85 lines
3 KiB
C++
85 lines
3 KiB
C++
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#pragma once
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namespace nall {
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auto image::fill(uint64_t color) -> void {
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for(unsigned y = 0; y < _height; y++) {
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uint8_t* dp = _data + pitch() * y;
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for(unsigned x = 0; x < _width; x++) {
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write(dp, color);
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dp += stride();
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}
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}
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}
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auto image::gradient(uint64_t a, uint64_t b, uint64_t c, uint64_t d) -> void {
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for(unsigned y = 0; y < _height; y++) {
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uint8_t* dp = _data + pitch() * y;
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double muY = (double)y / (double)_height;
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for(unsigned x = 0; x < _width; x++) {
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double muX = (double)x / (double)_width;
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write(dp, interpolate4f(a, b, c, d, muX, muY));
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dp += stride();
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}
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}
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}
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auto image::gradient(uint64_t a, uint64_t b, signed radiusX, signed radiusY, signed centerX, signed centerY, function<double (double, double)> callback) -> void {
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for(signed y = 0; y < _height; y++) {
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uint8_t* dp = _data + pitch() * y;
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double py = max(-radiusY, min(+radiusY, y - centerY)) * 1.0 / radiusY;
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for(signed x = 0; x < _width; x++) {
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double px = max(-radiusX, min(+radiusX, x - centerX)) * 1.0 / radiusX;
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double mu = max(0.0, min(1.0, callback(px, py)));
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if(mu != mu) mu = 1.0; //NaN
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write(dp, interpolate4f(a, b, mu));
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dp += stride();
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}
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}
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}
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auto image::crossGradient(uint64_t a, uint64_t b, signed radiusX, signed radiusY, signed centerX, signed centerY) -> void {
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return gradient(a, b, radiusX, radiusY, centerX, centerY, [](double x, double y) -> double {
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x = fabs(x), y = fabs(y);
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return min(x, y) * min(x, y);
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});
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}
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auto image::diamondGradient(uint64_t a, uint64_t b, signed radiusX, signed radiusY, signed centerX, signed centerY) -> void {
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return gradient(a, b, radiusX, radiusY, centerX, centerY, [](double x, double y) -> double {
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return fabs(x) + fabs(y);
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});
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}
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auto image::horizontalGradient(uint64_t a, uint64_t b, signed radiusX, signed radiusY, signed centerX, signed centerY) -> void {
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return gradient(a, b, radiusX, radiusY, centerX, centerY, [](double x, double y) -> double {
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return fabs(x);
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});
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}
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auto image::radialGradient(uint64_t a, uint64_t b, signed radiusX, signed radiusY, signed centerX, signed centerY) -> void {
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return gradient(a, b, radiusX, radiusY, centerX, centerY, [](double x, double y) -> double {
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return sqrt(x * x + y * y);
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});
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}
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auto image::sphericalGradient(uint64_t a, uint64_t b, signed radiusX, signed radiusY, signed centerX, signed centerY) -> void {
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return gradient(a, b, radiusX, radiusY, centerX, centerY, [](double x, double y) -> double {
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return x * x + y * y;
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});
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}
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auto image::squareGradient(uint64_t a, uint64_t b, signed radiusX, signed radiusY, signed centerX, signed centerY) -> void {
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return gradient(a, b, radiusX, radiusY, centerX, centerY, [](double x, double y) -> double {
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return max(fabs(x), fabs(y));
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});
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}
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auto image::verticalGradient(uint64_t a, uint64_t b, signed radiusX, signed radiusY, signed centerX, signed centerY) -> void {
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return gradient(a, b, radiusX, radiusY, centerX, centerY, [](double x, double y) -> double {
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return fabs(y);
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});
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}
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}
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