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reduce - normalize data, multiple reduction methods 

svn path=/trunk/boinc/; revision=936
This commit is contained in:
Eric Heien 2003-02-19 00:06:05 +00:00
parent b6a2cd9504
commit b4a937d199
2 changed files with 43 additions and 17 deletions
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52
api/reduce.cpp
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@ -11,6 +11,7 @@ REDUCED_ARRAY::REDUCED_ARRAY() {
rdata = 0;
ftemp = 0;
itemp = 0;
reduce_method = REDUCE_METHOD_AVG;
}
REDUCED_ARRAY::~REDUCED_ARRAY() {
@ -54,6 +55,7 @@ void REDUCED_ARRAY::init(int sx, int sy) {
last_ry = 0;
last_ry_count = 0;
rdata_max = 0;
rdata_min = (float)1e20;
}
bool REDUCED_ARRAY::full() {
@ -86,12 +88,27 @@ void REDUCED_ARRAY::reduce_source_row(float* in, float* out) {
memset(itemp, 0, rdimx*sizeof(int));
for (i=0; i<sdimx; i++) {
ri = (i*rdimx)/sdimx;
out[ri] += in[i];
itemp[ri]++;
}
for (i=0; i<rdimx; i++) {
if (itemp[i] > 1) out[i] /= itemp[i];
switch (reduce_method) {
case REDUCE_METHOD_AVG:
out[ri] += in[i];
itemp[ri]++;
break;
case REDUCE_METHOD_SUM:
out[ri] += in[i];
break;
case REDUCE_METHOD_MIN:
out[ri] = min(out[ri],in[i]);
break;
case REDUCE_METHOD_MAX:
out[ri] = max(out[ri],in[i]);
break;
}
}
if (reduce_method==REDUCE_METHOD_AVG) {
for (i=0; i<rdimx; i++) {
if (itemp[i] > 1) out[i] /= itemp[i];
}
}
}
void REDUCED_ARRAY::update_max(int row) {
@ -100,6 +117,7 @@ void REDUCED_ARRAY::update_max(int row) {
for (i=0; i<rdimx; i++) {
if (p[i] > rdata_max) rdata_max = p[i];
if (p[i] < rdata_min) rdata_min = p[i];
}
}
@ -183,10 +201,10 @@ void REDUCED_ARRAY::draw_row_quad(int row) {
for (i=0; i<rdimx-1; i++) {
x0 = draw_pos[0] + (draw_size[0]*i)/rdimx;
x1 = x0 + draw_deltax;
float h00 = row0[i]/rdata_max;
float h01 = row0[i+1]/rdata_max;
float h10 = row1[i]/rdata_max;
float h11 = row1[i+1]/rdata_max;
float h00 = (row0[i]-rdata_min)/(rdata_max-rdata_min);
float h01 = (row0[i+1]-rdata_min)/(rdata_max-rdata_min);
float h10 = (row1[i]-rdata_min)/(rdata_max-rdata_min);
float h11 = (row1[i+1]-rdata_min)/(rdata_max-rdata_min);
y00 = draw_pos[1] + draw_size[1]*h00;
y01 = draw_pos[1] + draw_size[1]*h01;
@ -217,10 +235,10 @@ void REDUCED_ARRAY::draw_row_quad(int row) {
x0 = draw_pos[0] + (draw_size[0]*i)/rdimx;
x1 = x0 + draw_deltax;
float eps=.03f;
y00 = draw_pos[1] + draw_size[1]*row0[i]/rdata_max+eps;
y01 = draw_pos[1] + draw_size[1]*row0[i+1]/rdata_max+eps;
y10 = draw_pos[1] + draw_size[1]*row1[i]/rdata_max+eps;
y11 = draw_pos[1] + draw_size[1]*row1[i+1]/rdata_max+eps;
y00 = draw_pos[1] + draw_size[1]*(row0[i]-rdata_min)/rdata_max+eps;
y01 = draw_pos[1] + draw_size[1]*(row0[i+1]-rdata_min)/rdata_max+eps;
y10 = draw_pos[1] + draw_size[1]*(row1[i]-rdata_min)/rdata_max+eps;
y11 = draw_pos[1] + draw_size[1]*(row1[i+1]-rdata_min)/rdata_max+eps;
glVertex3f(x0, y00, z0);
glVertex3f(x1, y01, z0);
glVertex3f(x1, y01, z0);
@ -240,7 +258,7 @@ void REDUCED_ARRAY::draw_row_rect_x(int row) {
for (i=0; i<rdimx; i++) {
x0 = draw_pos[0] + (draw_size[0]*i)/rdimx;
x1 = x0 + draw_deltax*.8f;
float h = row0[i]/rdata_max;
float h = (row0[i]-rdata_min)/(rdata_max-rdata_min);
y0 = draw_pos[1];
y1 = draw_pos[1] + draw_size[1]*h;
@ -267,7 +285,7 @@ void REDUCED_ARRAY::draw_row_rect_x(int row) {
for (i=0; i<rdimx; i++) {
x0 = draw_pos[0] + (draw_size[0]*i)/rdimx;
x1 = x0 + draw_deltax*.8f;
float h = row0[i]/rdata_max;
float h = (row0[i]-rdata_min)/(rdata_max-rdata_min);
y1 = draw_pos[1] + draw_size[1]*h;
@ -287,7 +305,7 @@ void REDUCED_ARRAY::draw_row_rect_y(int row) {
glBegin(GL_QUADS);
for (i=0; i<rdimx-1; i++) {
x0 = draw_pos[0] + (draw_size[0]*i)/rdimx;
float h = row0[i]/rdata_max;
float h = (row0[i]-rdata_min)/(rdata_max-rdata_min);
y0 = draw_pos[1];
y1 = draw_pos[1] + draw_size[1]*h;
@ -313,7 +331,7 @@ void REDUCED_ARRAY::draw_row_rect_y(int row) {
glColor3f(0., 0., 0.);
for (i=0; i<rdimx-1; i++) {
x0 = draw_pos[0] + (draw_size[0]*i)/rdimx;
float h = row0[i]/rdata_max;
float h = (row0[i]-rdata_min)/(rdata_max-rdata_min);
y1 = draw_pos[1] + draw_size[1]*h;

8
api/reduce.h
View File

@ -19,6 +19,12 @@
// If reduced in one dimension, draw vertical rectangles.
// Otherwise draw quadrilaterals.
#define REDUCE_METHOD_AVG 0 // Take the average of reduced elements
#define REDUCE_METHOD_SUM 1 // Take the sum of reduced elements
#define REDUCE_METHOD_MAX 2 // Take the maximum of reduced elements
#define REDUCE_METHOD_MIN 3 // Take the minimum of reduced elements
class REDUCED_ARRAY {
public:
int sdimx, sdimy; // size of the source array
@ -28,6 +34,7 @@ public:
int scury; // next row of source array
float* rdata;
float rdata_max; // estimated or actual maximum
float rdata_min; // estimated or actual minimum
float* ftemp;
int* itemp;
// the following 2 are relevant only if sdimy > rdimy
@ -39,6 +46,7 @@ public:
float draw_size[3];
float draw_deltax;
float draw_deltaz;
int reduce_method; // Which method to use for data row reduction
double hue0;
double dhue;