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+/**
+ @file Image3.cpp
+
+ @maintainer Morgan McGuire, http://graphics.cs.williams.edu
+
+ @created 2007-01-31
+ @edited 2007-01-31
+*/
+
+
+#include "G3D/Image3.h"
+#include "G3D/Image3uint8.h"
+#include "G3D/GImage.h"
+#include "G3D/Color4.h"
+#include "G3D/Color4uint8.h"
+#include "G3D/Color1.h"
+#include "G3D/Color1uint8.h"
+#include "G3D/ImageFormat.h"
+
+namespace G3D {
+
+Image3::Image3(int w, int h, WrapMode wrap) : Map2D<Color3, Color3>(w, h, wrap) {
+ setAll(Color3::black());
+}
+
+
+Image3::Ref Image3::fromGImage(const GImage& im, WrapMode wrap) {
+ switch (im.channels()) {
+ case 1:
+ return fromArray(im.pixel1(), im.width(), im.height(), wrap);
+
+ case 3:
+ return fromArray(im.pixel3(), im.width(), im.height(), wrap);
+
+ case 4:
+ return fromArray(im.pixel4(), im.width(), im.height(), wrap);
+
+ default:
+ debugAssertM(false, "Input GImage must have 1, 3, or 4 channels.");
+ return NULL;
+ }
+}
+
+
+Image3::Ref Image3::fromImage3uint8(const ReferenceCountedPointer<Image3uint8>& im) {
+ Ref out = createEmpty(im->wrapMode());
+ out->resize(im->width(), im->height());
+
+ int N = im->width() * im->height();
+ const Color3uint8* src = reinterpret_cast<Color3uint8*>(im->getCArray());
+ for (int i = 0; i < N; ++i) {
+ out->data[i] = Color3(src[i]);
+ }
+
+ return out;
+}
+
+
+Image3::Ref Image3::createEmpty(int width, int height, WrapMode wrap) {
+ return new Image3(width, height, wrap);
+}
+
+
+Image3::Ref Image3::createEmpty(WrapMode wrap) {
+ return createEmpty(0, 0, wrap);
+}
+
+
+Image3::Ref Image3::fromFile(const std::string& filename, WrapMode wrap, GImage::Format fmt) {
+ Ref out = createEmpty(wrap);
+ out->load(filename, fmt);
+ return out;
+}
+
+
+void Image3::load(const std::string& filename, GImage::Format fmt) {
+ copyGImage(GImage(filename, fmt));
+ setChanged(true);
+}
+
+
+Image3::Ref Image3::fromArray(const class Color3uint8* ptr, int w, int h, WrapMode wrap) {
+ Ref out = createEmpty(wrap);
+ out->copyArray(ptr, w, h);
+ return out;
+}
+
+
+Image3::Ref Image3::fromArray(const class Color1* ptr, int w, int h, WrapMode wrap) {
+ Ref out = createEmpty(wrap);
+ out->copyArray(ptr, w, h);
+ return out;
+}
+
+
+Image3::Ref Image3::fromArray(const class Color1uint8* ptr, int w, int h, WrapMode wrap) {
+ Ref out = createEmpty(wrap);
+ out->copyArray(ptr, w, h);
+ return out;
+}
+
+
+Image3::Ref Image3::fromArray(const class Color3* ptr, int w, int h, WrapMode wrap) {
+ Ref out = createEmpty(wrap);
+ out->copyArray(ptr, w, h);
+ return out;
+}
+
+
+Image3::Ref Image3::fromArray(const class Color4uint8* ptr, int w, int h, WrapMode wrap) {
+ Ref out = createEmpty(wrap);
+ out->copyArray(ptr, w, h);
+ return out;
+}
+
+
+Image3::Ref Image3::fromArray(const class Color4* ptr, int w, int h, WrapMode wrap) {
+ Ref out = createEmpty(wrap);
+ out->copyArray(ptr, w, h);
+ return out;
+}
+
+
+void Image3::copyGImage(const GImage& im) {
+ switch (im.channels()) {
+ case 1:
+ copyArray(im.pixel1(), im.width(), im.height());
+ break;
+
+ case 3:
+ copyArray(im.pixel3(), im.width(), im.height());
+ break;
+
+ case 4:
+ copyArray(im.pixel4(), im.width(), im.height());
+ break;
+ }
+}
+
+
+void Image3::copyArray(const Color3uint8* src, int w, int h) {
+ resize(w, h);
+
+ int N = w * h;
+ Color3* dst = data.getCArray();
+ // Convert int8 -> float
+ for (int i = 0; i < N; ++i) {
+ dst[i] = Color3(src[i]);
+ }
+}
+
+
+void Image3::copyArray(const Color4uint8* src, int w, int h) {
+ resize(w, h);
+
+ int N = w * h;
+ Color3* dst = data.getCArray();
+
+ // Strip alpha and convert
+ for (int i = 0; i < N; ++i) {
+ dst[i] = Color3(src[i].rgb());
+ }
+}
+
+
+void Image3::copyArray(const Color3* src, int w, int h) {
+ resize(w, h);
+ System::memcpy(getCArray(), src, w * h * sizeof(Color3));
+}
+
+
+void Image3::copyArray(const Color4* src, int w, int h) {
+ resize(w, h);
+
+ int N = w * h;
+ Color3* dst = data.getCArray();
+
+ // Strip alpha
+ for (int i = 0; i < N; ++i) {
+ dst[i] = src[i].rgb();
+ }
+}
+
+
+void Image3::copyArray(const Color1uint8* src, int w, int h) {
+ resize(w, h);
+ int N = w * h;
+
+ Color3* dst = getCArray();
+ for (int i = 0; i < N; ++i) {
+ dst[i].r = dst[i].g = dst[i].b = Color1(src[i]).value;
+ }
+}
+
+
+void Image3::copyArray(const Color1* src, int w, int h) {
+ resize(w, h);
+ int N = w * h;
+
+ Color3* dst = getCArray();
+ for (int i = 0; i < N; ++i) {
+ dst[i].r = dst[i].g = dst[i].b = src[i].value;
+ }
+}
+
+
+/** Saves in any of the formats supported by G3D::GImage. */
+void Image3::save(const std::string& filename, GImage::Format fmt) {
+ GImage im(width(), height(), 3);
+
+ int N = im.width() * im.height();
+ Color3uint8* dst = im.pixel3();
+ for (int i = 0; i < N; ++i) {
+ dst[i] = Color3uint8(data[i]);
+ }
+
+ im.save(filename, fmt);
+}
+
+
+const ImageFormat* Image3::format() const {
+ return ImageFormat::RGB32F();
+}
+
+} // G3D