WINTERMUTE: *transform as pointer in transform_tools

4 files changed, 27 insertions, 21 deletions

diff --git a/engines/wintermute/graphics/transform_tools.cpp b/engines/wintermute/graphics/transform_tools.cpp
index f0a092a31b..2388b88236 100644
--- a/engines/wintermute/graphics/transform_tools.cpp
+++ b/engines/wintermute/graphics/transform_tools.cpp
@@ -43,7 +43,10 @@ namespace Wintermute {
 		return newPoint;
 	}
 
-	Rect32 TransformTools::newRect (Rect32 oldRect, TransformStruct transform, Point32 *newHotspot) {
+	Rect32 TransformTools::newRect (Rect32 oldRect, TransformStruct *transform, Point32 *newHotspot) {
+
+		assert (transform);
+
 		Point32 nw(oldRect.left, oldRect.top);
 		Point32 ne(oldRect.right, oldRect.top);
 		Point32 sw(oldRect.left, oldRect.bottom);
@@ -51,10 +54,10 @@ namespace Wintermute {
 		
 		FloatPoint nw1, ne1, sw1, se1;
 
-		nw1 = transformPoint(nw - transform._hotspot, transform._angle, transform._zoom);
-		ne1 = transformPoint(ne - transform._hotspot, transform._angle, transform._zoom);
-		sw1 = transformPoint(sw - transform._hotspot, transform._angle, transform._zoom);
-		se1 = transformPoint(se - transform._hotspot, transform._angle, transform._zoom);
+		nw1 = transformPoint(nw - transform->_hotspot, transform->_angle, transform->_zoom);
+		ne1 = transformPoint(ne - transform->_hotspot, transform->_angle, transform->_zoom);
+		sw1 = transformPoint(sw - transform->_hotspot, transform->_angle, transform->_zoom);
+		se1 = transformPoint(se - transform->_hotspot, transform->_angle, transform->_zoom);
 		
 		float top = MIN(nw1.y, MIN(ne1.y, MIN(sw1.y, se1.y)));
 		float bottom = MAX(nw1.y, MAX(ne1.y, MAX(sw1.y, se1.y)));
@@ -65,10 +68,10 @@ namespace Wintermute {
 		newHotspot->y = -floor(top);
 		newHotspot->x = -floor(left);
 
-		res.top = floor(top) + transform._hotspot.y;
-		res.bottom = ceil(bottom) + transform._hotspot.y; 
-		res.left = floor(left) + transform._hotspot.x;
-		res.right = ceil(right) + transform._hotspot.x;
+		res.top = floor(top) + transform->_hotspot.y;
+		res.bottom = ceil(bottom) + transform->_hotspot.y; 
+		res.left = floor(left) + transform->_hotspot.x;
+		res.right = ceil(right) + transform->_hotspot.x;
 
 		return res;
 	}
diff --git a/engines/wintermute/graphics/transform_tools.h b/engines/wintermute/graphics/transform_tools.h
index fbc0653e64..ae60e5ab32 100644
--- a/engines/wintermute/graphics/transform_tools.h
+++ b/engines/wintermute/graphics/transform_tools.h
@@ -41,7 +41,7 @@ public:
 	 * and, as a side-effect, "newHotspot" will tell you where the hotspot will
 	 * have ended up in the new rect, for centering.
 	 */
-	static Rect32 newRect (Rect32 oldRect, TransformStruct transform, Point32 *newHotspot);	
+	static Rect32 newRect (Rect32 oldRect, TransformStruct *transform, Point32 *newHotspot);	
 };
 } // end of namespace Wintermute
 #endif
diff --git a/engines/wintermute/graphics/transparent_surface.cpp b/engines/wintermute/graphics/transparent_surface.cpp
index 5606d41ae6..1139b08199 100644
--- a/engines/wintermute/graphics/transparent_surface.cpp
+++ b/engines/wintermute/graphics/transparent_surface.cpp
@@ -496,7 +496,10 @@ Common::Rect TransparentSurface::blit(Graphics::Surface &target, int posX, int p
 	return retSize;
 }
 
-TransparentSurface *TransparentSurface::rotate(TransformStruct transform) const {
+TransparentSurface *TransparentSurface::rotate(TransformStruct *transform) const {
+	
+	assert (transform);
+	
 	Point32 newHotspot;
 	Common::Rect srcRect(0, 0, (int16)w, (int16)h);
 	Rect32 rect = TransformTools::newRect(Rect32 (srcRect), transform, &newHotspot);
@@ -510,7 +513,7 @@ TransparentSurface *TransparentSurface::rotate(TransformStruct transform) const
 
 	target->create((uint16)dstW, (uint16)dstH, this->format);
 
-	uint32 invAngle = (360 - transform._angle) % 360;
+	uint32 invAngle = (360 - transform->_angle) % 360;
 	float invCos = cos(invAngle * M_PI / 180.0);
 	float invSin = sin(invAngle * M_PI / 180.0);
 	float targX;
@@ -522,11 +525,11 @@ TransparentSurface *TransparentSurface::rotate(TransformStruct transform) const
 				int x1 = x - newHotspot.x;
 				int y1 = y - newHotspot.y;
 
-				targX = ((x1 * invCos - y1 * invSin)) * 100.0 / transform._zoom.x + srcRect.left; 
-				targY = ((x1 * invSin + y1 * invCos)) * 100.0 / transform._zoom.y + srcRect.top; 
+				targX = ((x1 * invCos - y1 * invSin)) * 100.0 / transform->_zoom.x + srcRect.left; 
+				targY = ((x1 * invSin + y1 * invCos)) * 100.0 / transform->_zoom.y + srcRect.top; 
 				
-				targX += transform._hotspot.x;
-				targY += transform._hotspot.y;
+				targX += transform->_hotspot.x;
+				targY += transform->_hotspot.y;
 			
 				copyPixelNearestNeighbor(targX, targY, x, y, srcRect, dstRect, this, target); 
 			}
@@ -537,11 +540,11 @@ TransparentSurface *TransparentSurface::rotate(TransformStruct transform) const
 				int x1 = x - newHotspot.x;
 				int y1 = y - newHotspot.y;
 
-				targX = ((x1 * invCos - y1 * invSin)) * 100.0 / transform._zoom.x + srcRect.left; 
-				targY = ((x1 * invSin + y1 * invCos)) * 100.0 / transform._zoom.y + srcRect.top; 
+				targX = ((x1 * invCos - y1 * invSin)) * 100.0 / transform->_zoom.x + srcRect.left; 
+				targY = ((x1 * invSin + y1 * invCos)) * 100.0 / transform->_zoom.y + srcRect.top; 
 				
-				targX += transform._hotspot.x;
-				targY += transform._hotspot.y;
+				targX += transform->_hotspot.x;
+				targY += transform->_hotspot.y;
 			
 				copyPixelBilinear(targX, targY, x, y, srcRect, dstRect, this, target); 
 			}
diff --git a/engines/wintermute/graphics/transparent_surface.h b/engines/wintermute/graphics/transparent_surface.h
index f9486d1b25..c01b10d96f 100644
--- a/engines/wintermute/graphics/transparent_surface.h
+++ b/engines/wintermute/graphics/transparent_surface.h
@@ -111,7 +111,7 @@ struct TransparentSurface : public Graphics::Surface {
 	void applyColorKey(uint8 r, uint8 g, uint8 b, bool overwriteAlpha = false);
 
 	TransparentSurface *scale (uint16 newWidth, uint16 newHeight) const;
-	TransparentSurface *rotate(TransformStruct transform) const;  
+	TransparentSurface *rotate(TransformStruct *transform) const;  
 	static byte *_lookup;
 	static void destroyLookup();
 private: