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- #include <stdio.h>
- #include <stdlib.h>
-
- #include <gtk/gtk.h>
-
- #include <libgimp/gimp.h>
-
- #include "fp.h"
-
- extern FP_Params Current;
-
- extern GimpDrawable *drawable, *mask;
- extern ReducedImage *reduced;
-
- extern gint nudgeArray[256];
-
- gint colorSign[3][ALL_PRIMARY]=
- {{1,-1,-1,-1,1,1},{-1,1,-1,1,1,-1},{-1,-1,1,1,-1,1}};
-
-
- void initializeFilterPacks()
- {
- gint i, j;
- for (i=0; i<256; i++)
- for (j=BY_HUE; j<JUDGE_BY; j++) {
- Current.redAdj [j][i]=0;
- Current.greenAdj [j][i]=0;
- Current.blueAdj [j][i]=0;
- Current.satAdj [j][i]=0;
- }
- }
-
- void resetFilterPacks()
- {
- initializeFilterPacks();
- refreshPreviews(Current.VisibleFrames);
- }
-
- ReducedImage *Reduce_The_Image(GimpDrawable *drawable,
- GimpDrawable *mask,
- gint LongerSize,
- gint Slctn)
- {
- gint RH, RW, width, height, bytes=drawable->bpp;
- ReducedImage *temp=(ReducedImage *)malloc(sizeof(ReducedImage));
- guchar *tempRGB, *src_row, *tempmask, *src_mask_row,R,G,B;
- gint i, j, whichcol, whichrow, x1, x2, y1, y2;
- GimpPixelRgn srcPR, srcMask;
- gint NoSelectionMade=TRUE;
- hsv *tempHSV, H, S, V;
-
- gimp_drawable_mask_bounds (drawable->id, &x1, &y1, &x2, &y2);
- width = x2-x1;
- height = y2-y1;
-
- if (width != drawable->width && height != drawable->height)
- NoSelectionMade=FALSE;
-
- if (Slctn==0) {
- x1=0;
- x2=drawable->width;
- y1=0;
- y2=drawable->height;
- }
-
- if (Slctn==2) {
- x1=MAX(0, x1-width/2.0);
- x2=MIN(drawable->width, x2+width/2.0);
- y1=MAX(0, y1-height/2.0);
- y2=MIN(drawable->height, y2+height/2.0);
- }
-
- width = x2-x1;
- height = y2-y1;
-
- if (width>height) {
- RW=LongerSize;
- RH=(float) height * (float) LongerSize/ (float) width;
- }
- else {
- RH=LongerSize;
- RW=(float)width * (float) LongerSize/ (float) height;
- }
-
- tempRGB = (guchar *) malloc(RW*RH*bytes);
- tempHSV = (hsv *) malloc(RW*RH*bytes*sizeof(hsv));
- tempmask = (guchar *) malloc(RW*RH);
-
- gimp_pixel_rgn_init (&srcPR, drawable, x1, y1, width, height, FALSE, FALSE);
- gimp_pixel_rgn_init (&srcMask, mask, x1, y1, width, height, FALSE, FALSE);
-
- src_row = (guchar *) malloc (width*bytes);
- src_mask_row = (guchar *) malloc (width*bytes);
-
- for (i=0; i<RH; i++) {
- whichrow=(float)i*(float)height/(float)RH;
- gimp_pixel_rgn_get_row (&srcPR, src_row, x1, y1+whichrow, width);
- gimp_pixel_rgn_get_row (&srcMask, src_mask_row, x1, y1+whichrow, width);
-
- for (j=0; j<RW; j++) {
- whichcol=(float)j*(float)width/(float)RW;
-
- if (NoSelectionMade)
- tempmask[i*RW+j]=255;
- else
- tempmask[i*RW+j]=src_mask_row[whichcol];
-
- R=src_row[whichcol*bytes+0];
- G=src_row[whichcol*bytes+1];
- B=src_row[whichcol*bytes+2];
-
- H = R/255.0;
- S = G/255.0;
- V = B/255.0;
- gimp_rgb_to_hsv_double(&H,&S,&V);
-
- tempRGB[i*RW*bytes+j*bytes+0]=R;
- tempRGB[i*RW*bytes+j*bytes+1]=G;
- tempRGB[i*RW*bytes+j*bytes+2]=B;
-
- tempHSV[i*RW*bytes+j*bytes+0]=H;
- tempHSV[i*RW*bytes+j*bytes+1]=S;
- tempHSV[i*RW*bytes+j*bytes+2]=V;
-
- if (bytes==4)
- tempRGB[i*RW*bytes+j*bytes+3]=src_row[whichcol*bytes+3];
-
- }
- }
- temp->width=RW;
- temp->height=RH;
- temp->rgb=tempRGB;
- temp->hsv=tempHSV;
- temp->mask=tempmask;
- return temp;
- }
-
- /*************************************************************/
- /************** The Preview Function *************************/
- void
- fp_render_preview(GtkWidget *preview,
- gint changewhat,
- gint changewhich)
- {
- guchar *a;
- gint Inten, bytes=drawable->bpp;
- gint i, j, k, nudge, M, m, middle,JudgeBy;
- float partial;
- gint RW=reduced->width;
- gint RH=reduced->height;
- gint backupP[3], P[3], tempSat[JUDGE_BY][256];
-
- a =(guchar *) malloc(bytes*RW);
-
- if (changewhat==SATURATION)
- for (k=0; k<256; k++) {
- for (JudgeBy=BY_HUE; JudgeBy<JUDGE_BY; JudgeBy++)
- tempSat[JudgeBy][k]=0;
- tempSat[Current.ValueBy][k] += changewhich*nudgeArray[(k+Current.Offset)%256];
- }
-
- for (i=0; i<RH; i++) {
- for (j=0; j<RW; j++) {
-
- backupP[0] = P[0] = (int) reduced->rgb[i*RW*bytes + j*bytes + 0];
- backupP[1] = P[1] = (int) reduced->rgb[i*RW*bytes + j*bytes + 1];
- backupP[2] = P[2] = (int) reduced->rgb[i*RW*bytes + j*bytes + 2];
-
- m = MIN(MIN(P[0],P[1]),P[2]);
- M = MAX(MAX(P[0],P[1]),P[2]);
- middle=(M+m)/2;
- for (k=0; k<3; k++)
- if (P[k]!=m && P[k]!=M) middle=P[k];
-
- partial = reduced->mask[i*RW+j]/255.0;
-
- for (JudgeBy=BY_HUE; JudgeBy<JUDGE_BY; JudgeBy++) {
- if (!Current.Touched[JudgeBy]) continue;
-
- Inten = reduced->hsv[i*RW*bytes + j*bytes + JudgeBy]*255.0;
-
- /*DO SATURATION FIRST*/
- if (changewhat != NONEATALL) {
- if (M!=m) {
- for (k=0; k<3; k++)
- if (backupP[k] == M)
- P[k] = MAX(P[k]+partial*Current.satAdj[JudgeBy][Inten],middle);
- else if (backupP[k] == m)
- P[k] = MIN(P[k]-partial*Current.satAdj[JudgeBy][Inten],middle);
- }
- P[0] += partial*Current.redAdj[JudgeBy][Inten];
- P[1] += partial*Current.greenAdj[JudgeBy][Inten];
- P[2] += partial*Current.blueAdj[JudgeBy][Inten];
- }
- }
-
- Inten = reduced->hsv[i*RW*bytes + j*bytes + Current.ValueBy]*255.0;
- nudge = partial*nudgeArray[(Inten+Current.Offset)%256];
-
- switch (changewhat) {
- case HUE:
- P[0] += colorSign[RED][changewhich] * nudge;
- P[1] += colorSign[GREEN][changewhich] * nudge;
- P[2] += colorSign[BLUE][changewhich] * nudge;
- break;
-
- case SATURATION:
- for (JudgeBy=BY_HUE; JudgeBy<JUDGE_BY; JudgeBy++)
- for (k=0; k<3; k++)
- if (M!=m) {
- if (backupP[k] == M)
- P[k] = MAX(P[k]+
- partial*tempSat[JudgeBy][Inten],middle);
- else if (backupP[k] == m)
- P[k] = MIN(P[k]-
- partial*tempSat[JudgeBy][Inten],middle);
- }
- break;
-
- case VALUE:
- P[0] += changewhich * nudge;
- P[1] += changewhich * nudge;
- P[2] += changewhich * nudge;
- break;
-
- default:
- break;
- }
-
- a[j*3+0] = MAX(0,MIN(P[0], 255));
- a[j*3+1] = MAX(0,MIN(P[1], 255));
- a[j*3+2] = MAX(0,MIN(P[2], 255));
-
- if (bytes==4)
- for (k=0; k<3; k++) {
- float transp=reduced->rgb[i*RW*bytes+j*bytes+3]/255.0;
- a[3*j+k]=transp*a[3*j+k]+(1-transp)*fp_fake_transparency(i,j);
- }
- }
- gtk_preview_draw_row( GTK_PREVIEW(preview),a,0,i,RW);
- }
-
- free(a);
- gtk_widget_draw(preview,NULL);
- gdk_flush();
- }
-
- void
- Update_Current_FP (gint changewhat,
- gint changewhich)
- {
- int i, nudge;
-
- for (i=0; i<256; i++) {
-
- fp_Create_Nudge(nudgeArray);
- nudge=nudgeArray[(i+Current.Offset)%256];
-
- switch (changewhat) {
- case HUE:
- Current.redAdj[Current.ValueBy][i] +=
- colorSign[RED][changewhich] * nudge;
-
- Current.greenAdj[Current.ValueBy][i] +=
- colorSign[GREEN][changewhich] * nudge;
-
- Current.blueAdj[Current.ValueBy][i] +=
- colorSign[BLUE][changewhich] * nudge;
- break;
-
- case SATURATION:
- Current.satAdj[Current.ValueBy][i] += changewhich*nudge;
- break;
-
- case VALUE:
- Current.redAdj[Current.ValueBy][i] += changewhich * nudge;
- Current.greenAdj[Current.ValueBy][i] += changewhich * nudge;
- Current.blueAdj[Current.ValueBy][i] += changewhich * nudge;
- break;
-
- default:
- break;
- } /* switch */
-
- } /* for */
- }
-
-
- void
- fp_create_smoothness_graph (GtkWidget *preview)
- {
- guchar data[256*3];
- gint nArray[256];
- int i, j, toBeBlack;
-
- fp_Create_Nudge(nArray);
-
- for (i=0; i<MAX_ROUGHNESS; i++)
- {
- int coor=MAX_ROUGHNESS-i;
- for (j=0; j<256; j++) {
- data[3*j+0]=255;
- data[3*j+1]=255;
- data[3*j+2]=255;
- if (!(i%(MAX_ROUGHNESS/4))) {
- data[3*j+0]=255;
- data[3*j+1]=128;
- data[3*j+2]=128;
- }
- if (!((j+1)%32)) {
- data[3*j+0]=255;
- data[3*j+1]=128;
- data[3*j+2]=128;
- }
- toBeBlack=0;
- if (nArray[j]==coor) toBeBlack=1;
-
- if (j<255) {
- int jump=abs(nArray[j]-nArray[j+1]);
- if ( abs(coor-nArray[j]) < jump
- && abs(coor-nArray[j+1]) < jump)
- toBeBlack=1;
- }
- if (toBeBlack) {
- data[3*j+0]=0;
- data[3*j+1]=0;
- data[3*j+2]=0;
- }
- }
- gtk_preview_draw_row( GTK_PREVIEW(preview),data,0,i,256);
- }
- gtk_widget_draw(preview,NULL);
- gdk_flush();
- }
-
- void
- fp_range_preview_spill(GtkWidget *preview, int type)
- {
- guchar data[256*3];
- int i, j;
- hsv R,G,B;
-
- for (i=0; i<RANGE_HEIGHT; i++) {
- for (j=0; j<256; j++)
- if (!((j+1)%32)) {
- data[3*j+0]=255;
- data[3*j+1]=128;
- data[3*j+2]=128;
- }
- else
- switch (type) {
- case BY_VAL:
- data[3*j+0]=j-Current.Offset;
- data[3*j+1]=j-Current.Offset;
- data[3*j+2]=j-Current.Offset;
- break;
- case BY_HUE:
- R = (hsv)((j-Current.Offset+256)%256)/255.0;
- G = 1.0;
- B = .5;
- gimp_hsv_to_rgb_double(&R, &G, &B);
- data[3*j+0]=R*255;
- data[3*j+1]=G*255;
- data[3*j+2]=B*255;
- break;
- case BY_SAT:
- R = .5;
- G = (hsv)((j-(gint)Current.Offset+256)%256)/255.0;
- B = .5;
- gimp_hsv_to_rgb_double(&R,&G,&B);
- data[3*j+0]=R*255;
- data[3*j+1]=G*255;
- data[3*j+2]=B*255;
- break;
- }
- gtk_preview_draw_row( GTK_PREVIEW(preview),data,0,i,256);
- }
- gtk_widget_draw(preview,NULL);
- gdk_flush();
- }
-
-
- void fp_Create_Nudge(gint *adjArray)
- {
- int left, right, middle,i;
- /* The following function was determined by trial and error */
- double Steepness=pow(1-Current.Alias,4)*.8;
-
- left = (Current.Range == SHADOWS) ? 0 : Current.Cutoffs[Current.Range-1];
- right = Current.Cutoffs[Current.Range];
- middle = (left + right)/2;
-
- if (Current.Alias!=0)
- for (i=0; i<256; i++)
- if (i<=middle)
- adjArray[i] = MAX_ROUGHNESS *
- Current.Rough*(1+tanh(Steepness*(i-left)))/2;
- else
- adjArray[i] = MAX_ROUGHNESS *
- Current.Rough*(1+tanh(Steepness*(right-i)))/2;
- else
- for (i=0; i<256; i++)
- if (left<=i && i<=right)
- adjArray[i] = MAX_ROUGHNESS * Current.Rough;
- else
- adjArray[i] = 0;
- }
-
- gint fp_fake_transparency(gint i, gint j)
- {
- if ( ((i%20)- 10) * ((j%20)- 10)>0 )
- return 64;
- else
- return 196;
- }
-