLYGON, 4 );
+
+	meshBuilder.TexCoord2f(0, 0, 0);
+	meshBuilder.Position3f(Start[0] - ViewUp[0] * GIZMO_AXIS_WIDTH, Start[1] - ViewUp[1] * GIZMO_AXIS_WIDTH, Start[2] - ViewUp[2] * GIZMO_AXIS_WIDTH);
+	meshBuilder.Color3ub(red, green, blue);
+	meshBuilder.AdvanceVertex();
+
+	meshBuilder.TexCoord2f(0, 2, 0);
+	meshBuilder.Position3f(End[0] - ViewUp[0] * GIZMO_AXIS_WIDTH, End[1] - ViewUp[1] * GIZMO_AXIS_WIDTH, End[2] - ViewUp[2] * GIZMO_AXIS_WIDTH);
+	meshBuilder.Color3ub(red, green, blue);
+	meshBuilder.AdvanceVertex();
+
+	meshBuilder.TexCoord2f(0, 2, 1);
+	meshBuilder.Position3f(End[0] + ViewUp[0] * GIZMO_AXIS_WIDTH, End[1] + ViewUp[1] * GIZMO_AXIS_WIDTH, End[2] + ViewUp[2] * GIZMO_AXIS_WIDTH);
+	meshBuilder.Color3ub(red, green, blue);
+	meshBuilder.AdvanceVertex();
+
+	meshBuilder.TexCoord2f(0, 0, 1);
+	meshBuilder.Position3f(Start[0] + ViewUp[0] * GIZMO_AXIS_WIDTH, Start[1] + ViewUp[1] * GIZMO_AXIS_WIDTH, Start[2] + ViewUp[2] * GIZMO_AXIS_WIDTH);
+	meshBuilder.Color3ub(red, green, blue);
+	meshBuilder.AdvanceVertex();
+
+	meshBuilder.End();
+	pMesh->Draw();
+
+	//
+	// Draw the scale handle.
+	//
+	Start = End;
+	VectorMA(Origin, 0.35, Axis, End);
+	
+	pRender->BeginRenderHitTarget(this, uAxisHandle + GIZMO_HANDLE_SCALE);
+
+	pRender->BindTexture( g_pScaleHandleTexture );
+
+	pMesh = pRenderContext->GetDynamicMesh( );
+	meshBuilder.Begin( pMesh, MATERIAL_POLYGON, 4 );
+
+	meshBuilder.TexCoord2f( 0, 0, 0);
+	meshBuilder.Position3f(Start[0] - ViewUp[0] * GIZMO_HANDLE_WIDTH, Start[1] - ViewUp[1] * GIZMO_HANDLE_WIDTH, Start[2] - ViewUp[2] * GIZMO_HANDLE_WIDTH);
+	meshBuilder.Color3ub(red, green, blue);
+	meshBuilder.AdvanceVertex();
+
+	meshBuilder.TexCoord2f( 0, 1, 0);
+	meshBuilder.Position3f(End[0] - ViewUp[0] * GIZMO_HANDLE_WIDTH, End[1] - ViewUp[1] * GIZMO_HANDLE_WIDTH, End[2] - ViewUp[2] * GIZMO_HANDLE_WIDTH);
+	meshBuilder.Color3ub(red, green, blue);
+	meshBuilder.AdvanceVertex();
+
+	meshBuilder.TexCoord2f( 0, 1, 1);
+	meshBuilder.Position3f(End[0] + ViewUp[0] * GIZMO_HANDLE_WIDTH, End[1] + ViewUp[1] * GIZMO_HANDLE_WIDTH, End[2] + ViewUp[2] * GIZMO_HANDLE_WIDTH);
+	meshBuilder.Color3ub(red, green, blue);
+	meshBuilder.AdvanceVertex();
+
+	meshBuilder.TexCoord2f( 0, 0, 1);
+	meshBuilder.Position3f(Start[0] + ViewUp[0] * GIZMO_HANDLE_WIDTH, Start[1] + ViewUp[1] * GIZMO_HANDLE_WIDTH, Start[2] + ViewUp[2] * GIZMO_HANDLE_WIDTH);
+	meshBuilder.AdvanceVertex();
+
+	meshBuilder.End();
+	pMesh->Draw();
+
+	pRender->EndRenderHitTarget();
+
+	//
+	// Draw the second segment of the gizmo axis.
+	//
+	Start = End;
+	VectorMA(Origin, 0.5, Axis, End);
+	
+	pRender->BindTexture( g_pAxisTexture );
+
+	pMesh = pRenderContext->GetDynamicMesh( );
+	meshBuilder.Begin( pMesh, MATERIAL_POLYGON, 4 );
+
+	meshBuilder.TexCoord2f( 0, 0, 0);
+	meshBuilder.Position3f(Start[0] - ViewUp[0] * GIZMO_AXIS_WIDTH, Start[1] - ViewUp[1] * GIZMO_AXIS_WIDTH, Start[2] - ViewUp[2] * GIZMO_AXIS_WIDTH);
+	meshBuilder.Color3ub(red, green, blue);
+	meshBuilder.AdvanceVertex();
+
+	meshBuilder.TexCoord2f( 0, 2, 0);
+	meshBuilder.Position3f(End[0] - ViewUp[0] * GIZMO_AXIS_WIDTH, End[1] - ViewUp[1] * GIZMO_AXIS_WIDTH, End[2] - ViewUp[2] * GIZMO_AXIS_WIDTH);
+	meshBuilder.AdvanceVertex();
+	meshBuilder.Color3ub(red, green, blue);
+
+	meshBuilder.TexCoord2f( 0, 2, 1);
+	meshBuilder.Position3f(End[0] + ViewUp[0] * GIZMO_AXIS_WIDTH, End[1] + ViewUp[1] * GIZMO_AXIS_WIDTH, End[2] + ViewUp[2] * GIZMO_AXIS_WIDTH);
+	meshBuilder.Color3ub(red, green, blue);
+	meshBuilder.AdvanceVertex();
+
+	meshBuilder.TexCoord2f( 0, 0, 1);
+	meshBuilder.Position3f(Start[0] + ViewUp[0] * GIZMO_AXIS_WIDTH, Start[1] + ViewUp[1] * GIZMO_AXIS_WIDTH, Start[2] + ViewUp[2] * GIZMO_AXIS_WIDTH);
+	meshBuilder.Color3ub(red, green, blue);
+	meshBuilder.AdvanceVertex();
+
+	meshBuilder.End();
+	pMesh->Draw();
+
+	//
+	// Draw the rotate handle.
+	//
+	Start = End;
+	VectorMA(Origin, 0.6, Axis, End);
+	
+	pRender->BeginRenderHitTarget(this, uAxisHandle + GIZMO_HANDLE_ROTATE);
+
+	pRender->BindTexture( g_pRotateHandleTexture );
+	pMesh = pRenderContext->GetDynamicMesh( );
+	meshBuilder.Begin( pMesh, MATERIAL_POLYGON, 4 );
+
+	meshBuilder.TexCoord2f( 0, 0, 0);
+	meshBuilder.Position3f(Start[0] - ViewUp[0] * GIZMO_HANDLE_WIDTH, Start[1] - ViewUp[1] * GIZMO_HANDLE_WIDTH, Start[2] - ViewUp[2] * GIZMO_HANDLE_WIDTH);
+	meshBuilder.Color3ub(red, green, blue);
+	meshBuilder.AdvanceVertex();
+
+	meshBuilder.TexCoord2f( 0, 1, 0);
+	meshBuilder.Position3f(End[0] - ViewUp[0] * GIZMO_HANDLE_WIDTH, End[1] - ViewUp[1] * GIZMO_HANDLE_WIDTH, End[2] - ViewUp[2] * GIZMO_HANDLE_WIDTH);
+	meshBuilder.Color3ub(red, green, blue);
+	meshBuilder.AdvanceVertex();
+
+	meshBuilder.TexCoord2f( 0, 1, 1);
+	meshBuilder.Position3f(End[0] + ViewUp[0] * GIZMO_HANDLE_WIDTH, End[1] + ViewUp[1] * GIZMO_HANDLE_WIDTH, End[2] + ViewUp[2] * GIZMO_HANDLE_WIDTH);
+	meshBuilder.Color3ub(red, green, blue);
+	meshBuilder.AdvanceVertex();
+
+	meshBuilder.TexCoord2f( 0, 0, 1);
+	meshBuilder.Position3f(Start[0] + ViewUp[0] * GIZMO_HANDLE_WIDTH, Start[1] + ViewUp[1] * GIZMO_HANDLE_WIDTH, Start[2] + ViewUp[2] * GIZMO_HANDLE_WIDTH);
+	meshBuilder.Color3ub(red, green, blue);
+	meshBuilder.AdvanceVertex();
+
+	meshBuilder.End();
+	pMesh->Draw();
+
+	pRender->EndRenderHitTarget();
+
+	//
+	// Draw the third segment of the gizmo axis.
+	//
+	Start = End;
+	VectorMA(Origin, 0.75, Axis, End);
+	
+	pRender->BindTexture( g_pAxisTexture );
+	pMesh = pRenderContext->GetDynamicMesh( );
+	meshBuilder.Begin( pMesh, MATERIAL_POLYGON, 4 );
+
+	meshBuilder.TexCoord2f( 0, 0, 0);
+	meshBuilder.Position3f(Start[0] - ViewUp[0] * GIZMO_AXIS_WIDTH, Start[1] - ViewUp[1] * GIZMO_AXIS_WIDTH, Start[2] - ViewUp[2] * GIZMO_AXIS_WIDTH);
+	meshBuilder.Color3ub(red, green, blue);
+	meshBuilder.AdvanceVertex();
+
+	meshBuilder.TexCoord2f( 0, 2, 0);
+	meshBuilder.Position3f(End[0] - ViewUp[0] * GIZMO_AXIS_WIDTH, End[1] - ViewUp[1] * GIZMO_AXIS_WIDTH, End[2] - ViewUp[2] * GIZMO_AXIS_WIDTH);
+	meshBuilder.Color3ub(red, green, blue);
+	meshBuilder.AdvanceVertex();
+
+	meshBuilder.TexCoord2f( 0, 2, 1);
+	meshBuilder.Position3f(End[0] + ViewUp[0] * GIZMO_AXIS_WIDTH, End[1] + ViewUp[1] * GIZMO_AXIS_WIDTH, End[2] + ViewUp[2] * GIZMO_AXIS_WIDTH);
+	meshBuilder.Color3ub(red, green, blue);
+	meshBuilder.AdvanceVertex();
+
+	meshBuilder.TexCoord2f( 0, 0, 1);
+	meshBuilder.Position3f(Start[0] + ViewUp[0] * GIZMO_AXIS_WIDTH, Start[1] + ViewUp[1] * GIZMO_AXIS_WIDTH, Start[2] + ViewUp[2] * GIZMO_AXIS_WIDTH);
+	meshBuilder.Color3ub(red, green, blue);
+	meshBuilder.AdvanceVertex();
+
+	meshBuilder.End();
+	pMesh->Draw();
+
+	//
+	// Draw the translate handle (arrowhead).
+	//
+	Start = End;
+	
+	pRender->BeginRenderHitTarget(this, uAxisHandle + GIZMO_HANDLE_TRANSLATE);
+
+	pRender->BindTexture( g_pTranslateHandleTexture );
+	pMesh = pRenderContext->GetDynamicMesh( );
+	meshBuilder.Begin( pMesh, MATERIAL_TRIANGLES, 1 );
+
+	meshBuilder.TexCoord2f( 0, 0, 0);
+	meshBuilder.Position3f(Start[0] - ViewUp[0] * GIZMO_HANDLE_WIDTH, Start[1] - ViewUp[1] * GIZMO_HANDLE_WIDTH, Start[2] - ViewUp[2] * GIZMO_HANDLE_WIDTH);
+	meshBuilder.Color3ub(red, green, blue);
+	meshBuilder.AdvanceVertex();
+
+	meshBuilder.TexCoord2f( 0, 1, 0.5);
+	meshBuilder.Position3f(EndPoint[0], EndPoint[1], EndPoint[2]);
+	meshBuilder.Color3ub(red, green, blue);
+	meshBuilder.AdvanceVertex();
+
+	meshBuilder.TexCoord2f( 0, 0, 1);
+	meshBuilder.Position3f(Start[0] + ViewUp[0] * GIZMO_HANDLE_WIDTH, Start[1] + ViewUp[1] * GIZMO_HANDLE_WIDTH, Start[2] + ViewUp[2] * GIZMO_HANDLE_WIDTH);
+	meshBuilder.Color3ub(red, green, blue);
+	meshBuilder.AdvanceVertex();
+
+	meshBuilder.End();
+	pMesh->Draw();
+
+	pRender->EndRenderHitTarget();
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+// Input  : *pRender - 
+//-----------------------------------------------------------------------------
+void CGizmo::Render(CRender3D *pRender)
+{
+	Vector XAxis( m_Position[0] + m_fAxisLength, m_Position[1], m_Position[2] );
+	Vector YAxis( m_Position[0], m_Position[1] + m_fAxisLength, m_Position[2] );
+	Vector ZAxis( m_Position[0], m_Position[1], m_Position[2] + m_fAxisLength );
+
+	static BoundBox UniformScaleBox;
+	Vector Mins;
+	Vector Maxs;
+	Mins[0] = m_Position[0] - m_fAxisLength * 0.1;
+	Mins[1] = m_Position[1] - m_fAxisLength * 0.1;
+	Mins[2] = m_Position[2] - m_fAxisLength * 0.1;
+	Maxs[0] = m_Position[0] + m_fAxisLength * 0.1;
+	Maxs[1] = m_Position[1] + m_fAxisLength * 0.1;
+	Maxs[2] = m_Position[2] + m_fAxisLength * 0.1;
+	UniformScaleBox.ResetBounds();
+	UniformScaleBox.UpdateBounds(Mins, Maxs);
+
+	pRender->BeginRenderHitTarget(this, GIZMO_HANDLE_UNIFORM_SCALE);
+	//pRender->RenderBox(Mins, Maxs, BoxType_Solid, 200, 200, 200);
+	pRender->EndRenderHitTarget();
+
+	pRender->SetRenderMode( RENDER_MODE_TEXTURED );
+
+	DrawGizmoAxis(pRender, m_Position, XAxis, 255, 0, 0, GIZMO_AXIS_X);
+	DrawGizmoAxis(pRender, m_Position, YAxis, 0, 255, 0, GIZMO_AXIS_Y);
+	DrawGizmoAxis(pRender, m_Position, ZAxis, 0, 0, 255, GIZMO_AXIS_Z);
+
+	pRender->SetRenderMode( RENDER_MODE_DEFAULT );
+}
+