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- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include "gltk.h"
- #include "private.h"
-
-
- /*
- * Return the index of the first bit set. I'm using this instead of the
- * ffs() function because I'm not sure it's really portable.
- */
- static int my_ffs( unsigned int n )
- {
- if (n==0) {
- return 0;
- }
- else {
- unsigned int m = 1;
- int index = 1;
-
- while ((n&m)==0) {
- m <<= 1;
- index++;
- }
- return index;
- }
- }
-
-
- /******************************************************************************/
-
- int tkGetColorMapSize(void)
- {
-
- if (!xDisplay) {
- return 0;
- } else {
- return w.vInfoMain->colormap_size;
- }
- }
-
- /******************************************************************************/
-
- void tkGetMouseLoc(int *x, int *y)
- {
- int junk;
-
- *x = 0;
- *y = 0;
- XQueryPointer(xDisplay, w.wMain, (Window *)&junk, (Window *)&junk,
- &junk, &junk, x, y, (unsigned int *)&junk);
- }
-
- /******************************************************************************/
-
- void tkGetSystem(TKenum type, void *ptr)
- {
-
- switch (type) {
- case TK_X_DISPLAY:
- *(Display **)ptr = xDisplay;
- break;
- case TK_X_WINDOW:
- *(Window *)ptr = w.wMain;
- break;
- }
- }
-
- /******************************************************************************/
-
- void tkSetFogRamp(int density, int startIndex)
- {
- XColor c[4096];
- int rShift, gShift, bShift, intensity, fogValues, colorValues;
- int i, j, k;
-
- switch (w.vInfoMain->class) {
- case DirectColor:
- fogValues = 1 << density;
- colorValues = 1 << startIndex;
- for (i = 0; i < colorValues; i++) {
- for (j = 0; j < fogValues; j++) {
- k = i * fogValues + j;
- intensity = i * fogValues + j * colorValues;
- if (intensity > w.vInfoMain->colormap_size) {
- intensity = w.vInfoMain->colormap_size;
- }
- intensity = (intensity << 8) | intensity;
- rShift = my_ffs((unsigned int)w.vInfoMain->red_mask) - 1;
- gShift = my_ffs((unsigned int)w.vInfoMain->green_mask) - 1;
- bShift = my_ffs((unsigned int)w.vInfoMain->blue_mask) - 1;
- c[k].pixel = ((k << rShift) & w.vInfoMain->red_mask) |
- ((k << gShift) & w.vInfoMain->green_mask) |
- ((k << bShift) & w.vInfoMain->blue_mask);
- c[k].red = (unsigned short)intensity;
- c[k].green = (unsigned short)intensity;
- c[k].blue = (unsigned short)intensity;
- c[k].flags = DoRed | DoGreen | DoBlue;
- }
- }
- XStoreColors(xDisplay, w.cMapMain, c, w.vInfoMain->colormap_size);
- break;
- case GrayScale:
- case PseudoColor:
- fogValues = 1 << density;
- colorValues = 1 << startIndex;
- for (i = 0; i < colorValues; i++) {
- for (j = 0; j < fogValues; j++) {
- k = i * fogValues + j;
- intensity = i * fogValues + j * colorValues;
- if (intensity > w.vInfoMain->colormap_size) {
- intensity = w.vInfoMain->colormap_size;
- }
- intensity = (intensity << 8) | intensity;
- c[k].pixel = k;
- c[k].red = (unsigned short)intensity;
- c[k].green = (unsigned short)intensity;
- c[k].blue = (unsigned short)intensity;
- c[k].flags = DoRed | DoGreen | DoBlue;
- }
- }
- XStoreColors(xDisplay, w.cMapMain, c, w.vInfoMain->colormap_size);
- break;
- }
-
- XSync(xDisplay, 0);
- }
-
- /******************************************************************************/
-
- void tkSetGreyRamp(void)
- {
- XColor c[4096];
- float intensity;
- int rShift, gShift, bShift, i;
-
- switch (w.vInfoMain->class) {
- case DirectColor:
- for (i = 0; i < w.vInfoMain->colormap_size; i++) {
- intensity = (float)i / (float)w.vInfoMain->colormap_size *
- 65535.0 + 0.5;
- rShift = my_ffs((unsigned int)w.vInfoMain->red_mask) - 1;
- gShift = my_ffs((unsigned int)w.vInfoMain->green_mask) - 1;
- bShift = my_ffs((unsigned int)w.vInfoMain->blue_mask) - 1;
- c[i].pixel = ((i << rShift) & w.vInfoMain->red_mask) |
- ((i << gShift) & w.vInfoMain->green_mask) |
- ((i << bShift) & w.vInfoMain->blue_mask);
- c[i].red = (unsigned short)intensity;
- c[i].green = (unsigned short)intensity;
- c[i].blue = (unsigned short)intensity;
- c[i].flags = DoRed | DoGreen | DoBlue;
- }
- XStoreColors(xDisplay, w.cMapMain, c, w.vInfoMain->colormap_size);
- break;
- case GrayScale:
- case PseudoColor:
- for (i = 0; i < w.vInfoMain->colormap_size; i++) {
- intensity = (float)i / (float)w.vInfoMain->colormap_size *
- 65535.0 + 0.5;
- c[i].pixel = i;
- c[i].red = (unsigned short)intensity;
- c[i].green = (unsigned short)intensity;
- c[i].blue = (unsigned short)intensity;
- c[i].flags = DoRed | DoGreen | DoBlue;
- }
- XStoreColors(xDisplay, w.cMapMain, c, w.vInfoMain->colormap_size);
- break;
- }
-
- XSync(xDisplay, 0);
- }
-
- /******************************************************************************/
-
- void tkSetOneColor(int index, float r, float g, float b)
- {
- XColor c;
- int rShift, gShift, bShift;
-
- switch (w.vInfoMain->class) {
- case DirectColor:
- rShift = my_ffs((unsigned int)w.vInfoMain->red_mask) - 1;
- gShift = my_ffs((unsigned int)w.vInfoMain->green_mask) - 1;
- bShift = my_ffs((unsigned int)w.vInfoMain->blue_mask) - 1;
- c.pixel = ((index << rShift) & w.vInfoMain->red_mask) |
- ((index << gShift) & w.vInfoMain->green_mask) |
- ((index << bShift) & w.vInfoMain->blue_mask);
- c.red = (unsigned short)(r * 65535.0 + 0.5);
- c.green = (unsigned short)(g * 65535.0 + 0.5);
- c.blue = (unsigned short)(b * 65535.0 + 0.5);
- c.flags = DoRed | DoGreen | DoBlue;
- XStoreColor(xDisplay, w.cMapMain, &c);
- break;
- case GrayScale:
- case PseudoColor:
- if (index < w.vInfoMain->colormap_size) {
- c.pixel = index;
- c.red = (unsigned short)(r * 65535.0 + 0.5);
- c.green = (unsigned short)(g * 65535.0 + 0.5);
- c.blue = (unsigned short)(b * 65535.0 + 0.5);
- c.flags = DoRed | DoGreen | DoBlue;
- XStoreColor(xDisplay, w.cMapMain, &c);
- }
- break;
- }
-
- XSync(xDisplay, 0);
- }
-
- /******************************************************************************/
-
- void tkSetOverlayMap(int size, float *rgb)
- {
- XColor c;
- unsigned long *buf;
- int max, i;
- Status status;
-
- if (w.vInfoOverlay->class == PseudoColor) {
- max = (size > w.vInfoOverlay->colormap_size) ?
- w.vInfoOverlay->colormap_size : size;
- buf = (unsigned long *)calloc(max, sizeof(unsigned long));
- status =
- XAllocColorCells(xDisplay, w.cMapOverlay, True, NULL, 0, buf, max);
- if (status )
- for (i = /*1*/0; i < max; i++) {
- c.pixel = buf[i];
- c.red = (unsigned short)(rgb[i] * 65535.0 + 0.5);
- c.green = (unsigned short)(rgb[size+i] * 65535.0 + 0.5);
- c.blue = (unsigned short)(rgb[size*2+i] * 65535.0 + 0.5);
- c.flags = DoRed | DoGreen | DoBlue;
- XStoreColor(xDisplay, w.cMapOverlay, &c);
- }
- free(buf);
- }
-
- XSync(xDisplay, 0);
- }
-
- /******************************************************************************/
-
- void tkSetRGBMap(int size, float *rgb)
- {
- XColor c;
- int rShift, gShift, bShift, max, i;
-
- switch (w.vInfoMain->class) {
- case DirectColor:
- max = (size > w.vInfoMain->colormap_size) ? w.vInfoMain->colormap_size
- : size;
- rShift = my_ffs((unsigned int)w.vInfoMain->red_mask) - 1;
- gShift = my_ffs((unsigned int)w.vInfoMain->green_mask) - 1;
- bShift = my_ffs((unsigned int)w.vInfoMain->blue_mask) - 1;
- c.flags = DoRed | DoGreen | DoBlue;
- for (i = 0; i < max; i++) {
- c.pixel = ((i << rShift) & w.vInfoMain->red_mask) |
- ((i << gShift) & w.vInfoMain->green_mask) |
- ((i << bShift) & w.vInfoMain->blue_mask);
- c.red = c.green = c.blue = (unsigned short) (i * 65535 / (max-1));
- XStoreColor(xDisplay, w.cMapMain, &c);
- }
- break;
- case GrayScale:
- case PseudoColor:
- max = (size > w.vInfoMain->colormap_size) ? w.vInfoMain->colormap_size
- : size;
- for (i = 0; i < max; i++) {
- c.pixel = i;
- c.red = (unsigned short)(rgb[i] * 65535.0 + 0.5);
- c.green = (unsigned short)(rgb[size+i] * 65535.0 + 0.5);
- c.blue = (unsigned short)(rgb[size*2+i] * 65535.0 + 0.5);
- c.flags = DoRed | DoGreen | DoBlue;
- XStoreColor(xDisplay, w.cMapMain, &c);
- }
- break;
- }
-
- XSync(xDisplay, 0);
- }
-
- /******************************************************************************/
-
- GLenum tkSetWindowLevel(GLenum level)
- {
-
- switch (level) {
- case TK_OVERLAY:
- if (TK_HAS_OVERLAY(w.type)) {
- if (!glXMakeCurrent(xDisplay, w.wOverlay, w.cOverlay)) {
- return GL_FALSE;
- }
- } else {
- return GL_FALSE;
- }
- break;
- case TK_RGB:
- case TK_INDEX:
- if (!glXMakeCurrent(xDisplay, w.wMain, w.cMain)) {
- return GL_FALSE;
- }
- break;
- default:
- return GL_FALSE;
- }
- return GL_TRUE;
- }
-
- /******************************************************************************/
-