--- /dev/null
+/*
+GenSurf plugin for GtkRadiant
+Copyright (C) 2001 David Hyde, Loki software and qeradiant.com
+
+This library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Lesser General Public
+License as published by the Free Software Foundation; either
+version 2.1 of the License, or (at your option) any later version.
+
+This library is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+Lesser General Public License for more details.
+
+You should have received a copy of the GNU Lesser General Public
+License along with this library; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+*/
+
+#include <math.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "gensurf.h"
+
+#undef ISOMETRIC
+
+extern double backface;
+extern double dh, dv;
+extern double xmin,xmax,ymin,ymax,zmin,zmax;
+
+double SF, SFG; // Graphics scale factors
+double XLo, XHi, YLo, YHi, ZLo, ZHi;
+double yaw,roll;
+double elevation,azimuth;
+int cxChar = 10, cyChar = 16;
+int X0, Y0;
+int X0G, Y0G;
+
+static Rect rcCoord; // where X= Y= is drawn
+static Rect rcGrid; // rectangle within rcLower that forms the border of the grid, plus
+ // a 3 pixel slop.
+static Rect rcLower; // lower half of window, where plan view is drawn
+static Rect rcUpper; // upper half or entire window, where isometric projection is drawn
+
+void vertex_selected ();
+void texfont_init ();
+void texfont_write (const char *text, int l, int t);
+
+#define PEN_GRID { \
+ g_GLTable.m_pfn_qglLineWidth (1); \
+ g_GLTable.m_pfn_qglColor3f (0, 1, 0); \
+ g_GLTable.m_pfn_qglDisable (GL_LINE_STIPPLE); }
+
+#define PEN_RED { \
+ g_GLTable.m_pfn_qglLineWidth (2); \
+ g_GLTable.m_pfn_qglColor3f (1, 0, 0); \
+ g_GLTable.m_pfn_qglDisable (GL_LINE_STIPPLE); }
+
+#define PEN_DASH { \
+ g_GLTable.m_pfn_qglLineWidth (1); \
+ g_GLTable.m_pfn_qglColor3f (0, 1, 0); \
+ g_GLTable.m_pfn_qglLineStipple (1, 0xF0F0); \
+ g_GLTable.m_pfn_qglEnable (GL_LINE_STIPPLE); }
+
+#define DRAW_QUAD(rc,r,g,b) { \
+ g_GLTable.m_pfn_qglBegin (GL_QUADS); \
+ g_GLTable.m_pfn_qglColor3f (0,1,0); \
+ g_GLTable.m_pfn_qglVertex2i (rc.left-1, rc.bottom); \
+ g_GLTable.m_pfn_qglVertex2i (rc.right, rc.bottom); \
+ g_GLTable.m_pfn_qglVertex2i (rc.right, rc.top+1); \
+ g_GLTable.m_pfn_qglVertex2i (rc.left-1, rc.top+1); \
+ g_GLTable.m_pfn_qglColor3f (r,g,b); \
+ g_GLTable.m_pfn_qglVertex2i (rc.left, rc.bottom+1); \
+ g_GLTable.m_pfn_qglVertex2i (rc.right-1, rc.bottom+1); \
+ g_GLTable.m_pfn_qglVertex2i (rc.right-1, rc.top); \
+ g_GLTable.m_pfn_qglVertex2i (rc.left, rc.top); \
+ g_GLTable.m_pfn_qglEnd (); }
+
+
+#ifndef ISOMETRIC
+double D=65536.;
+double ct[3],st[3];
+double Hhi, Hlo, Vhi, Vlo;
+#endif
+
+#define SUBDIVS 6
+
+
+void ShowPreview ()
+{
+ if (Preview)
+ {
+ if (g_pWndPreview == NULL)
+ CreateViewWindow ();
+ gtk_widget_show (g_pWndPreview);
+
+ UpdatePreview (true);
+ }
+ else
+ gtk_widget_hide (g_pWndPreview);
+}
+
+static void draw_preview ()
+{
+ int width = g_pPreviewWidget->allocation.width, height = g_pPreviewWidget->allocation.height;
+
+ g_GLTable.m_pfn_qglClearColor (0, 0, 0, 1);
+ g_GLTable.m_pfn_qglViewport (0, 0, width, height);
+ g_GLTable.m_pfn_qglMatrixMode (GL_PROJECTION);
+ g_GLTable.m_pfn_qglLoadIdentity ();
+ g_GLTable.m_pfn_qglOrtho (0, width, 0, height, -1, 1);
+ g_GLTable.m_pfn_qglClear (GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
+
+ // ^Fishman - Antializing for the preview window.
+ if (Antialiasing)
+ {
+ g_GLTable.m_pfn_qglEnable(GL_BLEND);
+ g_GLTable.m_pfn_qglBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+ g_GLTable.m_pfn_qglEnable(GL_LINE_SMOOTH);
+ }
+ else
+ {
+ g_GLTable.m_pfn_qglDisable(GL_BLEND);
+ g_GLTable.m_pfn_qglDisable(GL_LINE_SMOOTH);
+ }
+
+ texfont_init ();
+
+ if (!ValidSurface ())
+ return;
+
+ rcUpper.left = 0;
+ rcUpper.right = width;
+ rcUpper.bottom = 0;
+ rcUpper.top = height;
+ rcLower.left = 0;
+ rcLower.right = width;
+ rcLower.bottom = 0;
+ rcLower.top = height;
+
+ if (VertexMode)
+ {
+ rcUpper.bottom = rcUpper.top/2;
+ DrawPreview (rcUpper);
+ g_GLTable.m_pfn_qglBegin (GL_LINES);
+ g_GLTable.m_pfn_qglVertex2i (rcUpper.left, rcUpper.bottom);
+ g_GLTable.m_pfn_qglVertex2i (rcUpper.right, rcUpper.bottom);
+ g_GLTable.m_pfn_qglEnd ();
+ rcLower.top = rcUpper.bottom-1;
+ DrawGrid (rcLower);
+ rcCoord.left = rcLower.left;
+ rcCoord.right = rcLower.right;
+ rcCoord.bottom = rcLower.bottom;
+ rcCoord.top = rcLower.top;
+ rcCoord.top = rcCoord.bottom+cyChar;
+ rcCoord.right = rcCoord.left + 15*cxChar;
+ rcGrid.left = X0G - 3;
+ rcGrid.bottom = Y0G - 3;
+ rcGrid.right = X0G + (int)(SFG*(Hur-Hll)) + 3;
+ rcGrid.top = Y0G + (int)(SFG*(Vur-Vll)) + 3;
+ }
+ else
+ DrawPreview (rcUpper);
+}
+
+static gint expose (GtkWidget *widget, GdkEventExpose *event, gpointer data)
+{
+ if (event->count > 0)
+ return TRUE;
+
+ if (!g_UIGtkTable.m_pfn_glwidget_make_current (g_pPreviewWidget))
+ {
+ g_FuncTable.m_pfnSysPrintf ("GtkGenSurf: glMakeCurrent failed\n");
+ return TRUE;
+ }
+
+ draw_preview ();
+
+ g_UIGtkTable.m_pfn_glwidget_swap_buffers (g_pPreviewWidget);
+ g_GLTable.m_pfn_QE_CheckOpenGLForErrors ();
+
+ return TRUE;
+}
+
+static void button_press (GtkWidget *widget, GdkEventButton *event, gpointer data)
+{
+ Point pt = { (long)event->x, widget->allocation.height - (long)event->y };
+ bool Selected;
+ double x,y;
+ int i, j, k, ks;
+ int i0, i1, j0, j1;
+
+ if ((!VertexMode) || (event->button != 1))
+ return;
+
+ if (!PtInRect (&rcGrid,pt))
+ {
+ gdk_beep ();
+ return;
+ }
+
+ x = Hll + (pt.x-X0G)/SFG;
+ y = Vur - (pt.y-Y0G)/SFG;
+ i = (int)(floor( (x-Hll)/dh - 0.5) + 1);
+ j = (int)(floor( (y-Vll)/dv - 0.5) + 1);
+ if (i < 0 || i > NH || j < 0 || j > NV)
+ {
+ gdk_beep ();
+ return;
+ }
+
+ if(!CanEdit(i,j))
+ {
+ gdk_beep ();
+ return;
+ }
+
+ // Control key pressed - add this point, or remove it if already selected
+ if ((event->state & GDK_CONTROL_MASK) != 0)
+ {
+ Selected = FALSE;
+ if (NumVerticesSelected)
+ {
+ for (k=0; k<NumVerticesSelected && !Selected; k++)
+ {
+ if(Vertex[k].i == i && Vertex[k].j == j)
+ {
+ Selected = TRUE;
+ ks = k;
+ }
+ }
+ }
+
+ // Already selected - unselect it.
+ if (Selected)
+ {
+ if (ks < NumVerticesSelected)
+ {
+ for (k=ks;k<NumVerticesSelected-1;k++)
+ {
+ Vertex[k].i = Vertex[k+1].i;
+ Vertex[k].j = Vertex[k+1].j;
+ }
+ NumVerticesSelected--;
+ }
+ }
+ else
+ {
+ Vertex[NumVerticesSelected].i = i;
+ Vertex[NumVerticesSelected].j = j;
+ NumVerticesSelected++;
+ }
+ }
+ else if ((event->state & GDK_SHIFT_MASK) != 0)
+ {
+ if (NumVerticesSelected)
+ {
+ NumVerticesSelected = 1;
+ i0 = min(Vertex[0].i, i);
+ i1 = max(Vertex[0].i, i);
+ j0 = min(Vertex[0].j, j);
+ j1 = max(Vertex[0].j, j);
+ for(i=i0; i<=i1; i++)
+ {
+ for(j=j0; j<=j1; j++)
+ {
+ if(i==0 && j==0 ) continue;
+ if(i==NH && j==0 ) continue;
+ if(i==0 && j==NV) continue;
+ if(i==NH && j==NV) continue;
+ if(i != Vertex[0].i || j != Vertex[0].j)
+ {
+ Vertex[NumVerticesSelected].i = i;
+ Vertex[NumVerticesSelected].j = j;
+ NumVerticesSelected++;
+ }
+ }
+ }
+ }
+ else
+ {
+ Vertex[0].i = i;
+ Vertex[0].j = j;
+ NumVerticesSelected = 1;
+ }
+ }
+ else
+ {
+ Vertex[0].i = i;
+ Vertex[0].j = j;
+ NumVerticesSelected = 1;
+ }
+
+ vertex_selected ();
+}
+
+static void motion (GtkWidget *widget, GdkEventMotion *event, gpointer data)
+{
+ Point pt = { (long)event->x, widget->allocation.height - (long)event->y };
+
+ if (!VertexMode)
+ return;
+
+ if (!g_UIGtkTable.m_pfn_glwidget_make_current (g_pPreviewWidget))
+ {
+ g_FuncTable.m_pfnSysPrintf ("GtkGenSurf: glMakeCurrent failed\n");
+ return;
+ }
+
+ g_GLTable.m_pfn_qglEnable (GL_SCISSOR_TEST);
+ g_GLTable.m_pfn_qglScissor (rcCoord.left, rcCoord.bottom, rcCoord.right-rcCoord.left,
+ rcCoord.top-rcCoord.bottom);
+ g_GLTable.m_pfn_qglClear (GL_COLOR_BUFFER_BIT);
+
+ if (PtInRect(&rcGrid,pt))
+ {
+ GdkCursor *cursor = gdk_cursor_new (GDK_CROSS);
+ gdk_window_set_cursor (g_pWndPreview->window, cursor);
+ gdk_cursor_unref (cursor);
+
+ char Text[32];
+ int x, y;
+
+ x = (int)(Hll + (pt.x-X0G)/SFG);
+ y = (int)(Vur - (pt.y-Y0G)/SFG);
+ switch(Plane)
+ {
+ case PLANE_XZ0:
+ case PLANE_XZ1:
+ sprintf(Text," x=%d, z=%d ",(int)(floor(x-0.5)+1.) ,(int)(floor(y-0.5)+1.) );
+ break;
+ case PLANE_YZ0:
+ case PLANE_YZ1:
+ sprintf(Text," y=%d, z=%d ",(int)(floor(x-0.5)+1.) ,(int)(floor(y-0.5)+1.) );
+ break;
+ default:
+ sprintf(Text," x=%d, y=%d ",(int)(floor(x-0.5)+1.) ,(int)(floor(y-0.5)+1.) );
+ }
+
+ texfont_write (Text, rcCoord.left, rcCoord.top);
+ }
+ else
+ {
+ gdk_window_set_cursor (g_pWndPreview->window, NULL);
+ }
+
+ g_UIGtkTable.m_pfn_glwidget_swap_buffers (g_pPreviewWidget);
+ g_GLTable.m_pfn_QE_CheckOpenGLForErrors ();
+ g_GLTable.m_pfn_qglDisable (GL_SCISSOR_TEST);
+}
+
+static gint preview_close (GtkWidget *widget, gpointer data)
+{
+ gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (g_object_get_data (G_OBJECT (g_pWnd), "main_preview")), FALSE);
+ return TRUE;
+}
+
+static void preview_focusout (GtkSpinButton *spin, GdkEventFocus *event, double *data)
+{
+ *data = DegreesToRadians ((double)(gtk_spin_button_get_value_as_int (spin) % 360));
+ UpdatePreview (false);
+}
+
+static gint doublevariable_spinfocusout(GtkWidget* widget, GdkEventFocus* event, gpointer data)
+{
+ preview_focusout(GTK_SPIN_BUTTON(widget), event, reinterpret_cast<double*>(data));
+ return FALSE;
+}
+
+static void preview_spin (GtkAdjustment *adj, double *data)
+{
+ *data = DegreesToRadians (adj->value);
+ UpdatePreview (false);
+}
+
+void CreateViewWindow ()
+{
+ GtkWidget *dlg, *vbox, *hbox, *label, *spin, *frame;
+ GtkObject *adj;
+
+#ifndef ISOMETRIC
+ elevation = PI/6.;
+ azimuth = PI/6.;
+#endif
+
+ g_pWndPreview = dlg = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+ gtk_window_set_title (GTK_WINDOW (dlg), "GtkGenSurf Preview");
+ gtk_signal_connect (GTK_OBJECT (dlg), "delete_event", GTK_SIGNAL_FUNC (preview_close), NULL);
+ gtk_signal_connect (GTK_OBJECT (dlg), "destroy", GTK_SIGNAL_FUNC (gtk_widget_destroy), NULL);
+ gtk_window_set_transient_for (GTK_WINDOW (dlg), GTK_WINDOW (g_pWnd));
+ gtk_window_set_default_size (GTK_WINDOW (dlg), 300, 400);
+
+ vbox = gtk_vbox_new (FALSE, 5);
+ gtk_widget_show (vbox);
+ gtk_container_add (GTK_CONTAINER (dlg), vbox);
+
+#ifndef ISOMETRIC
+ hbox = gtk_hbox_new (TRUE, 5);
+ gtk_widget_show (hbox);
+ gtk_box_pack_start (GTK_BOX (vbox), hbox, FALSE, TRUE, 0);
+ gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
+
+ label = gtk_label_new ("Elevation");
+ gtk_widget_show (label);
+ gtk_misc_set_alignment (GTK_MISC (label), 1, 0.5);
+ gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, TRUE, 0);
+
+ adj = gtk_adjustment_new (30, -90, 90, 1, 10, 0);
+ gtk_signal_connect (adj, "value_changed", GTK_SIGNAL_FUNC (preview_spin), &elevation);
+ spin = gtk_spin_button_new (GTK_ADJUSTMENT (adj), 1, 0);
+ gtk_widget_show (spin);
+ gtk_box_pack_start (GTK_BOX (hbox), spin, FALSE, TRUE, 0);
+ g_signal_connect (G_OBJECT (spin), "focus_out_event", G_CALLBACK (doublevariable_spinfocusout), &elevation);
+
+ adj = gtk_adjustment_new (30, 0, 359, 1, 10, 0);
+ gtk_signal_connect (adj, "value_changed", GTK_SIGNAL_FUNC (preview_spin), &azimuth);
+ spin = gtk_spin_button_new (GTK_ADJUSTMENT (adj), 1, 0);
+ gtk_widget_show (spin);
+ gtk_spin_button_set_wrap (GTK_SPIN_BUTTON (spin), TRUE);
+ gtk_box_pack_end (GTK_BOX (hbox), spin, FALSE, TRUE, 0);
+
+ label = gtk_label_new ("Azimuth");
+ gtk_widget_show (label);
+ gtk_misc_set_alignment (GTK_MISC (label), 1, 0.5);
+ gtk_box_pack_end (GTK_BOX (hbox), label, FALSE, TRUE, 0);
+ g_signal_connect (G_OBJECT (spin), "focus_out_event", G_CALLBACK (doublevariable_spinfocusout), &azimuth);
+#endif
+
+ frame = gtk_frame_new (NULL);
+ gtk_widget_show (frame);
+ gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_IN);
+ gtk_box_pack_start (GTK_BOX (vbox), frame, TRUE, TRUE, 0);
+
+ g_pPreviewWidget = g_UIGtkTable.m_pfn_glwidget_new (FALSE, NULL);
+
+ gtk_widget_set_events (g_pPreviewWidget, GDK_EXPOSURE_MASK|GDK_BUTTON_PRESS_MASK|GDK_POINTER_MOTION_MASK);
+ gtk_signal_connect (GTK_OBJECT (g_pPreviewWidget), "expose_event", GTK_SIGNAL_FUNC (expose), NULL);
+ gtk_signal_connect (GTK_OBJECT (g_pPreviewWidget), "motion_notify_event", GTK_SIGNAL_FUNC (motion), NULL);
+ gtk_signal_connect (GTK_OBJECT (g_pPreviewWidget), "button_press_event",
+ GTK_SIGNAL_FUNC (button_press), NULL);
+
+ gtk_widget_show (g_pPreviewWidget);
+ gtk_container_add (GTK_CONTAINER (frame), g_pPreviewWidget);
+
+ if (Preview)
+ gtk_widget_show (g_pWndPreview);
+
+ UpdatePreview (true);
+}
+
+//=============================================================
+/* DrawPreview */
+void DrawPreview (Rect rc)
+{
+#define COSXA 0.8660254037844
+#define SINXA 0.5
+#define COSYA 0.8660254037844
+#define SINYA 0.5
+
+ double L;
+ double x,y;
+ int i, j;
+ Point pt[8];
+ XYZ v[8];
+ char axis[3][2] = {"X","Y","Z"};
+
+#ifndef ISOMETRIC
+ evaluate();
+#endif
+
+ XLo = xmin;
+ XHi = xmax;
+ YLo = ymin;
+ YHi = ymax;
+ ZLo = zmin;
+ ZHi = zmax;
+ switch (Plane)
+ {
+ case PLANE_XY1:
+ ZHi = backface;
+ break;
+ case PLANE_XZ0:
+ YLo = backface;
+ break;
+ case PLANE_XZ1:
+ YHi = backface;
+ break;
+ case PLANE_YZ0:
+ XLo = backface;
+ break;
+ case PLANE_YZ1:
+ XHi = backface;
+ break;
+ default:
+ ZLo = backface;
+ }
+
+
+
+ GetScaleFactor(rc);
+ //PEN_GRID
+ g_GLTable.m_pfn_qglLineWidth (1);
+ g_GLTable.m_pfn_qglColor3f (0, 1, 0);
+ g_GLTable.m_pfn_qglDisable (GL_LINE_STIPPLE);
+
+ if (Decimate > 0 && (Game != QUAKE3 || UsePatches==0) )
+ {
+ XYZ *vv;
+
+ vv = (XYZ *) malloc(gNumNodes * sizeof(XYZ));
+ for(i=0; i<gNumNodes; i++)
+ {
+ for(j=0; j<3; j++)
+ vv[i].p[j] = (double)(gNode[i].p[j]);
+ project(&vv[i]);
+ }
+
+ for(i=0; i<gNumTris; i++)
+ {
+ for(j=0; j<3; j++)
+ Scale(rc,vv[gTri[i].v[j]],&pt[j]);
+
+ g_GLTable.m_pfn_qglBegin (GL_LINE_STRIP);
+ g_GLTable.m_pfn_qglVertex2i (pt[0].x, pt[0].y);
+ g_GLTable.m_pfn_qglVertex2i (pt[1].x, pt[1].y);
+ g_GLTable.m_pfn_qglVertex2i (pt[2].x, pt[2].y);
+ g_GLTable.m_pfn_qglVertex2i (pt[0].x, pt[0].y);
+ g_GLTable.m_pfn_qglEnd ();
+ }
+ free(vv);
+ }
+ else if (Game==QUAKE3 && UsePatches!=0)
+ {
+ int axis, ii, jj, k;
+ float u, v;
+ XYZ uv[3][3];
+ XYZ Ctrl[3],out;
+
+ switch (Plane)
+ {
+ case PLANE_XY0:
+ case PLANE_XY1:
+ k = 2;
+ break;
+ case PLANE_XZ0:
+ case PLANE_XZ1:
+ k = 1;
+ break;
+ default:
+ k = 0;
+ }
+ for(i=0; i<NH; i+=2)
+ {
+ for(j=0; j<NV; j+=2)
+ {
+ VectorCopy(xyz[i ][j ].p,uv[0][0].p);
+ VectorCopy(xyz[i+1][j ].p,uv[1][0].p);
+ VectorCopy(xyz[i+2][j ].p,uv[2][0].p);
+ VectorCopy(xyz[i ][j+1].p,uv[0][1].p);
+ VectorCopy(xyz[i+1][j+1].p,uv[1][1].p);
+ VectorCopy(xyz[i+2][j+1].p,uv[2][1].p);
+ VectorCopy(xyz[i ][j+2].p,uv[0][2].p);
+ VectorCopy(xyz[i+1][j+2].p,uv[1][2].p);
+ VectorCopy(xyz[i+2][j+2].p,uv[2][2].p);
+ uv[1][0].p[k] = (4*xyz[i+1][j ].p[k] - xyz[i ][j ].p[k] - xyz[i+2][j ].p[k])/2;
+ uv[0][1].p[k] = (4*xyz[i ][j+1].p[k] - xyz[i ][j ].p[k] - xyz[i ][j+2].p[k])/2;
+ uv[2][1].p[k] = (4*xyz[i+2][j+1].p[k] - xyz[i+2][j ].p[k] - xyz[i+2][j+2].p[k])/2;
+ uv[1][2].p[k] = (4*xyz[i+1][j+2].p[k] - xyz[i ][j+2].p[k] - xyz[i+2][j+2].p[k])/2;
+ uv[1][1].p[k] = (16*xyz[i+1][j+1].p[k] -
+ xyz[i ][j ].p[k] - 2*xyz[i+1][j ].p[k] - xyz[i+2][j ].p[k] -
+ 2*xyz[i ][j+1].p[k] -2*xyz[i+2][j+1].p[k] -
+ xyz[i ][j+2].p[k] - 2*xyz[i+1][j+2].p[k] - xyz[i+2][j+2].p[k] )/4;
+
+ for(ii=0; ii<=SUBDIVS; ii++)
+ {
+ if(ii==0 || ii==SUBDIVS/2 || ii==SUBDIVS)
+ {
+ g_GLTable.m_pfn_qglLineWidth (1);
+ g_GLTable.m_pfn_qglColor3f (0, 1, 0);
+ g_GLTable.m_pfn_qglDisable (GL_LINE_STIPPLE);
+ // PEN_GRID
+ }
+ else
+ {
+ g_GLTable.m_pfn_qglLineWidth (1);
+ g_GLTable.m_pfn_qglColor3f (0, 1, 0);
+ g_GLTable.m_pfn_qglLineStipple (1, 0xF0F0);
+ g_GLTable.m_pfn_qglEnable (GL_LINE_STIPPLE);
+ // PEN_DASH
+ }
+
+ u = (float)(ii)/(float)(SUBDIVS);
+ for(jj=0; jj<3; jj++)
+ {
+ for(axis=0; axis<3; axis++)
+ {
+ float a, b, c;
+ float qA, qB, qC;
+ a = (float)uv[0][jj].p[axis];
+ b = (float)uv[1][jj].p[axis];
+ c = (float)uv[2][jj].p[axis];
+ qA = a - 2 * b + c;
+ qB = 2 * b - 2 * a;
+ qC = a;
+ Ctrl[jj].p[axis] = qA * u * u + qB * u + qC;
+ }
+ }
+ VectorCopy(Ctrl[0].p,out.p);
+ project(&out);
+ Scale(rc,out,&pt[0]);
+ g_GLTable.m_pfn_qglBegin (GL_LINE_STRIP);
+ g_GLTable.m_pfn_qglVertex2i (pt[0].x, pt[0].y);
+ for(jj=1; jj<=SUBDIVS; jj++)
+ {
+ v = (float)(jj)/(float)(SUBDIVS);
+ for (axis = 0 ; axis < 3 ; axis++)
+ {
+ float a, b, c;
+ float qA, qB, qC;
+ a = (float)Ctrl[0].p[axis];
+ b = (float)Ctrl[1].p[axis];
+ c = (float)Ctrl[2].p[axis];
+ qA = a - 2 * b + c;
+ qB = 2 * b - 2 * a;
+ qC = a;
+ out.p[axis] = qA * v * v + qB * v + qC;
+ }
+ project(&out);
+ Scale(rc,out,&pt[0]);
+ g_GLTable.m_pfn_qglVertex2i (pt[0].x, pt[0].y);
+ }
+ g_GLTable.m_pfn_qglEnd ();
+ }
+ for(jj=0; jj<=SUBDIVS; jj++)
+ {
+ if(jj==0 || jj==SUBDIVS/2 || jj==SUBDIVS)
+ {
+ g_GLTable.m_pfn_qglLineWidth (1);
+ g_GLTable.m_pfn_qglColor3f (0, 1, 0);
+ g_GLTable.m_pfn_qglDisable (GL_LINE_STIPPLE);
+ // PEN_GRID
+ }
+ else
+ {
+ g_GLTable.m_pfn_qglLineWidth (1);
+ g_GLTable.m_pfn_qglColor3f (0, 1, 0);
+ g_GLTable.m_pfn_qglLineStipple (1, 0xF0F0);
+ g_GLTable.m_pfn_qglEnable (GL_LINE_STIPPLE);
+ // PEN_DASH
+ }
+
+ v = (float)(jj)/(float)(SUBDIVS);
+ for(ii=0; ii<3; ii++)
+ {
+ for(axis=0; axis<3; axis++)
+ {
+ float a, b, c;
+ float qA, qB, qC;
+ a = (float)uv[ii][0].p[axis];
+ b = (float)uv[ii][1].p[axis];
+ c = (float)uv[ii][2].p[axis];
+ qA = a - 2 * b + c;
+ qB = 2 * b - 2 * a;
+ qC = a;
+ Ctrl[ii].p[axis] = qA * v * v + qB * v + qC;
+ }
+ }
+ VectorCopy(Ctrl[0].p,out.p);
+ project(&out);
+ Scale(rc,out,&pt[0]);
+ g_GLTable.m_pfn_qglBegin (GL_LINE_STRIP);
+ g_GLTable.m_pfn_qglVertex2i (pt[0].x, pt[0].y);
+ for(ii=1; ii<=SUBDIVS; ii++)
+ {
+ u = (float)(ii)/(float)(SUBDIVS);
+ for (axis = 0 ; axis < 3 ; axis++)
+ {
+ float a, b, c;
+ float qA, qB, qC;
+ a = (float)Ctrl[0].p[axis];
+ b = (float)Ctrl[1].p[axis];
+ c = (float)Ctrl[2].p[axis];
+ qA = a - 2 * b + c;
+ qB = 2 * b - 2 * a;
+ qC = a;
+ out.p[axis] = qA * u * u + qB * u + qC;
+ }
+ project(&out);
+ Scale(rc,out,&pt[0]);
+ g_GLTable.m_pfn_qglVertex2i (pt[0].x, pt[0].y);
+ }
+ g_GLTable.m_pfn_qglEnd ();
+ }
+ }
+ }
+ }
+ else
+ {
+ for(i=0; i<=NH; i++)
+ {
+ Scale(rc,xyz[i][0],&pt[0]);
+ g_GLTable.m_pfn_qglBegin (GL_LINE_STRIP);
+ g_GLTable.m_pfn_qglVertex2i (pt[0].x, pt[0].y);
+ for(j=1; j<=NV; j++)
+ {
+ Scale(rc,xyz[i][j],&pt[0]);
+ g_GLTable.m_pfn_qglVertex2i (pt[0].x, pt[0].y);
+ }
+ g_GLTable.m_pfn_qglEnd ();
+ }
+ for(j=0; j<=NV; j++)
+ {
+ Scale(rc,xyz[0][j],&pt[0]);
+ g_GLTable.m_pfn_qglBegin (GL_LINE_STRIP);
+ g_GLTable.m_pfn_qglVertex2i (pt[0].x, pt[0].y);
+ for(i=1; i<=NH; i++)
+ {
+ Scale(rc,xyz[i][j],&pt[0]);
+ g_GLTable.m_pfn_qglVertex2i (pt[0].x, pt[0].y);
+ }
+ g_GLTable.m_pfn_qglEnd ();
+ }
+ }
+
+ if(Game!=QUAKE3 || UsePatches==0)
+ {
+ // Draw lines from corners to base, and lines around base
+ for(i=0; i<=NH; i+=NH)
+ {
+ for(j=0; j<=NV; j+=NV)
+ {
+ VectorCopy(xyz[i][j].p, v[0].p);
+ switch(Plane)
+ {
+ case PLANE_XZ0:
+ case PLANE_XZ1:
+ v[0].p[1] = backface;
+ break;
+ case PLANE_YZ0:
+ case PLANE_YZ1:
+ v[0].p[0] = backface;
+ break;
+ default:
+ v[0].p[2] = backface;
+ }
+ Scale(rc,xyz[i][j],&pt[0]);
+#ifndef ISOMETRIC
+ project(&v[0]);
+#endif
+ Scale(rc,v[0],&pt[1]);
+ g_GLTable.m_pfn_qglBegin (GL_LINE_STRIP);
+ g_GLTable.m_pfn_qglVertex2i (pt[0].x, pt[0].y);
+ g_GLTable.m_pfn_qglVertex2i (pt[1].x, pt[1].y);
+ g_GLTable.m_pfn_qglEnd ();
+ }
+ }
+ VectorCopy(xyz[ 0][ 0].p, v[0].p);
+ VectorCopy(xyz[NH][ 0].p, v[1].p);
+ VectorCopy(xyz[NH][NV].p, v[2].p);
+ VectorCopy(xyz[ 0][NV].p, v[3].p);
+ switch(Plane)
+ {
+ case PLANE_XZ0:
+ case PLANE_XZ1:
+ v[0].p[1] = backface;;
+ v[1].p[1] = v[0].p[1];
+ v[2].p[1] = v[0].p[1];
+ v[3].p[1] = v[0].p[1];
+ break;
+ case PLANE_YZ0:
+ case PLANE_YZ1:
+ v[0].p[0] = backface;
+ v[1].p[0] = v[0].p[0];
+ v[2].p[0] = v[0].p[0];
+ v[3].p[0] = v[0].p[0];
+ break;
+ default:
+ v[0].p[2] = backface;
+ v[1].p[2] = v[0].p[2];
+ v[2].p[2] = v[0].p[2];
+ v[3].p[2] = v[0].p[2];
+ }
+#ifndef ISOMETRIC
+ project(&v[3]);
+#endif
+ Scale(rc,v[3],&pt[0]);
+ g_GLTable.m_pfn_qglBegin (GL_LINE_STRIP);
+ g_GLTable.m_pfn_qglVertex2i (pt[0].x, pt[0].y);
+ for(i=0; i<3; i++)
+ {
+#ifndef ISOMETRIC
+ project(&v[i]);
+#endif
+ Scale(rc,v[i],&pt[1]);
+ g_GLTable.m_pfn_qglVertex2i (pt[1].x, pt[1].y);
+ }
+ g_GLTable.m_pfn_qglVertex2i (pt[0].x, pt[0].y);
+ g_GLTable.m_pfn_qglEnd ();
+ }
+
+ g_GLTable.m_pfn_qglLineWidth (1);
+ g_GLTable.m_pfn_qglColor3f (0, 1, 0);
+ g_GLTable.m_pfn_qglDisable (GL_LINE_STIPPLE);
+
+#ifdef ISOMETRIC
+ // Draw small depiction of coordinate axes
+ pt[0].x = rc.right - cxChar - cxChar/2 - cyChar;
+ pt[0].y = rc.bottom - cyChar/2 - cxChar/2;
+ pt[1].x = pt[0].x + (int)(cyChar*COSXA);
+ pt[1].y = pt[0].y - (int)(cyChar*SINXA);
+ MoveToEx(hdc,pt[0].x,pt[0].y,NULL);
+ LineTo(hdc,pt[1].x,pt[1].y);
+ SetTextAlign(hdc,TA_LEFT | TA_TOP);
+ TextOut(hdc,pt[1].x,pt[1].y-cyChar/2,"X",1);
+ pt[1].x = pt[0].x - (int)(cyChar*COSYA);
+ pt[1].y = pt[0].y - (int)(cyChar*SINYA);
+ MoveToEx(hdc,pt[0].x,pt[0].y,NULL);
+ LineTo(hdc,pt[1].x,pt[1].y);
+ SetTextAlign(hdc,TA_RIGHT | TA_TOP);
+ TextOut(hdc,pt[1].x,pt[1].y-cyChar/2,"Y",1);
+ pt[1].x = pt[0].x;
+ pt[1].y = pt[0].y - cyChar;
+ MoveToEx(hdc,pt[0].x,pt[0].y,NULL);
+ LineTo(hdc,pt[1].x,pt[1].y);
+ SetTextAlign(hdc,TA_CENTER | TA_BOTTOM);
+ TextOut(hdc,pt[1].x,pt[1].y,"Z",1);
+#else
+ L = 2*(double)cyChar/SF;
+ v[0].p[0] = 0.;
+ v[0].p[1] = 0.;
+ v[0].p[2] = 0.;
+ v[1].p[0] = L;
+ v[1].p[1] = 0.;
+ v[1].p[2] = 0.;
+ v[2].p[0] = 0.;
+ v[2].p[1] = L;
+ v[2].p[2] = 0.;
+ v[3].p[0] = 0.;
+ v[3].p[1] = 0.;
+ v[3].p[2] = L;
+ for(i=0; i<=3; i++)
+ {
+ project(&v[i]);
+ Scale(rc,v[i],&pt[i]);
+ }
+ for(i=1; i<=3; i++)
+ {
+ pt[i].x += -pt[0].x + rc.right - 2*cyChar;
+ pt[i].y += -pt[0].y + rc.bottom + 2*cyChar;
+ }
+ pt[0].x = rc.right - 2*cyChar;
+ pt[0].y = rc.bottom + 2*cyChar;
+
+ for(i=1; i<=3; i++)
+ {
+ g_GLTable.m_pfn_qglBegin (GL_LINES);
+ g_GLTable.m_pfn_qglVertex2i (pt[0].x, pt[0].y);
+ g_GLTable.m_pfn_qglVertex2i (pt[i].x, pt[i].y);
+ g_GLTable.m_pfn_qglEnd ();
+ texfont_write (axis[i-1], pt[i].x-cxChar/2,pt[i].y+cyChar/2);
+ }
+#endif
+
+ // Draw player model's bounding box in red to give a sense of scale
+ // PEN_RED
+ g_GLTable.m_pfn_qglLineWidth (2);
+ g_GLTable.m_pfn_qglColor3f (1, 0, 0);
+ g_GLTable.m_pfn_qglDisable (GL_LINE_STIPPLE);
+
+ switch(Plane)
+ {
+ case PLANE_XY1:
+ v[0].p[0] = xyz[NH/2][NV/2].p[0] + PlayerBox[Game].x[0];
+ v[0].p[1] = xyz[NH/2][NV/2].p[1] + PlayerBox[Game].y[0];
+ v[0].p[2] = zmin - PlayerBox[Game].z[0] - 32;
+ break;
+ case PLANE_XZ0:
+ v[0].p[0] = (xmax+xmin)/2 + PlayerBox[Game].x[0];
+ v[0].p[1] = ymax+64;
+ v[0].p[2] = zmin;
+ break;
+ case PLANE_XZ1:
+ v[0].p[0] = (xmax+xmin)/2 + PlayerBox[Game].x[0];
+ v[0].p[1] = ymin-64;
+ v[0].p[2] = zmin;
+ break;
+ case PLANE_YZ0:
+ v[0].p[0] = xmax+64;
+ v[0].p[1] = (ymax+ymin)/2 + PlayerBox[Game].y[0];
+ v[0].p[2] = zmin;
+ break;
+ case PLANE_YZ1:
+ v[0].p[0] = xmin-64;
+ v[0].p[1] = (ymax+ymin)/2 + PlayerBox[Game].y[0];
+ v[0].p[2] = zmin;
+ break;
+ default:
+ // Put player on a node. For patches, put on an even numbered node.
+ if(Game==QUAKE3 && UsePatches!=0)
+ {
+ if(NH > 2)
+ x = Hll + dh * (int)(NH/2 + 1);
+ else
+ x = Hll + dh * (int)(NH/2);
+ if(NV > 2)
+ y = Vll + dv * (int)(NV/2 + 1);
+ else
+ y = Vll + dv * (int)(NV/2);
+ }
+ else
+ {
+ if(NH > 1)
+ x = Hll + dh * (int)(NH/2);
+ else
+ x = Hll + dh/2;
+ if(NV > 1)
+ y = Vll + dv * (int)(NV/2);
+ else
+ y = Vll + dv/2;
+ }
+// x = (Hll+Hur)/2.;
+// y = (Vll+Vur)/2.;
+ v[0].p[0] = x + PlayerBox[Game].x[0];
+ v[0].p[1] = y + PlayerBox[Game].y[0];
+ v[0].p[2] = PlayerStartZ(x,y) + PlayerBox[Game].z[0] + 8; // add 8 cuz I'm a pessimist
+ }
+ v[1].p[0] = v[0].p[0] + PlayerBox[Game].x[1] - PlayerBox[Game].x[0];
+ v[1].p[1] = v[0].p[1];
+ v[1].p[2] = v[0].p[2];
+ v[2].p[0] = v[1].p[0];
+ v[2].p[1] = v[1].p[1] + PlayerBox[Game].y[1] - PlayerBox[Game].y[0];
+ v[2].p[2] = v[0].p[2];
+ v[3].p[0] = v[0].p[0];
+ v[3].p[1] = v[2].p[1];
+ v[3].p[2] = v[0].p[2];
+ VectorCopy(v[0].p,v[4].p);
+ VectorCopy(v[1].p,v[5].p);
+ VectorCopy(v[2].p,v[6].p);
+ VectorCopy(v[3].p,v[7].p);
+ v[4].p[2] += PlayerBox[Game].z[1] - PlayerBox[Game].z[0];
+ v[5].p[2] += PlayerBox[Game].z[1] - PlayerBox[Game].z[0];
+ v[6].p[2] += PlayerBox[Game].z[1] - PlayerBox[Game].z[0];
+ v[7].p[2] += PlayerBox[Game].z[1] - PlayerBox[Game].z[0];
+ for(i=0; i<=7; i++)
+ {
+#ifndef ISOMETRIC
+ project(&v[i]);
+#endif
+ Scale(rc,v[i],&pt[i]);
+ }
+ g_GLTable.m_pfn_qglBegin (GL_LINE_STRIP);
+ g_GLTable.m_pfn_qglVertex2i (pt[3].x, pt[3].y);
+ for(i=0; i<=3; i++)
+ g_GLTable.m_pfn_qglVertex2i (pt[i].x, pt[i].y);
+ g_GLTable.m_pfn_qglEnd ();
+ g_GLTable.m_pfn_qglBegin (GL_LINE_STRIP);
+ g_GLTable.m_pfn_qglVertex2i (pt[7].x, pt[7].y);
+ for(i=4; i<=7; i++)
+ g_GLTable.m_pfn_qglVertex2i (pt[i].x, pt[i].y);
+ g_GLTable.m_pfn_qglEnd ();
+ g_GLTable.m_pfn_qglBegin (GL_LINES);
+ for(i=0; i<=3; i++)
+ {
+ g_GLTable.m_pfn_qglVertex2i (pt[i].x,pt[i].y);
+ g_GLTable.m_pfn_qglVertex2i (pt[i+4].x,pt[i+4].y);
+ }
+ g_GLTable.m_pfn_qglEnd ();
+
+ g_GLTable.m_pfn_qglLineWidth (1);
+ g_GLTable.m_pfn_qglColor3f (0, 1, 0);
+ g_GLTable.m_pfn_qglDisable (GL_LINE_STIPPLE);
+}
+//=============================================================
+void DrawGrid(Rect rc)
+{
+ int i, j, k;
+ double h,w,x,y;
+ Point pt[2];
+ Rect rcBox;
+
+ w = (double)(rc.right-rc.left+1) - cxChar;
+ h = (double)(rc.top-rc.bottom+1) - cxChar - cyChar;
+
+ SFG = w/(Hur-Hll);
+ SFG = min(SFG, h/(Vur-Vll));
+
+ // Center drawing
+ X0G = (int)(rc.left + rc.right - (int)(SFG*(Hur-Hll)))/2;
+ Y0G = (int)(rc.top + rc.bottom + cyChar - (int)(SFG*(Vur-Vll)))/2;
+
+ g_GLTable.m_pfn_qglLineWidth (2);
+ g_GLTable.m_pfn_qglColor3f (0, 1, 0);
+ g_GLTable.m_pfn_qglDisable (GL_LINE_STIPPLE);
+
+ pt[0].y = Y0G;
+ pt[1].y = Y0G + (int)(SFG*(Vur-Vll));
+ g_GLTable.m_pfn_qglBegin (GL_LINES);
+ for(i=0; i<=NH; i++)
+ {
+ x = Hll + i * dh;
+ pt[0].x = X0G + (int)(SFG*(x-Hll));
+ g_GLTable.m_pfn_qglVertex2i(pt[0].x, pt[0].y);
+ g_GLTable.m_pfn_qglVertex2i(pt[0].x, pt[1].y);
+ }
+ g_GLTable.m_pfn_qglEnd ();
+ pt[0].x = X0G;
+ pt[1].x = X0G + (int)(SFG*(Hur-Hll));
+ g_GLTable.m_pfn_qglBegin (GL_LINES);
+ for(i=0; i<=NV; i++)
+ {
+ y = Vll + i * dv;
+ pt[0].y = Y0G + (int)(SFG*(Vur-y));
+ g_GLTable.m_pfn_qglVertex2i (pt[0].x,pt[0].y);
+ g_GLTable.m_pfn_qglVertex2i (pt[1].x,pt[0].y);
+ }
+ g_GLTable.m_pfn_qglEnd ();
+
+ g_GLTable.m_pfn_qglLineWidth (1);
+
+ // Draw axes
+ pt[0].x = rc.right - cyChar - cxChar - cyChar/2;
+ pt[0].y = rc.bottom + cyChar/2;
+ pt[1].x = pt[0].x + cyChar;
+ pt[1].y = pt[0].y;
+ g_GLTable.m_pfn_qglBegin (GL_LINES);
+ g_GLTable.m_pfn_qglVertex2i (pt[0].x,pt[0].y);
+ g_GLTable.m_pfn_qglVertex2i (pt[1].x,pt[1].y);
+ g_GLTable.m_pfn_qglEnd ();
+ switch(Plane)
+ {
+ case PLANE_YZ0:
+ case PLANE_YZ1:
+ texfont_write ("Y", pt[1].x, pt[1].y+cyChar/2);
+ break;
+ default:
+ texfont_write ("X", pt[1].x, pt[1].y+cyChar/2);
+ }
+ pt[1].x = pt[0].x;
+ pt[1].y = pt[0].y + cyChar;
+ g_GLTable.m_pfn_qglBegin (GL_LINES);
+ g_GLTable.m_pfn_qglVertex2i (pt[0].x,pt[0].y);
+ g_GLTable.m_pfn_qglVertex2i (pt[1].x,pt[1].y);
+ g_GLTable.m_pfn_qglEnd ();
+ switch(Plane)
+ {
+ case PLANE_XY0:
+ case PLANE_XY1:
+ texfont_write ("Y", pt[1].x-cyChar/2, pt[1].y+cyChar);
+ break;
+ default:
+ texfont_write ("Z", pt[1].x-cyChar/2, pt[1].y+cyChar);
+ }
+
+ // Denote fixed points with a 5x5 red rectangle
+ for(i=0; i<=NH; i++)
+ {
+ for(j=0; j<=NV; j++)
+ {
+ if(xyz[i][j].fixed)
+ {
+ x = Hll + i*dh;
+ y = Vll + j*dv;
+ rcBox.left = X0G + (int)(SFG*(x-Hll)) - 2;
+ rcBox.top = Y0G + (int)(SFG*(Vur-y)) + 2;
+ rcBox.right = rcBox.left + 5;
+ rcBox.bottom = rcBox.top - 5;
+
+ DRAW_QUAD (rcBox, 1,0,0);
+ }
+ }
+ }
+
+ // Denote currently selected point with a 5x5 green rectangle
+ if (NumVerticesSelected)
+ {
+ for(k=0; k<NumVerticesSelected; k++)
+ {
+ x = Hll + Vertex[k].i*dh;
+ y = Vll + Vertex[k].j*dv;
+ rcBox.left = X0G + (int)(SFG*(x-Hll)) - 2;
+ rcBox.top = Y0G + (int)(SFG*(Vur-y)) + 2;
+ rcBox.right = rcBox.left + 5;
+ rcBox.bottom = rcBox.top - 5;
+
+ DRAW_QUAD (rcBox, 0,1,0);
+ }
+ }
+
+ // Unmovable vertices
+ for(i=0; i<=NH; i++)
+ {
+ for(j=0; j<=NV; j++)
+ {
+ if(!CanEdit(i,j))
+ {
+ x = Hll + i*dh;
+ y = Vll + j*dv;
+ rcBox.left = X0G + (int)(SFG*(x-Hll)) - 2;
+ rcBox.top = Y0G + (int)(SFG*(Vur-y)) + 2;
+ rcBox.right = rcBox.left + 5;
+ rcBox.bottom = rcBox.top - 5;
+
+ DRAW_QUAD (rcBox, 1,1,0);
+ }
+ }
+ }
+
+ // Legend
+ rcBox.left = rc.left + cxChar/2 - 2;
+ rcBox.top = rc.top - cyChar/2 - 2;
+ rcBox.right = rcBox.left + 5;
+ rcBox.bottom = rcBox.top - 5;
+ DRAW_QUAD (rcBox, 1,0,0);
+ texfont_write ("Fixed points", rcBox.right+cxChar,rcBox.top-4+cyChar/2);
+
+ rcBox.top -= cyChar;
+ rcBox.bottom -= cyChar;
+ DRAW_QUAD (rcBox, 1,1,0);
+ texfont_write ("Not movable", rcBox.right+cxChar, rcBox.top-4+cyChar/2);
+
+ rcBox.top -= cyChar;
+ rcBox.bottom -= cyChar;
+ DRAW_QUAD (rcBox, 0,1,0);
+ texfont_write ("Selected", rcBox.right+cxChar, rcBox.top-4+cyChar/2);
+}
+
+//=============================================================
+void GetScaleFactor(Rect rc)
+{
+#ifdef ISOMETRIC
+ double h, w;
+
+ w = (double)(rc.right-rc.left+1) - cxChar;
+ h = (double)(rc.top-rc.bottom+1) - cxChar;
+
+ SF = w/( (XHi-XLo)*COSXA + (YHi-YLo)*COSYA );
+ SF = min(SF, h/( (XHi-XLo)*SINXA + (YHi-YLo)*SINYA + ZHi-ZLo ) );
+ // Center drawing
+ X0 = (int)(rc.left + rc.right - (int)(SF*( (XHi-XLo)*COSXA + (YHi-YLo)*COSYA )) )/2;
+ Y0 = (int)(rc.top + rc.bottom - (int)(SF*( (XHi-XLo)*SINXA + (YHi-YLo)*SINYA + ZHi-ZLo) ))/2;
+
+#else
+ double h, w;
+
+ w = (double)(rc.right-rc.left+1) - cxChar;
+ h = (double)(rc.top-rc.bottom+1) - cxChar;
+
+ SF = w/(Hhi-Hlo);
+ SF = min(SF, h/(Vhi-Vlo) );
+ X0 = (int)(rc.left + rc.right - (int)(SF*(Hhi-Hlo)))/2;
+ Y0 = (int)(rc.top + rc.bottom + (int)(SF*(Vhi-Vlo)))/2;
+#endif
+}
+
+//=============================================================
+void Scale(Rect rc,XYZ xyz,Point *pt)
+{
+
+#ifdef ISOMETRIC
+
+ pt[0].x = X0 + (int)(SF*( (xyz.p[0]-XLo)*COSXA +
+ (YHi-xyz.p[1])*COSYA ));
+ pt[0].y = Y0 + (int)(SF*( ZHi-xyz.p[2] +
+ (YHi-xyz.p[1])*SINYA +
+ (XHi-xyz.p[0])*SINXA ));
+#else
+ pt[0].x = X0 + (int)(SF*( xyz.pp[0] - Hlo ) );
+ pt[0].y = Y0 - (int)(SF*( Vhi - xyz.pp[1] ) );
+#endif
+
+}
+
+#ifndef ISOMETRIC
+/* ======================================================================= */
+void project(XYZ *v)
+{
+ // project a 3D point (x,y,z) onto view plane
+ double x, y, z, xa, ya, za;
+
+ x = v->p[0];
+ y = v->p[1];
+ z = v->p[2];
+
+ // yaw
+ xa = ct[0]*x - st[0]*z;
+ za = st[0]*x + ct[0]*z;
+
+ // roll
+ x = ct[1]*xa + st[1]*y;
+ ya = ct[1]*y - st[1]*xa;
+
+ // azimuth
+ z = ct[2]*za - st[2]*ya;
+ y = ct[2]*ya + st[2]*za;
+
+ // horizontal and vertical projections:
+// v->pp[0] = D*x/z;
+// v->pp[1] = D*y/z;
+ v->pp[0] = -y;
+ v->pp[1] = x;
+ v->pp[2] = z;
+
+ // NOTE: if perspective transformation is desired,
+ // set "persp" to the range from the surface,
+ // then:
+ // v->projected_h = -v->projected_h * persp/(v->projected_z-persp);
+ // v->projected_v = -v->projected_v * persp/(v->projected_z-persp);
+}
+/*=======================================================================*/
+void evaluate()
+{
+ int i, j;
+ XYZ v[4];
+
+ if(elevation > PI) elevation -= 2.*PI;
+ roll = elevation * sin(azimuth);
+ yaw = 1.5*PI + elevation*cos(azimuth);
+
+ // Find angles from midpoint to viewpoint:
+ st[0] = sin(yaw);
+ st[1] = sin(roll);
+ st[2] = sin(azimuth);
+ ct[0] = cos(yaw);
+ ct[1] = cos(roll);
+ ct[2] = cos(azimuth);
+
+ for(i=0; i<=NH; i++)
+ {
+ for(j=0; j<=NV; j++)
+ {
+ project(&xyz[i][j]);
+ }
+ }
+
+ Hhi = xyz[0][0].pp[0];
+ Hlo = Hhi;
+ Vhi = xyz[0][0].pp[1];
+ Vlo = Vhi;
+ for(i=0; i<=NH; i++)
+ {
+ for(j=0; j<=NV; j++)
+ {
+ Hlo = min(Hlo,xyz[i][j].pp[0]);
+ Hhi = max(Hhi,xyz[i][j].pp[0]);
+ Vlo = min(Vlo,xyz[i][j].pp[1]);
+ Vhi = max(Vhi,xyz[i][j].pp[1]);
+ }
+ }
+
+ // Include backface in min-max
+ VectorCopy(xyz[ 0][ 0].p,v[0].p);
+ VectorCopy(xyz[NH][ 0].p,v[1].p);
+ VectorCopy(xyz[NH][NV].p,v[2].p);
+ VectorCopy(xyz[ 0][NV].p,v[3].p);
+ switch(Plane)
+ {
+ case PLANE_XZ0:
+ case PLANE_XZ1:
+ v[0].p[1] = backface;
+ v[1].p[1] = v[0].p[1];
+ v[2].p[1] = v[0].p[1];
+ v[3].p[1] = v[0].p[1];
+ break;
+ case PLANE_YZ0:
+ case PLANE_YZ1:
+ v[0].p[0] = backface;
+ v[1].p[0] = v[0].p[0];
+ v[2].p[0] = v[0].p[0];
+ v[3].p[0] = v[0].p[0];
+ break;
+ default:
+ v[0].p[2] = backface;
+ v[1].p[2] = v[0].p[2];
+ v[2].p[2] = v[0].p[2];
+ v[3].p[2] = v[0].p[2];
+ }
+ for(i=0; i<=3; i++)
+ {
+ project(&v[i]);
+ Hlo = min(Hlo,v[i].pp[0]);
+ Hhi = max(Hhi,v[i].pp[0]);
+ Vlo = min(Vlo,v[i].pp[1]);
+ Vhi = max(Vhi,v[i].pp[1]);
+ }
+
+}
+#endif
projects / voretournament / voretournament.git / blobdiff