From 65bcb3040dfae00625a95ae1ffd02720513ded13 Mon Sep 17 00:00:00 2001
From: neoraider <devnull@localhost>
Date: Tue, 23 Oct 2007 19:08:04 +0000
Subject: zoomedit: Renderer in Klasse gekapselt.

---
 Renderer.cpp | 148 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 148 insertions(+)
 create mode 100644 Renderer.cpp

(limited to 'Renderer.cpp')

diff --git a/Renderer.cpp b/Renderer.cpp
new file mode 100644
index 0000000..9365589
--- /dev/null
+++ b/Renderer.cpp
@@ -0,0 +1,148 @@
+#include "Renderer.h"
+#include <GL/gl.h>
+
+
+void Renderer::drawGrid(const Rectangle &rect, float scale) {
+  float depth = log10f(scale)-0.75f;
+  float depth2 = floorf(depth);
+  float step = powf(0.1f, depth2);
+  float f;
+  int i;
+  //gchar *string;
+  float x1 = rect.getVertex1().getX(), y1 = rect.getVertex1().getY();
+  float x2 = rect.getVertex2().getX(), y2 = rect.getVertex2().getY();
+  
+  
+  glBegin(GL_LINES);
+  //cairo_set_font_size(cr, 10.0/scale);
+  
+  for(i = 0; 0.4f*(depth-depth2+i-1) < 0.5f; i++) {
+    f = fminf(0.4f*(depth-depth2+i), 0.5f);
+    glColor3f(f, f, f);
+    
+    for(f = x1 - fmodf(x1, step) - step; f <= x2; f+=step) {
+      glVertex2f(f, y1);
+      glVertex2f(f, y2);
+      
+      /*if(step > 0.005) {
+          if(step > 0.5)
+            string = g_strdup_printf("%i", (int)rint(d));
+          else
+            string = g_strdup_printf("%.*f", -(int)floor(log10(step*1.1)), d+step/10);
+          
+          cairo_move_to(cr, d+1/scale, y1+11/scale);
+          cairo_show_text(cr, string);
+          
+          g_free(string);
+        }*/
+    }
+    
+    for(f = y1 - fmodf(y1, step) - step; f <= y2; f+=step) {
+      glVertex2f(x1, f);
+      glVertex2f(x2, f);
+      
+      /*if(step > 0.005) {
+          if(step > 0.5)
+            string = g_strdup_printf("%i", (int)rint(d));
+          else
+            string = g_strdup_printf("%.*f", -(int)floor(log10(step*1.1)), d+step/10);
+          
+          cairo_move_to(cr, x1+3/scale, d+11/scale);
+          cairo_show_text(cr, string);
+          
+          g_free(string);
+        }*/
+    }
+    
+    step *= 10;
+  }
+  
+  glEnd();
+}
+
+void Renderer::fillPolygon(const Polygon &polygon) {
+  std::vector<Triangle> triangles;
+  
+  polygon.triangulate(triangles);
+  
+  glBegin(GL_TRIANGLES);
+  
+  for(std::vector<Triangle>::iterator t = triangles.begin(); t != triangles.end(); t++) {
+    glVertex2f(t->getVertexA().getX(), t->getVertexA().getY());
+    glVertex2f(t->getVertexB().getX(), t->getVertexB().getY());
+    glVertex2f(t->getVertexC().getX(), t->getVertexC().getY());
+  }
+  
+  glEnd();
+}
+
+void Renderer::drawPolygon(const Polygon &polygon, bool close) {
+  glBegin(GL_LINE_STRIP);
+  
+  for(Polygon::const_iterator vertex = polygon.begin(); vertex != polygon.end(); vertex++)
+    glVertex2d(vertex->getX(), vertex->getY());
+  
+  if(close)
+    glVertex2d(polygon.front().getX(), polygon.front().getY());
+  
+  glEnd();
+}
+
+void Renderer::render(const Level &level, const Rectangle &rect, float scale) {
+  glClear(GL_COLOR_BUFFER_BIT);
+  
+  glLineWidth(1.0f);
+  
+  drawGrid(rect, scale);
+  
+  for(Level::const_iterator room = level.begin(); room != level.end(); room++) {
+    if(&*room == editManager->getActiveRoom() && editManager->getMode() == EditManager::ADD) continue;
+    
+    if(&*room == editManager->getActiveRoom())
+      glColor4f(0.0f, 0.7f, 1.0f, 0.2f);
+    else
+      glColor4f(0.0f, 0.7f, 1.0f, 0.3f);
+    
+    fillPolygon(*room);
+    
+    if(&*room == editManager->getActiveRoom()) {
+      glColor4f(1.0f, 1.0f, 1.0f, 0.9f);
+      glLineWidth(2.0f);
+    }
+    else if(&*room == editManager->getHoveredRoom() && editManager->getMode() == EditManager::VIEW) {
+      glColor4f(0.0f, 0.7f, 1.0f, 0.7f);
+      glLineWidth(2.0f);
+    }
+    else {
+      glColor4f(0.0f, 0.7f, 1.0f, 0.7f);
+      glLineWidth(1.0f);
+    }
+    
+    drawPolygon(*room, true);
+  }
+  
+  if(editManager->getMode() == EditManager::ADD) {
+    if(editManager->polygonOk(*editManager->getActiveRoom()))
+      glColor4f(0.0f, 0.7f, 1.0f, 0.2f);
+    else
+      glColor4f(1.0f, 0.3f, 0.3f, 0.2f);
+    
+    fillPolygon(*editManager->getActiveRoom());
+    
+    glLineWidth(2.0f);
+    glColor4f(0.0f, 0.7f, 1.0f, 0.7f);
+    drawPolygon(*editManager->getActiveRoom(), false);
+    
+    if(!editManager->getActiveRoom()->empty() && editManager->getHoveredVertex()) {
+      if(!editManager->vertexOk(*editManager->getHoveredVertex()))
+        glColor4f(1.0f, 0.3f, 0.3f, 0.7f);
+      
+      glBegin(GL_LINES);
+      
+      glVertex2d(editManager->getActiveRoom()->back().getX(), editManager->getActiveRoom()->back().getY());
+      glVertex2d(editManager->getHoveredVertex()->getX(), editManager->getHoveredVertex()->getY());
+      
+      glEnd();
+    }
+  }
+}
-- 
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