Merge pull request #433 from eightyeight/recast-pull-navigation

Recast part 3: wrapper classes

Engine/source/navigation/duDebugDrawTorque.cpp

@@ -0,0 +1,244 @@
+//-----------------------------------------------------------------------------
+// Copyright (c) 2013 GarageGames, LLC
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to
+// deal in the Software without restriction, including without limitation the
+// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+// sell copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+// IN THE SOFTWARE.
+//-----------------------------------------------------------------------------
+
+#include "torqueRecast.h"
+#include "duDebugDrawTorque.h"
+
+#include "gfx/gfxDevice.h"
+#include "gfx/primBuilder.h"
+#include "gfx/gfxStateBlock.h"
+
+/// @class duDebugDrawTorque
+/// This class uses the primitive builder (gfx/primBuild.h) to render navmeshes
+/// and other Recast data. To facilitate the primbuilder's requirement to know
+/// the number of vertices to render beforehand, this class stores all vertices
+/// in a buffer of its own, then passes on that known-size buffer.
+/// This means that you only need to call the duDebugDraw functions when your
+/// data changes. At other times, you can cache the duDebugDrawTorque object
+/// and call its render() method, which actually renders its buffered data.
+
+duDebugDrawTorque::duDebugDrawTorque()
+{
+   mOverrideColor = 0;
+   mOverride = false;
+   mGroup = 0;
+}
+
+duDebugDrawTorque::~duDebugDrawTorque()
+{
+   clear();
+}
+
+void duDebugDrawTorque::depthMask(bool state)
+{
+   mDesc.setZReadWrite(state, state);
+}
+
+void duDebugDrawTorque::texture(bool state)
+{
+}
+
+/// Begin drawing primitives.
+/// @param prim [in] primitive type to draw, one of rcDebugDrawPrimitives.
+/// @param size [in] size of a primitive, applies to point size and line width only.
+void duDebugDrawTorque::begin(duDebugDrawPrimitives prim, float size)
+{
+   mCurrColor = -1;
+   mQuadsMode = false;
+   mVertCount = 0;
+   mPrimType = 0;
+   switch(prim)
+   {
+   case DU_DRAW_POINTS: mPrimType = GFXPointList;    break;
+   case DU_DRAW_LINES:  mPrimType = GFXLineList;     break;
+   case DU_DRAW_TRIS:   mPrimType = GFXTriangleList; break;
+   case DU_DRAW_QUADS:  mPrimType = GFXTriangleList;
+                        mQuadsMode = true;           break;
+   }
+   mBuffers.push_back(Buffer(mPrimType));
+   mBuffers.last().group = mGroup;
+   mDesc.setCullMode(GFXCullNone);
+   mDesc.setBlend(true);
+}
+
+void duDebugDrawTorque::beginGroup(U32 group)
+{
+   mGroup = group;
+}
+
+/// Submit a vertex
+/// @param pos [in] position of the verts.
+/// @param color [in] color of the verts.
+void duDebugDrawTorque::vertex(const float* pos, unsigned int color)
+{
+   vertex(pos[0], pos[1], pos[2], color);
+}
+
+/// Submit a vertex
+/// @param x,y,z [in] position of the verts.
+/// @param color [in] color of the verts.
+void duDebugDrawTorque::vertex(const float x, const float y, const float z, unsigned int color)
+{
+   if(mQuadsMode)
+   {
+      if(mVertCount == 3)
+      {
+         _vertex(x, -z, y, color);
+         _vertex(mStore[0][0], mStore[0][1], mStore[0][2], color);
+         _vertex(mStore[1][0], mStore[1][1], mStore[1][2], color);
+         _vertex(mStore[1][0], mStore[1][1], mStore[1][2], color);
+         _vertex(mStore[2][0], mStore[2][1], mStore[2][2], color);
+         _vertex(x, -z, y, color);
+         mVertCount = 0;
+      }
+      else
+      {
+         mStore[mVertCount][0] = x;
+         mStore[mVertCount][1] = -z;
+         mStore[mVertCount][2] = y;
+         mVertCount++;
+      }
+   }
+   else 
+   {
+      _vertex(x, -z, y, color);
+   }
+}
+
+/// Submit a vertex
+/// @param pos [in] position of the verts.
+/// @param color [in] color of the verts.
+void duDebugDrawTorque::vertex(const float* pos, unsigned int color, const float* uv)
+{
+   vertex(pos[0], pos[1], pos[2], color);
+}
+
+/// Submit a vertex
+/// @param x,y,z [in] position of the verts.
+/// @param color [in] color of the verts.
+void duDebugDrawTorque::vertex(const float x, const float y, const float z, unsigned int color, const float u, const float v)
+{
+   vertex(x, y, z, color);
+}
+
+/// Push a vertex onto the buffer.
+void duDebugDrawTorque::_vertex(const float x, const float y, const float z, unsigned int color)
+{
+   // Use override color if we must.
+   //if(mOverride)
+      //color = mOverrideColor;
+   if(mCurrColor != color || !mBuffers.last().buffer.size())
+   {
+      U8 r, g, b, a;
+      // Convert color integer to components.
+      rcCol(color, r, g, b, a);
+      mBuffers.last().buffer.push_back(Instruction(r, g, b, a));
+      mCurrColor = color;
+   }
+   // Construct vertex data.
+   mBuffers.last().buffer.push_back(Instruction(x, y, z));
+}
+
+/// End drawing primitives.
+void duDebugDrawTorque::end()
+{
+}
+
+void duDebugDrawTorque::overrideColor(unsigned int col)
+{
+   mOverride = true;
+   mOverrideColor = col;
+}
+
+void duDebugDrawTorque::cancelOverride()
+{
+   mOverride = false;
+}
+
+void duDebugDrawTorque::renderBuffer(Buffer &b)
+{
+   PrimBuild::begin(b.primType, b.buffer.size());
+   Vector<Instruction> &buf = b.buffer;
+   for(U32 i = 0; i < buf.size(); i++)
+   {
+      switch(buf[i].type)
+      {
+      case Instruction::POINT:
+         PrimBuild::vertex3f(buf[i].data.point.x,
+                             buf[i].data.point.y,
+                             buf[i].data.point.z);
+         break;
+
+      case Instruction::COLOR:
+         if(mOverride)
+            break;
+         PrimBuild::color4i(buf[i].data.color.r,
+                            buf[i].data.color.g,
+                            buf[i].data.color.b,
+                            buf[i].data.color.a);
+         break;
+      }
+   }
+   PrimBuild::end();
+}
+
+void duDebugDrawTorque::render()
+{
+   GFXStateBlockRef sb = GFX->createStateBlock(mDesc);
+   GFX->setStateBlock(sb);
+   // Use override color for all rendering.
+   if(mOverride)
+   {
+      U8 r, g, b, a;
+      rcCol(mOverrideColor, r, g, b, a);
+      PrimBuild::color4i(r, g, b, a);
+   }
+   for(U32 b = 0; b < mBuffers.size(); b++)
+   {
+      renderBuffer(mBuffers[b]);
+   }
+}
+
+void duDebugDrawTorque::renderGroup(U32 group)
+{
+   GFXStateBlockRef sb = GFX->createStateBlock(mDesc);
+   GFX->setStateBlock(sb);
+   // Use override color for all rendering.
+   if(mOverride)
+   {
+      U8 r, g, b, a;
+      rcCol(mOverrideColor, r, g, b, a);
+      PrimBuild::color4i(r, g, b, a);
+   }
+   for(U32 b = 0; b < mBuffers.size(); b++)
+   {
+      if(mBuffers[b].group == group)
+         renderBuffer(mBuffers[b]);
+   }
+}
+
+void duDebugDrawTorque::clear()
+{
+   for(U32 b = 0; b < mBuffers.size(); b++)
+      mBuffers[b].buffer.clear();
+   mBuffers.clear();
+}