99 lines
2.0 KiB
C++
99 lines
2.0 KiB
C++
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#include <stdlib.h>
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#include <time.h>
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#include <math.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <GL/gl.h>
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#include <GL/glu.h>
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#include "Pedestal.h"
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#include "glslUtil/glslUtil.h"
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#define N_PEDESTAL_LEVELS 4
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#define TOP_LEVEL_SIZE 4
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#define LEVEL_INC_SIZE 1.5
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#define LEVEL_HEIGHT 1
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static const GLfloat ped_normals[][3] = {
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{1, 0, 0},
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{0, 1, 0},
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{-1, 0, 0},
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{0, -1, 0},
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{0, 0, 1}
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};
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Pedestal::Pedestal()
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{
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m_last_ticks = 0;
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srand(time(NULL) + getpid());
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}
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Pedestal::~Pedestal()
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{
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}
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bool Pedestal::expose (GnomeScreensaver & gs)
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{
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if (m_last_ticks == 0)
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{
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m_last_ticks = gs.getTicks();
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m_start_ticks = m_last_ticks;
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}
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uint64_t ticks = gs.getTicks();
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int elapsed = ticks - m_last_ticks;
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glPushMatrix();
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glRotatef((ticks - m_start_ticks) * 0.1, 0, 0, 1);
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glRotatef(90.0, 1, 0, 0);
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m_logobox.draw();
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glPopMatrix();
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m_last_ticks = ticks;
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return true;
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}
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bool Pedestal::configure (GnomeScreensaver & gs)
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{
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glMatrixMode(GL_PROJECTION);
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glLoadIdentity();
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gluPerspective(60.0, gs.getAspectRatio() / gs.getNumMonitors(),
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0.01, 1000.0);
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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gluLookAt(0, -18, 4, 0, 0, 0, 0, 0, 1);
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glViewport(0, 0, gs.getWidth(), gs.getHeight());
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typedef struct {
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struct {
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GLfloat pos[3];
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GLfloat normal[3];
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} verts[8];
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} ped_vertex_data_t;
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ped_vertex_data_t * vdata = new ped_vertex_data_t[N_PEDESTAL_LEVELS];
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m_ped_vbo_id = guMakeBuffer(GL_ARRAY_BUFFER, GL_STATIC_DRAW,
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vdata, N_PEDESTAL_LEVELS * sizeof(vdata[0]));
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for (int i = 0; i < N_PEDESTAL_LEVELS; i++)
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{
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float z = i * LEVEL_HEIGHT;
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float r = TOP_LEVEL_SIZE / 2.0
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+ LEVEL_INC_SIZE * (N_PEDESTAL_LEVELS - 1 - i);
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}
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delete[] vdata;
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return true;
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}
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bool Pedestal::update (GnomeScreensaver & gs)
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{
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return true;
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}
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