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pbPlots.c
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/* Downloaded from https://repo.progsbase.com - Code Developed Using progsbase. */
#include "pbPlots.h"
#define strparam(str) (str), wcslen(str)
#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
_Bool CropLineWithinBoundary(NumberReference *x1Ref, NumberReference *y1Ref, NumberReference *x2Ref, NumberReference *y2Ref, double xMin, double xMax, double yMin, double yMax){
double x1, y1, x2, y2;
_Bool success, p1In, p2In;
double dx, dy, f1, f2, f3, f4, f;
x1 = x1Ref->numberValue;
y1 = y1Ref->numberValue;
x2 = x2Ref->numberValue;
y2 = y2Ref->numberValue;
p1In = x1 >= xMin && x1 <= xMax && y1 >= yMin && y1 <= yMax;
p2In = x2 >= xMin && x2 <= xMax && y2 >= yMin && y2 <= yMax;
if(p1In && p2In){
success = true;
}else if( !p1In && p2In){
dx = x1 - x2;
dy = y1 - y2;
if(dx != 0.0){
f1 = (xMin - x2)/dx;
f2 = (xMax - x2)/dx;
}else{
f1 = 1.0;
f2 = 1.0;
}
if(dy != 0.0){
f3 = (yMin - y2)/dy;
f4 = (yMax - y2)/dy;
}else{
f3 = 1.0;
f4 = 1.0;
}
if(f1 < 0.0){
f1 = 1.0;
}
if(f2 < 0.0){
f2 = 1.0;
}
if(f3 < 0.0){
f3 = 1.0;
}
if(f4 < 0.0){
f4 = 1.0;
}
f = fmin(f1, fmin(f2, fmin(f3, f4)));
x1 = x2 + f*dx;
y1 = y2 + f*dy;
success = true;
}else if(p1In && !p2In ){
dx = x2 - x1;
dy = y2 - y1;
if(dx != 0.0){
f1 = (xMin - x1)/dx;
f2 = (xMax - x1)/dx;
}else{
f1 = 1.0;
f2 = 1.0;
}
if(dy != 0.0){
f3 = (yMin - y1)/dy;
f4 = (yMax - y1)/dy;
}else{
f3 = 1.0;
f4 = 1.0;
}
if(f1 < 0.0){
f1 = 1.0;
}
if(f2 < 0.0){
f2 = 1.0;
}
if(f3 < 0.0){
f3 = 1.0;
}
if(f4 < 0.0){
f4 = 1.0;
}
f = fmin(f1, fmin(f2, fmin(f3, f4)));
x2 = x1 + f*dx;
y2 = y1 + f*dy;
success = true;
}else{
success = false;
}
x1Ref->numberValue = x1;
y1Ref->numberValue = y1;
x2Ref->numberValue = x2;
y2Ref->numberValue = y2;
return success;
}
double IncrementFromCoordinates(double x1, double y1, double x2, double y2){
return (x2 - x1)/(y2 - y1);
}
double InterceptFromCoordinates(double x1, double y1, double x2, double y2){
double a, b;
a = IncrementFromCoordinates(x1, y1, x2, y2);
b = y1 - a*x1;
return b;
}
RGBA **Get8HighContrastColors(size_t *returnArrayLength){
RGBA **colors;
size_t colorsLength;
colors = (RGBA**)malloc(sizeof(RGBA) * 8.0);
colorsLength = 8.0;
colors[0] = CreateRGBColor(3.0/256.0, 146.0/256.0, 206.0/256.0);
colors[1] = CreateRGBColor(253.0/256.0, 83.0/256.0, 8.0/256.0);
colors[2] = CreateRGBColor(102.0/256.0, 176.0/256.0, 50.0/256.0);
colors[3] = CreateRGBColor(208.0/256.0, 234.0/256.0, 43.0/256.0);
colors[4] = CreateRGBColor(167.0/256.0, 25.0/256.0, 75.0/256.0);
colors[5] = CreateRGBColor(254.0/256.0, 254.0/256.0, 51.0/256.0);
colors[6] = CreateRGBColor(134.0/256.0, 1.0/256.0, 175.0/256.0);
colors[7] = CreateRGBColor(251.0/256.0, 153.0/256.0, 2.0/256.0);
*returnArrayLength = colorsLength;
return colors;
}
void DrawFilledRectangleWithBorder(RGBABitmapImage *image, double x, double y, double w, double h, RGBA *borderColor, RGBA *fillColor){
if(h > 0.0 && w > 0.0){
DrawFilledRectangle(image, x, y, w, h, fillColor);
DrawRectangle1px(image, x, y, w, h, borderColor);
}
}
RGBABitmapImageReference *CreateRGBABitmapImageReference(){
RGBABitmapImageReference *reference;
reference = (RGBABitmapImageReference *)malloc(sizeof(RGBABitmapImageReference));
reference->image = (RGBABitmapImage *)malloc(sizeof(RGBABitmapImage));
reference->image->x = (RGBABitmap**)malloc(sizeof(RGBABitmap) * 0.0);
reference->image->xLength = 0.0;
return reference;
}
_Bool RectanglesOverlap(Rectangle *r1, Rectangle *r2){
_Bool overlap;
overlap = false;
overlap = overlap || (r2->x1 >= r1->x1 && r2->x1 <= r1->x2 && r2->y1 >= r1->y1 && r2->y1 <= r1->y2);
overlap = overlap || (r2->x2 >= r1->x1 && r2->x2 <= r1->x2 && r2->y1 >= r1->y1 && r2->y1 <= r1->y2);
overlap = overlap || (r2->x1 >= r1->x1 && r2->x1 <= r1->x2 && r2->y2 >= r1->y1 && r2->y2 <= r1->y2);
overlap = overlap || (r2->x2 >= r1->x1 && r2->x2 <= r1->x2 && r2->y2 >= r1->y1 && r2->y2 <= r1->y2);
return overlap;
}
Rectangle *CreateRectangle(double x1, double y1, double x2, double y2){
Rectangle *r;
r = (Rectangle *)malloc(sizeof(Rectangle));
r->x1 = x1;
r->y1 = y1;
r->x2 = x2;
r->y2 = y2;
return r;
}
void CopyRectangleValues(Rectangle *rd, Rectangle *rs){
rd->x1 = rs->x1;
rd->y1 = rs->y1;
rd->x2 = rs->x2;
rd->y2 = rs->y2;
}
void DrawXLabelsForPriority(double p, double xMin, double oy, double xMax, double xPixelMin, double xPixelMax, NumberReference *nextRectangle, RGBA *gridLabelColor, RGBABitmapImage *canvas, double *xGridPositions, size_t xGridPositionsLength, StringArrayReference *xLabels, NumberArrayReference *xLabelPriorities, Rectangle **occupied, size_t occupiedLength, _Bool textOnBottom){
_Bool overlap, currentOverlaps;
double i, j, x, px, padding;
wchar_t *text;
size_t textLength;
Rectangle *r;
r = (Rectangle *)malloc(sizeof(Rectangle));
padding = 10.0;
overlap = false;
for(i = 0.0; i < xLabels->stringArrayLength; i = i + 1.0){
if(xLabelPriorities->numberArray[(int)(i)] == p){
x = xGridPositions[(int)(i)];
px = MapXCoordinate(x, xMin, xMax, xPixelMin, xPixelMax);
text = xLabels->stringArray[(int)(i)]->string;
textLength = xLabels->stringArray[(int)(i)]->stringLength;
r->x1 = floor(px - GetTextWidth(text, textLength)/2.0);
if(textOnBottom){
r->y1 = floor(oy + 5.0);
}else{
r->y1 = floor(oy - 20.0);
}
r->x2 = r->x1 + GetTextWidth(text, textLength);
r->y2 = r->y1 + GetTextHeight(text, textLength);
/* Add padding */
r->x1 = r->x1 - padding;
r->y1 = r->y1 - padding;
r->x2 = r->x2 + padding;
r->y2 = r->y2 + padding;
currentOverlaps = false;
for(j = 0.0; j < nextRectangle->numberValue; j = j + 1.0){
currentOverlaps = currentOverlaps || RectanglesOverlap(r, occupied[(int)(j)]);
}
if( !currentOverlaps && p == 1.0){
DrawText(canvas, r->x1 + padding, r->y1 + padding, text, textLength, gridLabelColor);
CopyRectangleValues(occupied[(int)(nextRectangle->numberValue)], r);
nextRectangle->numberValue = nextRectangle->numberValue + 1.0;
}
overlap = overlap || currentOverlaps;
}
}
if( !overlap && p != 1.0){
for(i = 0.0; i < xGridPositionsLength; i = i + 1.0){
x = xGridPositions[(int)(i)];
px = MapXCoordinate(x, xMin, xMax, xPixelMin, xPixelMax);
if(xLabelPriorities->numberArray[(int)(i)] == p){
text = xLabels->stringArray[(int)(i)]->string;
textLength = xLabels->stringArray[(int)(i)]->stringLength;
r->x1 = floor(px - GetTextWidth(text, textLength)/2.0);
if(textOnBottom){
r->y1 = floor(oy + 5.0);
}else{
r->y1 = floor(oy - 20.0);
}
r->x2 = r->x1 + GetTextWidth(text, textLength);
r->y2 = r->y1 + GetTextHeight(text, textLength);
DrawText(canvas, r->x1, r->y1, text, textLength, gridLabelColor);
CopyRectangleValues(occupied[(int)(nextRectangle->numberValue)], r);
nextRectangle->numberValue = nextRectangle->numberValue + 1.0;
}
}
}
}
void DrawYLabelsForPriority(double p, double yMin, double ox, double yMax, double yPixelMin, double yPixelMax, NumberReference *nextRectangle, RGBA *gridLabelColor, RGBABitmapImage *canvas, double *yGridPositions, size_t yGridPositionsLength, StringArrayReference *yLabels, NumberArrayReference *yLabelPriorities, Rectangle **occupied, size_t occupiedLength, _Bool textOnLeft){
_Bool overlap, currentOverlaps;
double i, j, y, py, padding;
wchar_t *text;
size_t textLength;
Rectangle *r;
r = (Rectangle *)malloc(sizeof(Rectangle));
padding = 10.0;
overlap = false;
for(i = 0.0; i < yLabels->stringArrayLength; i = i + 1.0){
if(yLabelPriorities->numberArray[(int)(i)] == p){
y = yGridPositions[(int)(i)];
py = MapYCoordinate(y, yMin, yMax, yPixelMin, yPixelMax);
text = yLabels->stringArray[(int)(i)]->string;
textLength = yLabels->stringArray[(int)(i)]->stringLength;
if(textOnLeft){
r->x1 = floor(ox - GetTextWidth(text, textLength) - 10.0);
}else{
r->x1 = floor(ox + 10.0);
}
r->y1 = floor(py - 6.0);
r->x2 = r->x1 + GetTextWidth(text, textLength);
r->y2 = r->y1 + GetTextHeight(text, textLength);
/* Add padding */
r->x1 = r->x1 - padding;
r->y1 = r->y1 - padding;
r->x2 = r->x2 + padding;
r->y2 = r->y2 + padding;
currentOverlaps = false;
for(j = 0.0; j < nextRectangle->numberValue; j = j + 1.0){
currentOverlaps = currentOverlaps || RectanglesOverlap(r, occupied[(int)(j)]);
}
/* Draw labels with priority 1 if they do not overlap anything else. */
if( !currentOverlaps && p == 1.0){
DrawText(canvas, r->x1 + padding, r->y1 + padding, text, textLength, gridLabelColor);
CopyRectangleValues(occupied[(int)(nextRectangle->numberValue)], r);
nextRectangle->numberValue = nextRectangle->numberValue + 1.0;
}
overlap = overlap || currentOverlaps;
}
}
if( !overlap && p != 1.0){
for(i = 0.0; i < yGridPositionsLength; i = i + 1.0){
y = yGridPositions[(int)(i)];
py = MapYCoordinate(y, yMin, yMax, yPixelMin, yPixelMax);
if(yLabelPriorities->numberArray[(int)(i)] == p){
text = yLabels->stringArray[(int)(i)]->string;
textLength = yLabels->stringArray[(int)(i)]->stringLength;
if(textOnLeft){
r->x1 = floor(ox - GetTextWidth(text, textLength) - 10.0);
}else{
r->x1 = floor(ox + 10.0);
}
r->y1 = floor(py - 6.0);
r->x2 = r->x1 + GetTextWidth(text, textLength);
r->y2 = r->y1 + GetTextHeight(text, textLength);
DrawText(canvas, r->x1, r->y1, text, textLength, gridLabelColor);
CopyRectangleValues(occupied[(int)(nextRectangle->numberValue)], r);
nextRectangle->numberValue = nextRectangle->numberValue + 1.0;
}
}
}
}
double *ComputeGridLinePositions(size_t *returnArrayLength, double cMin, double cMax, StringArrayReference *labels, NumberArrayReference *priorities){
double *positions;
size_t positionsLength;
double cLength, p, pMin, pMax, pInterval, pNum, i, num, rem, priority, mode;
cLength = cMax - cMin;
p = floor(log10(cLength));
pInterval = pow(10.0, p);
/* gives 10-1 lines for 100-10 diff */
pMin = ceil(cMin/pInterval)*pInterval;
pMax = floor(cMax/pInterval)*pInterval;
pNum = Round((pMax - pMin)/pInterval + 1.0);
mode = 1.0;
if(pNum <= 3.0){
p = floor(log10(cLength) - 1.0);
/* gives 100-10 lines for 100-10 diff */
pInterval = pow(10.0, p);
pMin = ceil(cMin/pInterval)*pInterval;
pMax = floor(cMax/pInterval)*pInterval;
pNum = Round((pMax - pMin)/pInterval + 1.0);
mode = 4.0;
}else if(pNum <= 6.0){
p = floor(log10(cLength));
pInterval = pow(10.0, p)/4.0;
/* gives 40-5 lines for 100-10 diff */
pMin = ceil(cMin/pInterval)*pInterval;
pMax = floor(cMax/pInterval)*pInterval;
pNum = Round((pMax - pMin)/pInterval + 1.0);
mode = 3.0;
}else if(pNum <= 10.0){
p = floor(log10(cLength));
pInterval = pow(10.0, p)/2.0;
/* gives 20-3 lines for 100-10 diff */
pMin = ceil(cMin/pInterval)*pInterval;
pMax = floor(cMax/pInterval)*pInterval;
pNum = Round((pMax - pMin)/pInterval + 1.0);
mode = 2.0;
}
positions = (double*)malloc(sizeof(double) * (pNum));
positionsLength = pNum;
labels->stringArray = (StringReference**)malloc(sizeof(StringReference) * pNum);
labels->stringArrayLength = pNum;
priorities->numberArray = (double*)malloc(sizeof(double) * (pNum));
priorities->numberArrayLength = pNum;
for(i = 0.0; i < pNum; i = i + 1.0){
num = pMin + pInterval*i;
positions[(int)(i)] = num;
/* Always print priority 1 labels. Only draw priority 2 if they can all be drawn. Then, only draw priority 3 if they can all be drawn. */
priority = 1.0;
/* Prioritize x.25, x.5 and x.75 lower. */
if(mode == 2.0 || mode == 3.0){
rem = fmod(fabs(round(num/pow(10.0, p - 2.0))), 100.0);
priority = 1.0;
if(rem == 50.0){
priority = 2.0;
}else if(rem == 25.0 || rem == 75.0){
priority = 3.0;
}
}
/* Prioritize x.1-x.4 and x.6-x.9 lower */
if(mode == 4.0){
rem = fmod(fabs(Round(num/pow(10.0, p))), 10.0);
priority = 1.0;
if(rem == 1.0 || rem == 2.0 || rem == 3.0 || rem == 4.0 || rem == 6.0 || rem == 7.0 || rem == 8.0 || rem == 9.0){
priority = 2.0;
}
}
/* 0 has lowest priority. */
if(EpsilonCompare(num, 0.0, pow(10.0, p - 5.0))){
priority = 3.0;
}
priorities->numberArray[(int)(i)] = priority;
/* The label itself. */
labels->stringArray[(int)(i)] = (StringReference *)malloc(sizeof(StringReference));
if(p < 0.0){
if(mode == 2.0 || mode == 3.0){
num = RoundToDigits(num, -(p - 1.0));
}else{
num = RoundToDigits(num, -p);
}
}
labels->stringArray[(int)(i)]->string = CreateStringDecimalFromNumber(&labels->stringArray[(int)(i)]->stringLength, num);
}
*returnArrayLength = positionsLength;
return positions;
}
double MapYCoordinate(double y, double yMin, double yMax, double yPixelMin, double yPixelMax){
double yLength, yPixelLength;
yLength = yMax - yMin;
yPixelLength = yPixelMax - yPixelMin;
y = y - yMin;
y = y*yPixelLength/yLength;
y = yPixelLength - y;
y = y + yPixelMin;
return y;
}
double MapXCoordinate(double x, double xMin, double xMax, double xPixelMin, double xPixelMax){
double xLength, xPixelLength;
xLength = xMax - xMin;
xPixelLength = xPixelMax - xPixelMin;
x = x - xMin;
x = x*xPixelLength/xLength;
x = x + xPixelMin;
return x;
}
double MapXCoordinateAutoSettings(double x, RGBABitmapImage *image, double *xs, size_t xsLength){
return MapXCoordinate(x, GetMinimum(xs, xsLength), GetMaximum(xs, xsLength), GetDefaultPaddingPercentage()*ImageWidth(image), (1.0 - GetDefaultPaddingPercentage())*ImageWidth(image));
}
double MapYCoordinateAutoSettings(double y, RGBABitmapImage *image, double *ys, size_t ysLength){
return MapYCoordinate(y, GetMinimum(ys, ysLength), GetMaximum(ys, ysLength), GetDefaultPaddingPercentage()*ImageHeight(image), (1.0 - GetDefaultPaddingPercentage())*ImageHeight(image));
}
double MapXCoordinateBasedOnSettings(double x, ScatterPlotSettings *settings){
double xMin, xMax, xPadding, xPixelMin, xPixelMax;
Rectangle *boundaries;
boundaries = (Rectangle *)malloc(sizeof(Rectangle));
ComputeBoundariesBasedOnSettings(settings, boundaries);
xMin = boundaries->x1;
xMax = boundaries->x2;
if(settings->autoPadding){
xPadding = floor(GetDefaultPaddingPercentage()*settings->width);
}else{
xPadding = settings->xPadding;
}
xPixelMin = xPadding;
xPixelMax = settings->width - xPadding;
return MapXCoordinate(x, xMin, xMax, xPixelMin, xPixelMax);
}
double MapYCoordinateBasedOnSettings(double y, ScatterPlotSettings *settings){
double yMin, yMax, yPadding, yPixelMin, yPixelMax;
Rectangle *boundaries;
boundaries = (Rectangle *)malloc(sizeof(Rectangle));
ComputeBoundariesBasedOnSettings(settings, boundaries);
yMin = boundaries->y1;
yMax = boundaries->y2;
if(settings->autoPadding){
yPadding = floor(GetDefaultPaddingPercentage()*settings->height);
}else{
yPadding = settings->yPadding;
}
yPixelMin = yPadding;
yPixelMax = settings->height - yPadding;
return MapYCoordinate(y, yMin, yMax, yPixelMin, yPixelMax);
}
double GetDefaultPaddingPercentage(){
return 0.10;
}
void DrawText(RGBABitmapImage *canvas, double x, double y, wchar_t *text, size_t textLength, RGBA *color){
double i, charWidth, spacing;
charWidth = 8.0;
spacing = 2.0;
for(i = 0.0; i < textLength; i = i + 1.0){
DrawAsciiCharacter(canvas, x + i*(charWidth + spacing), y, text[(int)(i)], color);
}
}
void DrawTextUpwards(RGBABitmapImage *canvas, double x, double y, wchar_t *text, size_t textLength, RGBA *color){
RGBABitmapImage *buffer, *rotated;
buffer = CreateImage(GetTextWidth(text, textLength), GetTextHeight(text, textLength), GetTransparent());
DrawText(buffer, 0.0, 0.0, text, textLength, color);
rotated = RotateAntiClockwise90Degrees(buffer);
DrawImageOnImage(canvas, rotated, x, y);
DeleteImage(buffer);
DeleteImage(rotated);
}
ScatterPlotSettings *GetDefaultScatterPlotSettings(){
ScatterPlotSettings *settings;
settings = (ScatterPlotSettings *)malloc(sizeof(ScatterPlotSettings));
settings->autoBoundaries = true;
settings->xMax = 0.0;
settings->xMin = 0.0;
settings->yMax = 0.0;
settings->yMin = 0.0;
settings->autoPadding = true;
settings->xPadding = 0.0;
settings->yPadding = 0.0;
settings->title = L"";
settings->titleLength = wcslen(settings->title);
settings->xLabel = L"";
settings->xLabelLength = wcslen(settings->xLabel);
settings->yLabel = L"";
settings->yLabelLength = wcslen(settings->yLabel);
settings->scatterPlotSeries = (ScatterPlotSeries**)malloc(sizeof(ScatterPlotSeries) * 0.0);
settings->scatterPlotSeriesLength = 0.0;
settings->showGrid = true;
settings->gridColor = GetGray(0.1);
settings->xAxisAuto = true;
settings->xAxisTop = false;
settings->xAxisBottom = false;
settings->yAxisAuto = true;
settings->yAxisLeft = false;
settings->yAxisRight = false;
return settings;
}
ScatterPlotSeries *GetDefaultScatterPlotSeriesSettings(){
ScatterPlotSeries *series;
series = (ScatterPlotSeries *)malloc(sizeof(ScatterPlotSeries));
series->linearInterpolation = true;
series->pointType = L"pixels";
series->pointTypeLength = wcslen(series->pointType);
series->lineType = L"solid";
series->lineTypeLength = wcslen(series->lineType);
series->lineThickness = 1.0;
series->xs = (double*)malloc(sizeof(double) * (0.0));
series->xsLength = 0.0;
series->ys = (double*)malloc(sizeof(double) * (0.0));
series->ysLength = 0.0;
series->color = GetBlack();
return series;
}
void DrawScatterPlot(RGBABitmapImageReference *canvasReference, double width, double height, double *xs, size_t xsLength, double *ys, size_t ysLength){
ScatterPlotSettings *settings;
settings = GetDefaultScatterPlotSettings();
settings->width = width;
settings->height = height;
settings->scatterPlotSeries = (ScatterPlotSeries**)malloc(sizeof(ScatterPlotSeries) * 1.0);
settings->scatterPlotSeriesLength = 1.0;
settings->scatterPlotSeries[0] = GetDefaultScatterPlotSeriesSettings();
free(settings->scatterPlotSeries[0]->xs);
settings->scatterPlotSeries[0]->xs = xs;
settings->scatterPlotSeries[0]->xsLength = xsLength;
free(settings->scatterPlotSeries[0]->ys);
settings->scatterPlotSeries[0]->ys = ys;
settings->scatterPlotSeries[0]->ysLength = ysLength;
DrawScatterPlotFromSettings(canvasReference, settings);
}
_Bool DrawScatterPlotFromSettings(RGBABitmapImageReference *canvasReference, ScatterPlotSettings *settings){
double xMin, xMax, yMin, yMax, xLength, yLength, i, x, y, xPrev, yPrev, px, py, pxPrev, pyPrev, originX, originY, p, l, plot;
Rectangle *boundaries;
double xPadding, yPadding, originXPixels, originYPixels;
double xPixelMin, yPixelMin, xPixelMax, yPixelMax, xLengthPixels, yLengthPixels, axisLabelPadding;
NumberReference *nextRectangle, *x1Ref, *y1Ref, *x2Ref, *y2Ref, *patternOffset;
_Bool prevSet, success;
RGBA *gridLabelColor;
RGBABitmapImage *canvas;
double *xs, *ys;
size_t xsLength, ysLength;
_Bool linearInterpolation;
ScatterPlotSeries *sp;
double *xGridPositions, *yGridPositions;
size_t xGridPositionsLength, yGridPositionsLength;
StringArrayReference *xLabels, *yLabels;
NumberArrayReference *xLabelPriorities, *yLabelPriorities;
Rectangle **occupied;
size_t occupiedLength;
_Bool *linePattern;
size_t linePatternLength;
_Bool originXInside, originYInside, textOnLeft, textOnBottom;
double originTextX, originTextY, originTextXPixels, originTextYPixels, side;
canvas = CreateImage(settings->width, settings->height, GetWhite());
patternOffset = CreateNumberReference(0.0);
success = ScatterPlotFromSettingsValid(settings);
if(success){
boundaries = (Rectangle *)malloc(sizeof(Rectangle));
ComputeBoundariesBasedOnSettings(settings, boundaries);
xMin = boundaries->x1;
yMin = boundaries->y1;
xMax = boundaries->x2;
yMax = boundaries->y2;
xLength = xMax - xMin;
yLength = yMax - yMin;
if(settings->autoPadding){
xPadding = floor(GetDefaultPaddingPercentage()*settings->width);
yPadding = floor(GetDefaultPaddingPercentage()*settings->height);
}else{
xPadding = settings->xPadding;
yPadding = settings->yPadding;
}
/* Draw title */
DrawText(canvas, floor(settings->width/2.0 - GetTextWidth(settings->title, settings->titleLength)/2.0), floor(yPadding/3.0), settings->title, settings->titleLength, GetBlack());
/* Draw grid */
xPixelMin = xPadding;
yPixelMin = yPadding;
xPixelMax = settings->width - xPadding;
yPixelMax = settings->height - yPadding;
xLengthPixels = xPixelMax - xPixelMin;
yLengthPixels = yPixelMax - yPixelMin;
DrawRectangle1px(canvas, xPixelMin, yPixelMin, xLengthPixels, yLengthPixels, settings->gridColor);
gridLabelColor = GetGray(0.5);
xLabels = (StringArrayReference *)malloc(sizeof(StringArrayReference));
xLabelPriorities = (NumberArrayReference *)malloc(sizeof(NumberArrayReference));
yLabels = (StringArrayReference *)malloc(sizeof(StringArrayReference));
yLabelPriorities = (NumberArrayReference *)malloc(sizeof(NumberArrayReference));
xGridPositions = ComputeGridLinePositions(&xGridPositionsLength, xMin, xMax, xLabels, xLabelPriorities);
yGridPositions = ComputeGridLinePositions(&yGridPositionsLength, yMin, yMax, yLabels, yLabelPriorities);
if(settings->showGrid){
/* X-grid */
for(i = 0.0; i < xGridPositionsLength; i = i + 1.0){
x = xGridPositions[(int)(i)];
px = MapXCoordinate(x, xMin, xMax, xPixelMin, xPixelMax);
DrawLine1px(canvas, px, yPixelMin, px, yPixelMax, settings->gridColor);
}
/* Y-grid */
for(i = 0.0; i < yGridPositionsLength; i = i + 1.0){
y = yGridPositions[(int)(i)];
py = MapYCoordinate(y, yMin, yMax, yPixelMin, yPixelMax);
DrawLine1px(canvas, xPixelMin, py, xPixelMax, py, settings->gridColor);
}
}
/* Compute origin information. */
originYInside = yMin < 0.0 && yMax > 0.0;
originY = 0.0;
if(settings->xAxisAuto){
if(originYInside){
originY = 0.0;
}else{
originY = yMin;
}
}else{
if(settings->xAxisTop){
originY = yMax;
}
if(settings->xAxisBottom){
originY = yMin;
}
}
originYPixels = MapYCoordinate(originY, yMin, yMax, yPixelMin, yPixelMax);
originXInside = xMin < 0.0 && xMax > 0.0;
originX = 0.0;
if(settings->yAxisAuto){
if(originXInside){
originX = 0.0;
}else{
originX = xMin;
}
}else{
if(settings->yAxisLeft){
originX = xMin;
}
if(settings->yAxisRight){
originX = xMax;
}
}
originXPixels = MapXCoordinate(originX, xMin, xMax, xPixelMin, xPixelMax);
if(originYInside){
originTextY = 0.0;
}else{
originTextY = yMin + yLength/2.0;
}
originTextYPixels = MapYCoordinate(originTextY, yMin, yMax, yPixelMin, yPixelMax);
if(originXInside){
originTextX = 0.0;
}else{
originTextX = xMin + xLength/2.0;
}
originTextXPixels = MapXCoordinate(originTextX, xMin, xMax, xPixelMin, xPixelMax);
/* Labels */
occupied = (Rectangle**)malloc(sizeof(Rectangle) * xLabels->stringArrayLength + yLabels->stringArrayLength);
occupiedLength = xLabels->stringArrayLength + yLabels->stringArrayLength;
for(i = 0.0; i < occupiedLength; i = i + 1.0){
occupied[(int)(i)] = CreateRectangle(0.0, 0.0, 0.0, 0.0);
}
nextRectangle = CreateNumberReference(0.0);
/* x labels */
for(i = 1.0; i <= 5.0; i = i + 1.0){
textOnBottom = true;
if( !settings->xAxisAuto && settings->xAxisTop){
textOnBottom = false;
}
DrawXLabelsForPriority(i, xMin, originYPixels, xMax, xPixelMin, xPixelMax, nextRectangle, gridLabelColor, canvas, xGridPositions, xGridPositionsLength, xLabels, xLabelPriorities, occupied, occupiedLength, textOnBottom);
}
/* y labels */
for(i = 1.0; i <= 5.0; i = i + 1.0){
textOnLeft = true;
if( !settings->yAxisAuto && settings->yAxisRight){
textOnLeft = false;
}
DrawYLabelsForPriority(i, yMin, originXPixels, yMax, yPixelMin, yPixelMax, nextRectangle, gridLabelColor, canvas, yGridPositions, yGridPositionsLength, yLabels, yLabelPriorities, occupied, occupiedLength, textOnLeft);
}
/* Draw origin line axis titles. */
axisLabelPadding = 20.0;
/* x origin line */
if(originYInside){
DrawLine1px(canvas, Round(xPixelMin), Round(originYPixels), Round(xPixelMax), Round(originYPixels), GetBlack());
}
/* y origin line */
if(originXInside){
DrawLine1px(canvas, Round(originXPixels), Round(yPixelMin), Round(originXPixels), Round(yPixelMax), GetBlack());
}
/* Draw origin axis titles. */
DrawTextUpwards(canvas, 10.0, floor(originTextYPixels - GetTextWidth(settings->yLabel, settings->yLabelLength)/2.0), settings->yLabel, settings->yLabelLength, GetBlack());
DrawText(canvas, floor(originTextXPixels - GetTextWidth(settings->xLabel, settings->xLabelLength)/2.0), yPixelMax + axisLabelPadding, settings->xLabel, settings->xLabelLength, GetBlack());
/* X-grid-markers */
for(i = 0.0; i < xGridPositionsLength; i = i + 1.0){
x = xGridPositions[(int)(i)];
px = MapXCoordinate(x, xMin, xMax, xPixelMin, xPixelMax);
p = xLabelPriorities->numberArray[(int)(i)];
l = 1.0;
if(p == 1.0){
l = 8.0;
}else if(p == 2.0){
l = 3.0;
}
side = -1.0;
if( !settings->xAxisAuto && settings->xAxisTop){
side = 1.0;
}
DrawLine1px(canvas, px, originYPixels, px, originYPixels + side*l, GetBlack());
}
/* Y-grid-markers */
for(i = 0.0; i < yGridPositionsLength; i = i + 1.0){
y = yGridPositions[(int)(i)];
py = MapYCoordinate(y, yMin, yMax, yPixelMin, yPixelMax);
p = yLabelPriorities->numberArray[(int)(i)];
l = 1.0;
if(p == 1.0){
l = 8.0;
}else if(p == 2.0){
l = 3.0;
}
side = 1.0;
if( !settings->yAxisAuto && settings->yAxisRight){
side = -1.0;
}
DrawLine1px(canvas, originXPixels, py, originXPixels + side*l, py, GetBlack());
}
/* Draw points */
for(plot = 0.0; plot < settings->scatterPlotSeriesLength; plot = plot + 1.0){
sp = settings->scatterPlotSeries[(int)(plot)];
xs = sp->xs;
xsLength = sp->xsLength;
ys = sp->ys;
ysLength = sp->ysLength;
linearInterpolation = sp->linearInterpolation;
x1Ref = (NumberReference *)malloc(sizeof(NumberReference));
y1Ref = (NumberReference *)malloc(sizeof(NumberReference));
x2Ref = (NumberReference *)malloc(sizeof(NumberReference));
y2Ref = (NumberReference *)malloc(sizeof(NumberReference));
if(linearInterpolation){
prevSet = false;
xPrev = 0.0;
yPrev = 0.0;
for(i = 0.0; i < xsLength; i = i + 1.0){
x = xs[(int)(i)];
y = ys[(int)(i)];
if(prevSet){
x1Ref->numberValue = xPrev;
y1Ref->numberValue = yPrev;
x2Ref->numberValue = x;
y2Ref->numberValue = y;
success = CropLineWithinBoundary(x1Ref, y1Ref, x2Ref, y2Ref, xMin, xMax, yMin, yMax);
if(success){
pxPrev = floor(MapXCoordinate(x1Ref->numberValue, xMin, xMax, xPixelMin, xPixelMax));
pyPrev = floor(MapYCoordinate(y1Ref->numberValue, yMin, yMax, yPixelMin, yPixelMax));
px = floor(MapXCoordinate(x2Ref->numberValue, xMin, xMax, xPixelMin, xPixelMax));
py = floor(MapYCoordinate(y2Ref->numberValue, yMin, yMax, yPixelMin, yPixelMax));
if(aStringsEqual(sp->lineType, sp->lineTypeLength, strparam(L"solid")) && sp->lineThickness == 1.0){
DrawLine1px(canvas, pxPrev, pyPrev, px, py, sp->color);
}else if(aStringsEqual(sp->lineType, sp->lineTypeLength, strparam(L"solid"))){
DrawLine(canvas, pxPrev, pyPrev, px, py, sp->lineThickness, sp->color);
}else if(aStringsEqual(sp->lineType, sp->lineTypeLength, strparam(L"dashed"))){
linePattern = GetLinePattern1(&linePatternLength);
DrawLineBresenhamsAlgorithmThickPatterned(canvas, pxPrev, pyPrev, px, py, sp->lineThickness, linePattern, linePatternLength, patternOffset, sp->color);
}else if(aStringsEqual(sp->lineType, sp->lineTypeLength, strparam(L"dotted"))){
linePattern = GetLinePattern2(&linePatternLength);
DrawLineBresenhamsAlgorithmThickPatterned(canvas, pxPrev, pyPrev, px, py, sp->lineThickness, linePattern, linePatternLength, patternOffset, sp->color);
}else if(aStringsEqual(sp->lineType, sp->lineTypeLength, strparam(L"dotdash"))){
linePattern = GetLinePattern3(&linePatternLength);
DrawLineBresenhamsAlgorithmThickPatterned(canvas, pxPrev, pyPrev, px, py, sp->lineThickness, linePattern, linePatternLength, patternOffset, sp->color);
}else if(aStringsEqual(sp->lineType, sp->lineTypeLength, strparam(L"longdash"))){
linePattern = GetLinePattern4(&linePatternLength);
DrawLineBresenhamsAlgorithmThickPatterned(canvas, pxPrev, pyPrev, px, py, sp->lineThickness, linePattern, linePatternLength, patternOffset, sp->color);
}else if(aStringsEqual(sp->lineType, sp->lineTypeLength, strparam(L"twodash"))){
linePattern = GetLinePattern5(&linePatternLength);
DrawLineBresenhamsAlgorithmThickPatterned(canvas, pxPrev, pyPrev, px, py, sp->lineThickness, linePattern, linePatternLength, patternOffset, sp->color);
}
}
}
prevSet = true;
xPrev = x;
yPrev = y;
}
}else{
for(i = 0.0; i < xsLength; i = i + 1.0){
x = xs[(int)(i)];
y = ys[(int)(i)];
if(x > xMin && x < xMax && y > yMin && y < yMax){
x = floor(MapXCoordinate(x, xMin, xMax, xPixelMin, xPixelMax));
y = floor(MapYCoordinate(y, yMin, yMax, yPixelMin, yPixelMax));
if(aStringsEqual(sp->pointType, sp->pointTypeLength, strparam(L"crosses"))){
DrawPixel(canvas, x, y, sp->color);
DrawPixel(canvas, x + 1.0, y, sp->color);
DrawPixel(canvas, x + 2.0, y, sp->color);
DrawPixel(canvas, x - 1.0, y, sp->color);
DrawPixel(canvas, x - 2.0, y, sp->color);
DrawPixel(canvas, x, y + 1.0, sp->color);
DrawPixel(canvas, x, y + 2.0, sp->color);
DrawPixel(canvas, x, y - 1.0, sp->color);
DrawPixel(canvas, x, y - 2.0, sp->color);
}else if(aStringsEqual(sp->pointType, sp->pointTypeLength, strparam(L"circles"))){
DrawCircle(canvas, x, y, 3.0, sp->color);
}else if(aStringsEqual(sp->pointType, sp->pointTypeLength, strparam(L"dots"))){
DrawFilledCircle(canvas, x, y, 3.0, sp->color);
}else if(aStringsEqual(sp->pointType, sp->pointTypeLength, strparam(L"triangles"))){
DrawTriangle(canvas, x, y, 3.0, sp->color);
}else if(aStringsEqual(sp->pointType, sp->pointTypeLength, strparam(L"filled triangles"))){
DrawFilledTriangle(canvas, x, y, 3.0, sp->color);
}else if(aStringsEqual(sp->pointType, sp->pointTypeLength, strparam(L"pixels"))){
DrawPixel(canvas, x, y, sp->color);
}
}
}
}
}
DeleteImage(canvasReference->image);
canvasReference->image = canvas;
}
return success;
}
void ComputeBoundariesBasedOnSettings(ScatterPlotSettings *settings, Rectangle *boundaries){
ScatterPlotSeries *sp;
double plot, xMin, xMax, yMin, yMax;
if(settings->scatterPlotSeriesLength >= 1.0){
xMin = GetMinimum(settings->scatterPlotSeries[0]->xs, settings->scatterPlotSeries[0]->xsLength);
xMax = GetMaximum(settings->scatterPlotSeries[0]->xs, settings->scatterPlotSeries[0]->xsLength);
yMin = GetMinimum(settings->scatterPlotSeries[0]->ys, settings->scatterPlotSeries[0]->ysLength);
yMax = GetMaximum(settings->scatterPlotSeries[0]->ys, settings->scatterPlotSeries[0]->ysLength);
}else{
xMin = -10.0;
xMax = 10.0;
yMin = -10.0;
yMax = 10.0;
}
if( !settings->autoBoundaries ){
xMin = settings->xMin;
xMax = settings->xMax;
yMin = settings->yMin;
yMax = settings->yMax;
}else{
for(plot = 1.0; plot < settings->scatterPlotSeriesLength; plot = plot + 1.0){
sp = settings->scatterPlotSeries[(int)(plot)];
xMin = fmin(xMin, GetMinimum(sp->xs, sp->xsLength));
xMax = fmax(xMax, GetMaximum(sp->xs, sp->xsLength));
yMin = fmin(yMin, GetMinimum(sp->ys, sp->ysLength));
yMax = fmax(yMax, GetMaximum(sp->ys, sp->ysLength));
}
}
boundaries->x1 = xMin;
boundaries->y1 = yMin;
boundaries->x2 = xMax;
boundaries->y2 = yMax;
}
_Bool ScatterPlotFromSettingsValid(ScatterPlotSettings *settings){
_Bool success, found;
ScatterPlotSeries *series;
double i;
success = true;
/* Check axis placement. */
if( !settings->xAxisAuto ){
if(settings->xAxisTop && settings->xAxisBottom){
success = false;
}
if( !settings->xAxisTop && !settings->xAxisBottom ){
success = false;
}
}
if( !settings->yAxisAuto ){
if(settings->yAxisLeft && settings->yAxisRight){
success = false;
}
if( !settings->yAxisLeft && !settings->yAxisRight ){
success = false;
}
}
/* Check series lengths. */
for(i = 0.0; i < settings->scatterPlotSeriesLength; i = i + 1.0){
series = settings->scatterPlotSeries[(int)(i)];
if(series->xsLength != series->ysLength){
success = false;
}
if(series->xsLength == 0.0){
success = false;
}
if(series->linearInterpolation && series->xsLength == 1.0){
success = false;
}
}
/* Check bounds. */
if( !settings->autoBoundaries ){