Changeset 5612 for trunk/Ohana/src/kapa/graph/bDrawFuncs.c

Timestamp:

Nov 28, 2005, 8:27:19 AM (21 years ago)

Author:

eugene

Message:

added weight and type to lines, defined -noX option

File:

• trunk/Ohana/src/kapa/graph/bDrawFuncs.c (modified) (4 diffs)

trunk/Ohana/src/kapa/graph/bDrawFuncs.c

@@ -71 +71 @@
 }
 
-// use the Bresenham line drawing technique
-void bDrawLine (double x1, double y1, double x2, double y2, int swapcoords) {
+void bDrawTriOpen (double x1, double y1, double x2, double y2, double x3, double y3) {
+
+  bDrawLine (x1, y1, x2, y2);
+  bDrawLine (x2, y2, x3, y3);
+  bDrawLine (x3, y3, x1, y1);
+
+  return;
+}
+
+void bDrawRectOpen (double x1, double y1, double x2, double y2) {
 
   int X1, Y1, X2, Y2;
-  int X, Y, dX, dY;
+
+  if (x1 > x2) SWAP (x1, x2);
+  if (y1 > y2) SWAP (y1, y2);
+
+  X1 = MIN (MAX (ROUND (x1), 0), bBuffer[0].Nx - 1);
+  X2 = MIN (MAX (ROUND (x2), 1), bBuffer[0].Nx);
+
+  Y1 = MIN (MAX (ROUND (y1), 0), bBuffer[0].Ny - 1);
+  Y2 = MIN (MAX (ROUND (y2), 1), bBuffer[0].Ny);
+
+  bDrawLineHorizontal (X1, X2, Y1);
+  bDrawLineHorizontal (X1, X2, Y2);
+  bDrawLineVertical (X1, Y1, Y2);
+  bDrawLineVertical (X2, Y1, Y2);
+  return;
+}
+
+void bDrawRectFill (double x1, double y1, double x2, double y2) {
+
+  int i;
+  int X1, Y1, X2, Y2;
+
+  if (x1 > x2) SWAP (x1, x2);
+  if (y1 > y2) SWAP (y1, y2);
+
+  X1 = MIN (MAX (ROUND (x1), 0), bBuffer[0].Nx - 1);
+  X2 = MIN (MAX (ROUND (x2), 1), bBuffer[0].Nx);
+
+  Y1 = MIN (MAX (ROUND (y1), 0), bBuffer[0].Ny - 1);
+  Y2 = MIN (MAX (ROUND (y2), 0), bBuffer[0].Ny);
+
+  for (i = Y1; i < Y2; i++) {
+    bDrawLineHorizontal (X1, X2, i);
+  } 
+  return;
+}
+
+// identify the quadrant and draw the correct line
+void bDrawLine (double x1, double y1, double x2, double y2) {
+
+  int FlipDirect, FlipCoords;
+  int X1, Y1, X2, Y2, dX, dY;
 
   /* rather than draw the line from float positions, we find the closest
@@ -88 +137 @@
   dY = Y2 - Y1;
 
-  // fprintf (stderr, "(%f,%f) - (%f,%f)\n", x1, y1, x2, y2);
-  if (x1 > x2) {
-    // fprintf (stderr, "flip direct\n");
-    bDrawLine (x2, y2, x1, y1, swapcoords);
-    return;
-  }
-  if (abs(dX) < abs(dY)) {
-    // fprintf (stderr, "flip coords\n");
-    bDrawLine (y1, x1, y2, x2, TRUE);
-    return;
-  }
-
-  /* integer-only Bresenham line-draw version which is fast */
-  {
-    int e, e2;
-
-    Y = Y1;
-    e = 0;
-    for (X = X1; X <= X2; X++) {
-      if (swapcoords) {
-        bDrawPoint (Y,X);
-      } else {
-        bDrawPoint (X,Y);
-      }
-      e += dY;
-      e2 = 2 * e;
-      if (e2 > dX) {
-        Y++;
-        e -= dX;
-      } 
-      if (e2 < -dX) {
-        Y--;
-        e += dX;
-      }
-    }
-  }
-  return;
-}
-
-void bDrawRectOpen (int x1, int y1, int x2, int y2) {
-
-  return;
-}
-
-void bDrawRectFill (int x1, int y1, int x2, int y2) {
-
-  return;
-}
-
-void bDrawTriOpen (int x1, int y1, int x2, int y2, int x3, int y3) {
-
-  return;
-}
-
-void bDrawTriFill (int x1, int y1, int x2, int y2, int x3, int y3) {
-
+  FlipCoords = (abs(dX) < abs(dY));
+  FlipDirect = FlipCoords ? (y1 > y2) : (x1 > x2);
+
+  if (!FlipDirect && !FlipCoords) bDrawLineWeight (X1, Y1, X2, Y2, FALSE);
+  if ( FlipDirect && !FlipCoords) bDrawLineWeight (X2, Y2, X1, Y1, FALSE);
+  if (!FlipDirect &&  FlipCoords) bDrawLineWeight (Y1, X1, Y2, X2, TRUE);
+  if ( FlipDirect &&  FlipCoords) bDrawLineWeight (Y2, X2, Y1, X1, TRUE);
+
+  return;
+}
+
+// draw a series of lines to give the line weight
+void bDrawLineWeight (int X1, int Y1, int X2, int Y2, int swapcoords) {
+
+  int dN, dNs, dNe;
+
+  dNs = -0.5*(bWeight - 1); 
+  /* 0, 0, 0, -1, -1, -2, -2 */
+
+  dNe = +0.5*bWeight + 1; 
+  /* 1, 1, 2, 2, 2, 3, 3 */
+
+  for (dN = dNs; dN < dNe; dN++) {
+    bDrawLineBresen (X1, Y1 + dN, X2, Y2 + dN, swapcoords);
+  }
+  return;
+}
+
+// use the Bresenham line drawing technique
+// integer-only Bresenham line-draw version which is fast
+void bDrawLineBresen (int X1, int Y1, int X2, int Y2, int swapcoords) {
+
+  int X, Y, dX, dY;
+  int e, e2;
+  int N, DashOn;
+
+  dX = X2 - X1;
+  dY = Y2 - Y1;
+
+  DashOn = TRUE;
+
+  Y = Y1;
+  e = 0;
+  for (X = X1, N = 0; X <= X2; X++, N++) {
+    if (bType == 1) { DashOn = (N % 10) < 5; }
+    if (bType == 2) { DashOn = (N % 6) < 3; }
+    if (swapcoords) {
+      if (DashOn) bDrawPoint (Y,X);
+    } else {
+      if (DashOn) bDrawPoint (X,Y);
+    }
+    e += dY;
+    e2 = 2 * e;
+    if (e2 > dX) {
+      Y++;
+      e -= dX;
+    } 
+    if (e2 < -dX) {
+      Y--;
+      e += dX;
+    }
+  }
+  return;
+}
+
+void bDrawLineHorizontal (int X1, int X2, int Y) {
+  
+  int i;
+
+  for (i = X1; i < X2; i++) {
+    bBuffer[0].pixels[Y][i] = bColor;
+  }
+  return;
+}
+
+void bDrawLineVertical (int X, int Y1, int Y2) {
+  
+  int i;
+
+  for (i = Y1; i < Y2; i++) {
+    bBuffer[0].pixels[i][X] = bColor;
+  }
+  return;
+}
+
+void bDrawTriFill (double x1, double y1, double x2, double y2, double x3, double y3) {
+
+  bDrawTriOpen (x1, y1, x2, y2, x3, y3);
   return;
 }
@@ -181 +262 @@
 }
 
+// draw a series of circles to give line weight
+void bDrawCircle (double xc, double yc, double radius) {
+
+  int dN, dNs, dNe;
+
+  dNs = -0.5*(bWeight - 1); 
+  /* 0, 0, 0, -1, -1, -2, -2 */
+
+  dNe = +0.5*bWeight + 1; 
+  /* 1, 1, 2, 2, 2, 3, 3 */
+
+  for (dN = dNs; dN < dNe; dN++) {
+    bDrawCircle (xc, yc, radius + dN);
+  }
+  return;
+}
+
 // draw a pure circle  
-void bDrawCircle (double xc, double yc, double radius) {
+void bDrawCircleSingle (double xc, double yc, double radius) {
 
   int Xc, Yc, Radius;
@@ -206 +304 @@
     bDrawPoint (Xc-y, Yc+x);
     bDrawPoint (Xc-y, Yc-x);
+
+    if (d < 0) {
+      // d = d + 4*x + 6;
+      d = d + 8*x + 4;
+    } else {
+      // d = d + 4*(x-y) + 10;
+      d = d + 8*(x-y) + 8;
+      y--;
+    }
+    x++;
+  }
+}
+
+// draw a pure circle  
+void bDrawCircleFill (double xc, double yc, double radius) {
+
+  int Xc, Yc, Radius;
+  int x, y, d;
+
+  Xc = ROUND(xc);
+  Yc = ROUND(yc);
+  Radius = ROUND(radius);
+
+  x = 0;
+  y = Radius;
+
+  // d = 3 - 2*Radius;
+  d = 5 - 4*radius;
+
+  while (x <= y) {
+    bDrawLineHorizontal (Xc-x, Xc+x, Yc+y);
+    bDrawLineHorizontal (Xc-x, Xc+x, Yc-y);
+    bDrawLineHorizontal (Xc-y, Xc+y, Yc+x);
+    bDrawLineHorizontal (Xc-y, Xc+y, Yc-x);
 
     if (d < 0) {