#include "render-sdf.h"
#include "arithmetics.hpp"
#include "DistanceMapping.h"
#include "pixel-conversion.hpp"
#include "bitmap-interpolation.hpp"
namespace msdfgen {
static float distVal(float dist, DistanceMapping mapping) {
return (float) clamp(mapping(dist)+.5);
}
void renderSDF(const BitmapSection<float, 1> &output, const BitmapConstSection<float, 1> &sdf, Range sdfPxRange, float sdThreshold) {
Vector2 scale((double) sdf.width/output.width, (double) sdf.height/output.height);
if (sdfPxRange.lower == sdfPxRange.upper) {
for (int y = 0; y < output.height; ++y) {
for (int x = 0; x < output.width; ++x) {
float sd;
interpolate(&sd, sdf, scale*Point2(x+.5, y+.5));
*output(x, y) = float(sd >= sdThreshold);
}
}
} else {
sdfPxRange *= (double) (output.width+output.height)/(sdf.width+sdf.height);
DistanceMapping distanceMapping = DistanceMapping::inverse(sdfPxRange);
float sdBias = .5f-sdThreshold;
for (int y = 0; y < output.height; ++y) {
for (int x = 0; x < output.width; ++x) {
float sd;
interpolate(&sd, sdf, scale*Point2(x+.5, y+.5));
*output(x, y) = distVal(sd+sdBias, distanceMapping);
}
}
}
}
void renderSDF(const BitmapSection<float, 3> &output, const BitmapConstSection<float, 1> &sdf, Range sdfPxRange, float sdThreshold) {
Vector2 scale((double) sdf.width/output.width, (double) sdf.height/output.height);
if (sdfPxRange.lower == sdfPxRange.upper) {
for (int y = 0; y < output.height; ++y) {
for (int x = 0; x < output.width; ++x) {
float sd;
interpolate(&sd, sdf, scale*Point2(x+.5, y+.5));
float v = float(sd >= sdThreshold);
output(x, y)[0] = v;
output(x, y)[1] = v;
output(x, y)[2] = v;
}
}
} else {
sdfPxRange *= (double) (output.width+output.height)/(sdf.width+sdf.height);
DistanceMapping distanceMapping = DistanceMapping::inverse(sdfPxRange);
float sdBias = .5f-sdThreshold;
for (int y = 0; y < output.height; ++y) {
for (int x = 0; x < output.width; ++x) {
float sd;
interpolate(&sd, sdf, scale*Point2(x+.5, y+.5));
float v = distVal(sd+sdBias, distanceMapping);
output(x, y)[0] = v;
output(x, y)[1] = v;
output(x, y)[2] = v;
}
}
}
}
void renderSDF(const BitmapSection<float, 1> &output, const BitmapConstSection<float, 3> &sdf, Range sdfPxRange, float sdThreshold) {
Vector2 scale((double) sdf.width/output.width, (double) sdf.height/output.height);
if (sdfPxRange.lower == sdfPxRange.upper) {
for (int y = 0; y < output.height; ++y) {
for (int x = 0; x < output.width; ++x) {
float sd[3];
interpolate(sd, sdf, scale*Point2(x+.5, y+.5));
*output(x, y) = float(median(sd[0], sd[1], sd[2]) >= sdThreshold);
}
}
} else {
sdfPxRange *= (double) (output.width+output.height)/(sdf.width+sdf.height);
DistanceMapping distanceMapping = DistanceMapping::inverse(sdfPxRange);
float sdBias = .5f-sdThreshold;
for (int y = 0; y < output.height; ++y) {
for (int x = 0; x < output.width; ++x) {
float sd[3];
interpolate(sd, sdf, scale*Point2(x+.5, y+.5));
*output(x, y) = distVal(median(sd[0], sd[1], sd[2])+sdBias, distanceMapping);
}
}
}
}
void renderSDF(const BitmapSection<float, 3> &output, const BitmapConstSection<float, 3> &sdf, Range sdfPxRange, float sdThreshold) {
Vector2 scale((double) sdf.width/output.width, (double) sdf.height/output.height);
if (sdfPxRange.lower == sdfPxRange.upper) {
for (int y = 0; y < output.height; ++y) {
for (int x = 0; x < output.width; ++x) {
float sd[3];
interpolate(sd, sdf, scale*Point2(x+.5, y+.5));
output(x, y)[0] = float(sd[0] >= sdThreshold);
output(x, y)[1] = float(sd[1] >= sdThreshold);
output(x, y)[2] = float(sd[2] >= sdThreshold);
}
}
} else {
sdfPxRange *= (double) (output.width+output.height)/(sdf.width+sdf.height);
DistanceMapping distanceMapping = DistanceMapping::inverse(sdfPxRange);
float sdBias = .5f-sdThreshold;
for (int y = 0; y < output.height; ++y) {
for (int x = 0; x < output.width; ++x) {
float sd[3];
interpolate(sd, sdf, scale*Point2(x+.5, y+.5));
output(x, y)[0] = distVal(sd[0]+sdBias, distanceMapping);
output(x, y)[1] = distVal(sd[1]+sdBias, distanceMapping);
output(x, y)[2] = distVal(sd[2]+sdBias, distanceMapping);
}
}
}
}
void renderSDF(const BitmapSection<float, 1> &output, const BitmapConstSection<float, 4> &sdf, Range sdfPxRange, float sdThreshold) {
Vector2 scale((double) sdf.width/output.width, (double) sdf.height/output.height);
if (sdfPxRange.lower == sdfPxRange.upper) {
for (int y = 0; y < output.height; ++y) {
for (int x = 0; x < output.width; ++x) {
float sd[4];
interpolate(sd, sdf, scale*Point2(x+.5, y+.5));
*output(x, y) = float(median(sd[0], sd[1], sd[2]) >= sdThreshold);
}
}
} else {
sdfPxRange *= (double) (output.width+output.height)/(sdf.width+sdf.height);
DistanceMapping distanceMapping = DistanceMapping::inverse(sdfPxRange);
float sdBias = .5f-sdThreshold;
for (int y = 0; y < output.height; ++y) {
for (int x = 0; x < output.width; ++x) {
float sd[4];
interpolate(sd, sdf, scale*Point2(x+.5, y+.5));
*output(x, y) = distVal(median(sd[0], sd[1], sd[2])+sdBias, distanceMapping);
}
}
}
}
void renderSDF(const BitmapSection<float, 4> &output, const BitmapConstSection<float, 4> &sdf, Range sdfPxRange, float sdThreshold) {
Vector2 scale((double) sdf.width/output.width, (double) sdf.height/output.height);
if (sdfPxRange.lower == sdfPxRange.upper) {
for (int y = 0; y < output.height; ++y) {
for (int x = 0; x < output.width; ++x) {
float sd[4];
interpolate(sd, sdf, scale*Point2(x+.5, y+.5));
output(x, y)[0] = float(sd[0] >= sdThreshold);
output(x, y)[1] = float(sd[1] >= sdThreshold);
output(x, y)[2] = float(sd[2] >= sdThreshold);
output(x, y)[3] = float(sd[3] >= sdThreshold);
}
}
} else {
sdfPxRange *= (double) (output.width+output.height)/(sdf.width+sdf.height);
DistanceMapping distanceMapping = DistanceMapping::inverse(sdfPxRange);
float sdBias = .5f-sdThreshold;
for (int y = 0; y < output.height; ++y) {
for (int x = 0; x < output.width; ++x) {
float sd[4];
interpolate(sd, sdf, scale*Point2(x+.5, y+.5));
output(x, y)[0] = distVal(sd[0]+sdBias, distanceMapping);
output(x, y)[1] = distVal(sd[1]+sdBias, distanceMapping);
output(x, y)[2] = distVal(sd[2]+sdBias, distanceMapping);
output(x, y)[3] = distVal(sd[3]+sdBias, distanceMapping);
}
}
}
}
void simulate8bit(const BitmapSection<float, 1> &bitmap) {
const float *end = bitmap.pixels+1*bitmap.width*bitmap.height;
for (float *p = bitmap.pixels; p < end; ++p)
*p = pixelByteToFloat(pixelFloatToByte(*p));
}
void simulate8bit(const BitmapSection<float, 3> &bitmap) {
const float *end = bitmap.pixels+3*bitmap.width*bitmap.height;
for (float *p = bitmap.pixels; p < end; ++p)
*p = pixelByteToFloat(pixelFloatToByte(*p));
}
void simulate8bit(const BitmapSection<float, 4> &bitmap) {
const float *end = bitmap.pixels+4*bitmap.width*bitmap.height;
for (float *p = bitmap.pixels; p < end; ++p)
*p = pixelByteToFloat(pixelFloatToByte(*p));
}
}