From 022119cc3148d63f6504ca340dca2eb115033d3a Mon Sep 17 00:00:00 2001
From: lecoanet
Date: Mon, 26 Nov 2001 10:27:20 +0000
Subject: Traitement du clipping non rectangulaire. Factorisation du calcul des
 gradients.

---
 generic/Rectangle.c | 81 ++++++++++++++++++-----------------------------------
 1 file changed, 28 insertions(+), 53 deletions(-)

(limited to 'generic/Rectangle.c')

diff --git a/generic/Rectangle.c b/generic/Rectangle.c
index 1c78971..536303a 100644
--- a/generic/Rectangle.c
+++ b/generic/Rectangle.c
@@ -433,66 +433,36 @@ ComputeCoordinates(Item		item,
    * by the gradient axis.
    */
   if (!ZnGradientFlat(rect->fill_color)) {
-    if (rect->fill_color->type == ZN_AXIAL_GRADIENT) {
-      int		angle = rect->fill_color->g.angle;
-      ZnTransfo	*transfo1, *transfo2;
-      ZnPoint	p1[4];
-      ZnBBox	bbox;
-    
+    ZnPoly	shape;
+
+      if (rect->fill_color->type == ZN_AXIAL_GRADIENT) {
+      int	angle = rect->fill_color->g.angle;
+
       if ((angle != 0) && (angle != 90) && (angle != 180) && (angle != 270)) {
 	if (!rect->grad_geo) {
 	  rect->grad_geo = ZnMalloc(4*sizeof(ZnPoint));
 	}
-	transfo1 = ZnTransfoNew();
-	transfo2 = ZnTransfoNew();
-	ZnRotateDeg(transfo1, angle);
-	ZnRotateDeg(transfo2, -angle);
-	ZnTransformPoints(transfo1, p, p1, 4);
-	ResetBBox(&bbox);
-	AddPointsToBBox(&bbox, p1, 4);
-	p1[0] = bbox.orig;
-	p1[2] = bbox.corner;
-	p1[1].x = p1[2].x;
-	p1[1].y = p1[0].y;
-	p1[3].x = p1[0].x;
-	p1[3].y = p1[2].y;
-	ZnTransfoSetIdentity(transfo1);
-	ZnTransfoCompose(transfo1, transfo2, wi->current_transfo);
-	ZnTransformPoints(transfo1, p1, rect->grad_geo, 4);
-	ZnTransfoFree(transfo1);
-	ZnTransfoFree(transfo2);
+	POLY_CONTOUR1(&shape, p, 4);
+	ComputeAxialGradient(wi, &shape, angle, rect->grad_geo);
       }
       else {
 	goto free_ggeo;
       }
+
     }
     else if (rect->fill_color->type == ZN_RADIAL_GRADIENT) {
-      ZnReal	dist, new, x, y, fact;
-      ZnPoint	p1[4];
-      ZnBBox	*bbox = &item->item_bounding_box;
-      ZnTransfo	*transfo1;
-      
       if (!rect->grad_geo) {
-	rect->grad_geo = ZnMalloc(2*sizeof(ZnPoint));
+	rect->grad_geo = ZnMalloc(4*sizeof(ZnPoint));
       }
-      ZnTransformPoint(wi->current_transfo, &rect->fill_color->g.p, &rect->grad_geo[0]);
-      transfo1 = ZnTransfoNew();
-      ZnTranslate(transfo1, -rect->grad_geo[0].x, -rect->grad_geo[0].y);
-      fact = (bbox->corner.x-bbox->orig.x)/(bbox->corner.y-bbox->orig.y);
-      ZnScale(transfo1, 1.0, fact);
-      ZnTransformPoints(transfo1, rect->dev, p1, 4);
-      dist = 0.0;
-      for (i = 0; i < 4; i++) {
-	x = p1[i].x;
-	y = p1[i].y;
-	new = x*x+y*y;
-	if (new > dist) {
-	  dist = new;
-	}
+      POLY_CONTOUR1(&shape, rect->dev, 4);
+      ComputeRadialGradient(wi, &shape, &item->item_bounding_box,
+			    &rect->fill_color->g.p, rect->grad_geo);
+    }
+    else if (rect->fill_color->type == ZN_PATH_GRADIENT) {
+      if (!rect->grad_geo) {
+	rect->grad_geo = ZnMalloc(4*sizeof(ZnPoint));
       }
-      rect->grad_geo[1].x = sqrt(dist);
-      rect->grad_geo[1].y = rect->grad_geo[1].x / fact;
-      ZnTransfoFree(transfo1);
+      ZnTransformPoint(wi->current_transfo, &rect->fill_color->g.p, &rect->grad_geo[0]);
     }
   }
   else {
@@ -722,9 +692,12 @@ Render(Item	item)
 
     if (!ZnGradientFlat(rect->fill_color)) {
       ZnBool	fast = (rect->fill_color->type == ZN_AXIAL_GRADIENT) && !rect->grad_geo;
+      ZnPoly	poly;
+
+      POLY_CONTOUR1(&poly, rect->dev, 4);
       RenderGradient(wi, rect->fill_color,
-		     fast ? NULL : RectRenderCB,
-		     rect, fast ? rect->dev : rect->grad_geo);
+		     fast ? NULL: RectRenderCB, rect,
+		     fast ? rect->dev : rect->grad_geo, &poly);
     }
     else {
       if (rect->tile != ZnUnspecifiedImage) { /* Fill tiled */
@@ -881,12 +854,13 @@ PostScript(Item			item,
  *
  * GetClipVertices --
  *	Get the clipping shape.
+ *	Never ever call TRI_FREE on the tristrip returned by GetClipVertices.
  *
  **********************************************************************************
  */
 static ZnBool
-GetClipVertices(Item	item,
-		ZnPoly	*poly)
+GetClipVertices(Item		item,
+		ZnTriStrip	*tristrip)
 {
   RectangleItem	rect = (RectangleItem) item;
   ZnPoint	*points;
@@ -894,7 +868,7 @@ GetClipVertices(Item	item,
   if (ISSET(rect->flags, ALIGNED_BIT)) {
     ZnListAssertSize(item->wi->work_pts, 2);
     points = (ZnPoint *) ZnListArray(item->wi->work_pts);
-    POLY_CONTOUR1(poly, points, 2);
+    TRI_STRIP1(tristrip, points, 2);
   
     if (rect->dev[0].x < rect->dev[2].x) {
       points[0].x = rect->dev[0].x;
@@ -914,7 +888,7 @@ GetClipVertices(Item	item,
     }
   }
   else {
-    POLY_CONTOUR1(poly, rect->dev, 4);
+    TRI_STRIP1(tristrip, rect->dev, 4);
   }
 
   return ISSET(rect->flags, ALIGNED_BIT);
@@ -1013,6 +987,7 @@ static ItemClassStruct RECTANGLE_ITEM_CLASS = {
   NULL,			/* GetFieldSet */
   NULL,			/* GetAnchor */
   GetClipVertices,
+  NULL,			/* GetContours */
   Coords,
   NULL,			/* InsertChars */
   NULL,			/* DeleteChars */
-- 
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