mini-led-cube/editor/src/display.c

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#include <stdio.h>
#include <glut.h>
#include "config.h"
#include "display.h"
void drawLEDs(int orientation, int mode) {
int x, y, z;
int colorIndex = 0;
if (orientation == TOP_ORIENTATION) {
glRotatef(90, 2, 0, 0);
}
for (z=-10; z<=10; z+=10) // Ebene
for (y=-10; y<=10; y+=10) // Zeile
for (x=-10; x<=10; x+=10) { // Spalte
if (mode == PICKING_MODE) {
glColor3ub(0, 0, colorIndex*8);
colorIndex++;
} else {
glMaterialfv(GL_FRONT, GL_AMBIENT, (z == 0 ? ledOnMaterial : ledOffMaterial));
}
glPushMatrix();
glTranslatef(x, y, z-0.8);
glutSolidSphere(1, 16, 16);
gluCylinder(quadric, 1, 1, 1.9, 16, 2);
glTranslatef(0, 0, 1.9);
gluCylinder(quadric, 1.25, 1.25, 0.35, 16, 2);
gluDisk(quadric, 0, 1.25, 16, 16);
glTranslatef(0, 0, 0.35);
gluDisk(quadric, 0, 1.25, 16, 16);
glPopMatrix();
}
}
void drawWires() {
int x, y;
for (y=-10; y<=10; y+=10)
for (x=-10; x<=10; x+=10) {
glMaterialfv(GL_FRONT, GL_AMBIENT, ((x == 0 || y == 0) ? innerWireMaterial : wireMaterial));
// Front
glBegin(GL_LINES);
glVertex3f(x, y, -10);
glVertex3f(x, y, 10);
glEnd();
// Side
glBegin(GL_LINES);
glVertex3f(-10, x, y);
glVertex3f(10, x, y);
glEnd();
// Top
glBegin(GL_LINES);
glVertex3f(x, -10, y);
glVertex3f(x, 10, y);
glEnd();
}
}
void setScene() {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(ZOOM_LEVEL, WINDOW_WIDTH/WINDOW_HEIGHT, 1.0, 350.0);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt(lookX, eyeAngle, lookZ, 0, 0, 0, 0, 1, 0);
}
// OpenGL Display function
void display() {
setScene();
drawLEDs(TOP_ORIENTATION, RENDER_MODE);
drawWires();
glutSwapBuffers();
}
// Picking function
void displayPickingObjects() {
setScene();
glDisable(GL_DITHER);
glDisable(GL_LIGHTING);
drawLEDs(TOP_ORIENTATION, PICKING_MODE);
glEnable(GL_LIGHTING);
glEnable(GL_DITHER);
}