136 lines
3.6 KiB
C++
136 lines
3.6 KiB
C++
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/* Author: Josh Holtrop
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* DornerWorks screensaver
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*/
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#include <GL/gl.h>
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#include <GL/glu.h>
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#include "LightBounce.h"
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#include <iostream>
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#include <vector>
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using namespace std;
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#define SIZE 5
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#define STRIDE_MULTIPLIER 1.0;
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#define ZOOM 12.0
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LightBounceBox::LightBounceBox(LogoBox * lb,
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float x, float y, float z,
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float xr, float yr, float zr)
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{
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this->x = x;
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this->y = y;
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this->z = z;
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this->xr = xr;
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this->yr = yr;
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this->zr = zr;
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this->dist = 0.0;
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m_dl = glGenLists(1);
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glNewList(m_dl, GL_COMPILE);
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glPushMatrix();
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glTranslatef(x, y, z);
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glRotatef(xr, 1, 0, 0);
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glRotatef(yr, 0, 1, 0);
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glRotatef(zr, 0, 0, 1);
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lb->draw();
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glPopMatrix();
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glEndList();
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}
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LightBounceBox::~LightBounceBox()
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{
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glDeleteLists(m_dl, 1);
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}
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/* construct screensaver mode and do some basic OpenGL setup */
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LightBounce::LightBounce(SSMain * _SSMain) : SSMode(_SSMain)
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{
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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gluPerspective(60.0,
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(double)m_SSMain->getWidth()
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/ (double)m_SSMain->getHeight()
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/ (double)m_SSMain->getNumMonitors(),
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0.01,
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1000.01);
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glMatrixMode(GL_MODELVIEW);
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float box_stride = m_logoBox.getWidth() * STRIDE_MULTIPLIER;
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float half_size = SIZE * box_stride / 2.0;
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float y = -half_size + box_stride / 2.0;
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int rot = false;
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for (int i = 0; i < SIZE; i++)
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{
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float x = -half_size + box_stride / 2.0;
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for (int j = 0; j < SIZE; j++)
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{
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// front
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LightBounceBox * box = new LightBounceBox(
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&m_logoBox, x, y, -half_size, 0, 180.0, rot ? 90.0 : 0
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);
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m_boxes.push_back(box);
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// right
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box = new LightBounceBox(
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&m_logoBox, half_size, y, x, 0, 90.0, rot ? 0 : 90.0
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);
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m_boxes.push_back(box);
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// back
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box = new LightBounceBox(
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&m_logoBox, x, y, half_size, 0, 0, rot ? 90.0 : 0
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);
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m_boxes.push_back(box);
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// left
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box = new LightBounceBox(
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&m_logoBox, -half_size, y, x, 0, 270.0, rot ? 0 : 90.0
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);
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m_boxes.push_back(box);
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// top
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box = new LightBounceBox(
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&m_logoBox, x, half_size, y, 270, 0, rot ? 0 : 90.0
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);
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m_boxes.push_back(box);
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// bottom
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box = new LightBounceBox(
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&m_logoBox, x, -half_size, y, 90, 0, rot ? 0 : 90.0
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);
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m_boxes.push_back(box);
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rot = !rot;
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x += box_stride;
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}
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y += box_stride;
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}
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}
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LightBounce::~LightBounce()
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{
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int sz = m_boxes.size();
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for (int i = 0; i < sz; i++)
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delete m_boxes[i];
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}
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/* called every time this screensaver mode should redraw the screen */
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void LightBounce::update()
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{
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SSMode::update();
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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int numMonitors = m_SSMain->getNumMonitors();
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int width = m_SSMain->getWidth();
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int height = m_SSMain->getHeight();
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for (int i = 0; i < numMonitors; i++)
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{
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glViewport(i*width/numMonitors, 0, width/numMonitors, height);
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glLoadIdentity();
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gluLookAt(0, SIZE * ZOOM * 2.0 / 3.0, SIZE * ZOOM, 0, 0, 0, 0, 1, 0);
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glRotatef(m_elapsed/66.0f, 0, 1, 0);
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int sz = m_boxes.size();
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for (int i = 0; i < sz; i++)
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{
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m_boxes[i]->draw();
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}
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}
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SDL_GL_SwapBuffers();
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}
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