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#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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