From 768d633a3d42504c2536470ba98aead8453bbe3b Mon Sep 17 00:00:00 2001
From: danij <danij@dengine.net>
Date: Fri, 20 Apr 2012 06:11:48 +0100
Subject: [PATCH] Map Renderer|Cleanup: Removed some redundant temporary
 vectors

---
 doomsday/engine/portable/src/edit_bias.c      |  9 +++------
 doomsday/engine/portable/src/rend_fakeradio.c | 10 +++-------
 doomsday/engine/portable/src/rend_halo.c      |  9 +++------
 doomsday/engine/portable/src/rend_sky.c       | 15 ++++++---------
 4 files changed, 15 insertions(+), 28 deletions(-)

diff --git a/doomsday/engine/portable/src/edit_bias.c b/doomsday/engine/portable/src/edit_bias.c
index bdabd8ac85..fa7c4ce713 100644
--- a/doomsday/engine/portable/src/edit_bias.c
+++ b/doomsday/engine/portable/src/edit_bias.c
@@ -955,17 +955,12 @@ static void SBE_HueOffset(double angle, float *offset)
 
 static void SBE_DrawHue(void)
 {
-    vec3f_t eye;
     vec3f_t center, off, off2;
     float steps = 32, inner = 10, outer = 30, s;
     double angle;
     float color[4], sel[4], hue, saturation;
     int i;
 
-    eye[0] = vOrigin[VX];
-    eye[1] = vOrigin[VY];
-    eye[2] = vOrigin[VZ];
-
     glDisable(GL_DEPTH_TEST);
     glDisable(GL_CULL_FACE);
 
@@ -978,7 +973,9 @@ static void SBE_DrawHue(void)
 
     // The origin of the circle.
     for(i = 0; i < 3; ++i)
-        center[i] = eye[i] + hueOrigin[i] * hueDistance;
+    {
+        center[i] = (float)(vOrigin[i]) + hueOrigin[i] * hueDistance;
+    }
 
     // Draw the circle.
     glBegin(GL_QUAD_STRIP);
diff --git a/doomsday/engine/portable/src/rend_fakeradio.c b/doomsday/engine/portable/src/rend_fakeradio.c
index 7643e9fd82..49affac022 100644
--- a/doomsday/engine/portable/src/rend_fakeradio.c
+++ b/doomsday/engine/portable/src/rend_fakeradio.c
@@ -1546,21 +1546,17 @@ void Rend_RadioBspLeafEdges(BspLeaf* bspLeaf)
 static void drawPoint(coord_t pos[3], int radius, const float color[4])
 {
     const viewdata_t* viewData = R_ViewData(viewPlayer - ddPlayers);
-    coord_t viewPos[3], viewToCenter[3], finalPos[3], leftOff[3], rightOff[3];
+    coord_t viewToCenter[3], finalPos[3], leftOff[3], rightOff[3];
     float scale, radX, radY;
     int i;
 
-    viewPos[VX] = vOrigin[VX];
-    viewPos[VY] = vOrigin[VY];
-    viewPos[VZ] = vOrigin[VZ];
-
     // viewSideVec is to the left.
     for(i = 0; i < 3; ++i)
     {
-        leftOff[i] = viewData->upVec[i] + viewData->sideVec[i];
+        leftOff[i]  = viewData->upVec[i] + viewData->sideVec[i];
         rightOff[i] = viewData->upVec[i] - viewData->sideVec[i];
 
-        viewToCenter[i] = pos[i] - viewPos[i];
+        viewToCenter[i] = pos[i] - vOrigin[i];
     }
 
     scale = (float) V3d_DotProductf(viewToCenter, viewData->frontVec) /
diff --git a/doomsday/engine/portable/src/rend_halo.c b/doomsday/engine/portable/src/rend_halo.c
index 03df4eab6f..f96a9866cf 100644
--- a/doomsday/engine/portable/src/rend_halo.c
+++ b/doomsday/engine/portable/src/rend_halo.c
@@ -146,7 +146,6 @@ boolean H_RenderHalo(coord_t x, coord_t y, coord_t z, float size, DGLuint tex,
                      boolean viewRelativeRotate)
 {
     int i, k;
-    float viewPos[3];
     float viewToCenter[3], mirror[3], normalViewToCenter[3];
     float leftOff[3], rightOff[3], center[3], radius;
     float haloPos[3];
@@ -194,12 +193,10 @@ boolean H_RenderHalo(coord_t x, coord_t y, coord_t z, float size, DGLuint tex,
 
     // Calculate the mirrored position.
     // Project viewtocenter vector onto viewSideVec.
-    viewPos[VX] = vOrigin[VX];
-    viewPos[VY] = vOrigin[VY];
-    viewPos[VZ] = vOrigin[VZ];
-
     for(i = 0; i < 3; ++i)
-        normalViewToCenter[i] = viewToCenter[i] = center[i] - viewPos[i];
+    {
+        normalViewToCenter[i] = viewToCenter[i] = center[i] - (float)(vOrigin[i]);
+    }
     V3f_Normalize(normalViewToCenter);
 
     // Calculate the dimming factor for secondary flares.
diff --git a/doomsday/engine/portable/src/rend_sky.c b/doomsday/engine/portable/src/rend_sky.c
index 8dc5ea0362..c16f05ecf9 100644
--- a/doomsday/engine/portable/src/rend_sky.c
+++ b/doomsday/engine/portable/src/rend_sky.c
@@ -99,7 +99,6 @@ static void renderSkyModels(void)
 {
     rendmodelparams_t params;
     skymodel_t* sky;
-    float pos[3];
     float inter;
     int i, c;
 
@@ -124,19 +123,17 @@ static void renderSkyModels(void)
             continue;
         }
 
-        // Calculate the coordinates for the model.
-        pos[0] = vOrigin[VX] * -sky->def->coordFactor[0];
-        pos[1] = vOrigin[VY] * -sky->def->coordFactor[1];
-        pos[2] = vOrigin[VZ] * -sky->def->coordFactor[2];
-
         inter = (sky->maxTimer > 0 ? sky->timer / (float) sky->maxTimer : 0);
 
         memset(&params, 0, sizeof(params));
 
+        // Calculate the coordinates for the model.
+        params.origin[VX] = vOrigin[VX] * -sky->def->coordFactor[VX];
+        params.origin[VY] = vOrigin[VZ] * -sky->def->coordFactor[VZ];
+        params.origin[VZ] = vOrigin[VY] * -sky->def->coordFactor[VY];
+        params.gzt = params.origin[VZ];
         params.distance = 1;
-        params.origin[VX] = pos[0];
-        params.origin[VY] = pos[2];
-        params.origin[VZ] = params.gzt = pos[1];
+
         params.extraYawAngle = params.yawAngleOffset = sky->def->rotate[0];
         params.extraPitchAngle = params.pitchAngleOffset = sky->def->rotate[1];
         params.inter = inter;