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Render cube

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hodasemi 2019-05-31 14:31:02 +02:00
parent cc03214142
commit 1dca5470f6
1 changed files with 74 additions and 12 deletions
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86
exercise3/src/cube_system.cpp
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@ -1,6 +1,6 @@
//
// This source code is property of the Computer Graphics and Visualization
// chair of the TU Dresden. Do not distribute in modified or unmodified form!
// This source code is property of the Computer Graphics and Visualization
// chair of the TU Dresden. Do not distribute in modified or unmodified form!
// Copyright (C) 2016 CGV TU Dresden - All Rights Reserved
//
#include "cube_system.h"
@ -51,17 +51,17 @@ void cube_system::render_system()
{
/********
Task 2.1.2. Program the transformation tree from the exercise sheet. To store the
active aggregated transformation matrix on top of a stack use glPushMatrix
active aggregated transformation matrix on top of a stack use glPushMatrix
and to reactivate and remove the top element of the transformation stack
use glPopMatrix. For animation a variable "angle" (which has values
between 0 and 359) is defined. Use it for rotations as defined in
the transformation tree.
Aufgabe 2.1.2. Programmieren Sie den Transformationsbaum aus dem Uebungsblatt.
Nutzen Sie glPushMatrix um die aktuelle Gesamttransformations-Matrix an die
Nutzen Sie glPushMatrix um die aktuelle Gesamttransformations-Matrix an die
Spitze eines Stacks zu speichern und glPopMatrix um die vorderste Matrix
im Stack zu entfernen und zu reaktivieren. Fuer Animationen steht eine Variable
"angle" zur Verfuegung (die Werte zwischen 0 und 359 enthält). Nutzen Sie diese
Variable für Rotationen analog zu den Angaben im gegebenen Transformationsbaum.
"angle" zur Verfuegung (die Werte zwischen 0 und 359 enth<EFBFBD>lt). Nutzen Sie diese
Variable f<EFBFBD>r Rotationen analog zu den Angaben im gegebenen Transformationsbaum.
*********/
@ -73,22 +73,84 @@ void cube_system::render_system()
void render_cube_face(
const double color[3],
const double p0[3],
const double p1[3],
const double p2[3],
const double p3[3])
{
glVertex3dv(p0);
glColor3dv(color);
glVertex3dv(p1);
glColor3dv(color);
glVertex3dv(p2);
glColor3dv(color);
glVertex3dv(p2);
glColor3dv(color);
glVertex3dv(p3);
glColor3dv(color);
glVertex3dv(p0);
glColor3dv(color);
}
// Render one single cube
void cube_system::render_cube()
{
/********
Task 2.1.1. Tesellate a cube by specifying vertices and colors via the commands
glVertex3d and glColor3d. Choose appropriate primitives (parameter to
glBegin) and provide vertices and colors for all 6 sides. The cube shall
Task 2.1.1. Tesellate a cube by specifying vertices and colors via the commands
glVertex3d and glColor3d. Choose appropriate primitives (parameter to
glBegin) and provide vertices and colors for all 6 sides. The cube shall
range from (-1, -1, -1) to (1, 1, 1).
Aufgabe 2.1.1. Tesellieren Sie einen Wuerfel, indem Sie Vertices und Farben mittels
der Kommandos glVertex3d und glColor3d spezifizieren. Waehlen Sie
zunaechst das passende Zeichenprimitiv (Parameter von glBegin) und
erstellen Sie Vertices und Farben für alle 6 Seiten. Der Wuerfel soll
erstellen Sie Vertices und Farben f<EFBFBD>r alle 6 Seiten. Der Wuerfel soll
von (-1, -1, -1) bis (1, 1, 1) reichen.
*********/
/*
4 ----------- 3
/. /|
/ . / |
/ . / |
1 ----------- 2 |
| 8 . . . . | . 7
| . | /
| . | /
|. |/
5 ----------- 6
*/
const double vertices[8][3] = {
{-1.0, -1.0, 1.0},
{ 1.0, -1.0, 1.0},
{ 1.0, 1.0, 1.0},
{-1.0, 1.0, 1.0},
{-1.0, -1.0, -1.0},
{ 1.0, -1.0, -1.0},
{ 1.0, 1.0, -1.0},
{-1.0, 1.0, -1.0}
};
const double colors[6][3] = {
{1.0, 0.0, 0.0},
{0.0, 1.0, 0.0},
{0.0, 0.0, 1.0},
{1.0, 1.0, 0.0},
{1.0, 0.0, 1.0},
{0.0, 1.0, 1.0},
};
render_cube_face(colors[0], vertices[0], vertices[1], vertices[2], vertices[3]);
render_cube_face(colors[1], vertices[1], vertices[5], vertices[6], vertices[2]);
render_cube_face(colors[2], vertices[5], vertices[4], vertices[7], vertices[6]);
render_cube_face(colors[3], vertices[4], vertices[0], vertices[3], vertices[7]);
render_cube_face(colors[4], vertices[4], vertices[5], vertices[1], vertices[0]);
render_cube_face(colors[5], vertices[6], vertices[7], vertices[3], vertices[2]);
}
@ -116,5 +178,5 @@ void cube_system::setup_projection()
// Set debug text
void cube_system::set_text(std::stringstream &stream)
{
stream<<"Showing cube system (with rotation parameter at "<<angle<<"°)";
stream<<"Showing cube system (with rotation parameter at "<<angle<<"<EFBFBD>)";
}