150 lines
3.3 KiB
C++
Executable File
150 lines
3.3 KiB
C++
Executable File
#include "BrushTool.h"
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#include "UIGlobals.h"
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#include "HFTracer.h"
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#include "NaviCam.h"
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#include "TextureManager.h"
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#include "Camera.h"
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#include "Terrain.h"
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#include "Renderer.h"
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#include "ogl.h"
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#include <list>
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extern CCamera g_Camera;
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extern CTerrain g_Terrain;
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CBrushTool::CBrushTool() : m_BrushSize(1), m_LButtonDown(false), m_RButtonDown(false)
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{
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}
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static void RenderTileOutline(int gx,int gz)
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{
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CMiniPatch* mpatch=g_Terrain.GetTile(gx,gz);
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if (!mpatch) return;
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u32 mapSize=g_Terrain.GetVerticesPerSide();
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CVector3D V[4];
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g_Terrain.CalcPosition(gx,gz,V[0]);
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g_Terrain.CalcPosition(gx+1,gz,V[1]);
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g_Terrain.CalcPosition(gx+1,gz+1,V[2]);
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g_Terrain.CalcPosition(gx,gz+1,V[3]);
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glLineWidth(2);
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glColor4f(0.05f,0.95f,0.1f,0.75f);
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glBegin (GL_LINE_LOOP);
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for(int i = 0; i < 4; i++)
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glVertex3fv(&V[i].X);
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glEnd ();
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glColor4f (0.1f,0.9f,0.15f,0.35f);
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glBegin (GL_QUADS);
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for(i = 0; i < 4; i++)
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glVertex3fv(&V[i].X);
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glEnd ();
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}
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void CBrushTool::OnDraw()
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{
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g_Renderer.SetTexture(0,0);
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glEnable(GL_BLEND);
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glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
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glDepthMask(0);
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int r=m_BrushSize;
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// iterate through selected patches
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for (int j=m_SelectionCentre[1]-r;j<=m_SelectionCentre[1]+r;j++) {
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for (int i=m_SelectionCentre[0]-r;i<=m_SelectionCentre[0]+r;i++) {
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RenderTileOutline(i,j);
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}
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}
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glDepthMask(1);
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glDisable(GL_BLEND);
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}
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void CBrushTool::OnLButtonDown(unsigned int flags,int px,int py)
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{
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m_LButtonDown=true;
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OnTriggerLeft();
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}
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void CBrushTool::OnLButtonUp(unsigned int flags,int px,int py)
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{
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m_LButtonDown=false;
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}
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void CBrushTool::OnRButtonDown(unsigned int flags,int px,int py)
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{
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m_RButtonDown=true;
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OnTriggerRight();
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}
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void CBrushTool::OnRButtonUp(unsigned int flags,int px,int py)
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{
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m_RButtonDown=false;
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}
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/////////////////////////////////////////////////////////////////////////////////////////
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// BuildCameraRay: calculate origin and ray direction of a ray through
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// the pixel (px,py) on the screen
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void CBrushTool::BuildCameraRay(int px,int py,CVector3D& origin,CVector3D& dir)
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{
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// get points on far plane of frustum in camera space
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CCamera& camera=g_NaviCam.GetCamera();
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CVector3D cPts[4];
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camera.GetCameraPlanePoints(camera.GetFarPlane(),cPts);
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// transform to world space
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CVector3D wPts[4];
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for (int i=0;i<4;i++) {
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wPts[i]=camera.m_Orientation.Transform(cPts[i]);
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}
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// get world space position of mouse point
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float dx=float(px)/float(g_Renderer.GetWidth());
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float dz=1-float(py)/float(g_Renderer.GetHeight());
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CVector3D vdx=wPts[1]-wPts[0];
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CVector3D vdz=wPts[3]-wPts[0];
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CVector3D pt=wPts[0]+(vdx*dx)+(vdz*dz);
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// copy origin
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origin=camera.m_Orientation.GetTranslation();
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// build direction
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dir=pt-origin;
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dir.Normalize();
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}
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void CBrushTool::OnMouseMove(unsigned int flags,int px,int py)
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{
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// build camera ray
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CVector3D rayorigin,raydir;
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BuildCameraRay(px,py,rayorigin,raydir);
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// intersect with terrain
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CVector3D ipt;
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CHFTracer hftracer(g_Terrain.GetHeightMap(),g_Terrain.GetVerticesPerSide(),float(CELL_SIZE),HEIGHT_SCALE);
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if (hftracer.RayIntersect(rayorigin,raydir,m_SelectionCentre[0],m_SelectionCentre[1],m_SelectionPoint)) {
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// drag trigger supported?
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if (SupportDragTrigger()) {
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// yes - handle mouse button down state
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if (m_LButtonDown) {
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OnTriggerLeft();
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} else if (m_RButtonDown) {
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OnTriggerRight();
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}
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}
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}
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}
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