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