GuiTexture Canvas

Based on http://www.garagegames.com/community/resources/view/10899 Additional note: to cut down on confusion, the UV returned by collisions when enabling    info.generateTexCoord = true; for a RayInfo info; has been altered to          info.mUVtexCoord from info.texCoord to differentiate it from visually mapped UV storage, retrieval, and manipulation to cut down on false positives when code-tracing.

Engine/source/T3D/fps/guiCrossHairHud.cpp

@@ -30,7 +30,8 @@
 #include "T3D/shapeBase.h"
 #include "gfx/gfxDrawUtil.h"
 #include "console/engineAPI.h"
-
+#include "gui/core/guiTextureCanvas.h"
+#include "T3D/tsStatic.h"
 
 //-----------------------------------------------------------------------------
 /// Vary basic cross hair hud.
@@ -54,6 +55,7 @@ class GuiCrossHairHud : public GuiBitmapCtrl
    GuiCrossHairHud();
 
    void onRender( Point2I, const RectI &);
+   bool testGuiInteraction();
    static void initPersistFields();
    DECLARE_CONOBJECT( GuiCrossHairHud );
    DECLARE_CATEGORY( "Gui Game" );
@@ -110,6 +112,51 @@ void GuiCrossHairHud::initPersistFields()
 
 
 //-----------------------------------------------------------------------------
+bool GuiCrossHairHud::testGuiInteraction()
+
+{
+   bool interacting = false;
+   // Must have a connection and player control object
+   GameConnection* conn = GameConnection::getConnectionToServer();
+   if (!conn)
+      return false;
+   ShapeBase* control = dynamic_cast<ShapeBase*>(conn->getControlObject());
+   if (!control || !(control->getTypeMask() & ObjectMask) || !conn->isFirstPerson())
+      return false;
+
+   // Get control camera info
+   MatrixF cam;
+   Point3F camPos;
+   conn->getControlCameraTransform(0, &cam);
+   cam.getColumn(3, &camPos);
+
+   // Extend the camera vector to create an endpoint for our ray
+   Point3F endPos;
+   cam.getColumn(1, &endPos);
+   endPos *= GuiTextureCanvas::getRayLength();
+   endPos += camPos;
+
+   // Collision info. We're going to be running LOS tests and we
+   // don't want to collide with the control object.
+   static U32 losMask = TerrainObjectType | ShapeBaseObjectType | StaticShapeObjectType;
+   control->disableCollision();
+
+   RayInfo info;
+   info.generateTexCoord = true;
+   if (gClientContainer.castRay(camPos, endPos, losMask, &info)) {
+      // Hit something... but we'll only display health for named
+      // ShapeBase objects.  Could mask against the object type here
+      // and do a static cast if it's a ShapeBaseObjectType, but this
+      // isn't a performance situation, so I'll just use dynamic_cast.
+      if (TSStatic * obj = dynamic_cast<TSStatic*>(info.object))
+         interacting = GuiTextureCanvas::castRay(obj, camPos, endPos, &info);
+   }
+
+   // Restore control object collision
+   control->enableCollision();
+   GuiTextureCanvas::setInteract(interacting, &info);
+   return interacting;
+}
 
 void GuiCrossHairHud::onRender(Point2I offset, const RectI &updateRect)
 {
@@ -121,6 +168,10 @@ void GuiCrossHairHud::onRender(Point2I offset, const RectI &updateRect)
    if (!control || !(control->getTypeMask() & ObjectMask) || !conn->isFirstPerson())
       return;
 
+   //if we're interacting with a gui, skip rendering
+   if (testGuiInteraction())
+      return;
+
    // Parent render.
    Parent::onRender(offset,updateRect);
 
@@ -138,7 +189,7 @@ void GuiCrossHairHud::onRender(Point2I offset, const RectI &updateRect)
 
    // Collision info. We're going to be running LOS tests and we
    // don't want to collide with the control object.
-   static U32 losMask = TerrainObjectType | ShapeBaseObjectType;
+   static U32 losMask = TerrainObjectType | ShapeBaseObjectType | StaticShapeObjectType;
    control->disableCollision();
 
    RayInfo info;
@@ -148,11 +199,13 @@ void GuiCrossHairHud::onRender(Point2I offset, const RectI &updateRect)
       // and do a static cast if it's a ShapeBaseObjectType, but this
       // isn't a performance situation, so I'll just use dynamic_cast.
       if (ShapeBase* obj = dynamic_cast<ShapeBase*>(info.object))
+      {
          if (obj->getShapeName()) {
             offset.x = updateRect.point.x + updateRect.extent.x / 2;
             offset.y = updateRect.point.y + updateRect.extent.y / 2;
             drawDamage(offset + mDamageOffset, obj->getDamageValue(), 1);
          }
+      }
    }
 
    // Restore control object collision

Engine/source/T3D/groundPlane.cpp

@@ -238,7 +238,7 @@ bool GroundPlane::castRay( const Point3F& start, const Point3F& end, RayInfo* in
       info->object = this;
       info->distance = 0;
       info->faceDot = 0;
-      info->texCoord.set( 0, 0 );
+      info->mUVtexCoord.set(0, 0);
       return true;
    }
 

Engine/source/collision/collision.h

@@ -53,7 +53,7 @@ struct Collision
 
    // If generateTexCoord is set this will either be invalid (-1, -1)
    // or a value in texture space (assuming 0..1 UV mapping)
-   Point2F texCoord;
+   Point2F mUVtexCoord;
 
    // Face and Face dot are currently only set by the extrudedPolyList
    // clipper.  Values are otherwise undefined.
@@ -65,7 +65,7 @@ struct Collision
       object( NULL ),
       material( NULL ),
       generateTexCoord(false),
-      texCoord(-1.0f, -1.0f)
+      mUVtexCoord(-1.0f, -1.0f)
    {
    }
 };

Engine/source/gui/core/guiCanvas.cpp

@@ -42,11 +42,14 @@
 
 #include "gfx/gfxInit.h"
 #include "core/util/journal/process.h"
+#include "gui/core/guiTextureCanvas.h" 
 
 #ifdef TORQUE_GFX_STATE_DEBUG
 #include "gfx/gfxDebugStateTracker.h"
 #endif
 
+#include "GuiTextureCanvas.h"
+
 IMPLEMENT_CONOBJECT(GuiCanvas);
 
 ConsoleDocClass( GuiCanvas,
@@ -1712,6 +1715,9 @@ void GuiCanvas::renderFrame(bool preRenderOnly, bool bufferSwap /* = true */)
 
    bool beginSceneRes = GFX->beginScene();
 
+   // Update the offscreen gui texture canvases.
+   GuiTextureCanvas::updateCanvases();
+
    PROFILE_END();
 
    // Can't render if waiting for device to reset.