src/shapes/image.cpp

#include "rive/math/hit_test.hpp"
#include "rive/shapes/image.hpp"
#include "rive/backboard.hpp"
#include "rive/importers/backboard_importer.hpp"
#include "rive/assets/file_asset.hpp"
#include "rive/assets/image_asset.hpp"
#include "rive/shapes/mesh.hpp"

using namespace rive;

void Image::draw(Renderer* renderer) {
    if (m_ImageAsset == nullptr || renderOpacity() == 0.0f) {
        return;
    }

    if (!clip(renderer)) {
        // We didn't clip, so make sure to save as we'll be doing some
        // transformations.
        renderer->save();
    }

    auto renderImage = m_ImageAsset->renderImage();
    auto width = renderImage->width();
    auto height = renderImage->height();

    if (m_Mesh != nullptr) {
        m_Mesh->draw(renderer, renderImage, blendMode(), renderOpacity());
    } else {
        renderer->transform(worldTransform());
        renderer->translate(-width / 2.0f, -height / 2.0f);
        renderer->drawImage(renderImage, blendMode(), renderOpacity());
    }

    renderer->restore();
}

Core* Image::hitTest(HitInfo* hinfo, const Mat2D& xform) {
    // TODO: handle clip?

    auto renderImage = m_ImageAsset->renderImage();
    auto width = renderImage->width();
    auto height = renderImage->height();

    if (m_Mesh) {
        printf("Missing mesh\n");
        // TODO: hittest mesh
    } else {
        auto mx = xform * worldTransform() * Mat2D::fromTranslate(-width * 0.5f, -height * 0.5f);
        HitTester tester(hinfo->area);
        tester.addRect(AABB(0, 0, width, height), mx);
        if (tester.test()) {
            return this;
        }
    }
    return nullptr;
}

StatusCode Image::import(ImportStack& importStack) {
    auto backboardImporter = importStack.latest<BackboardImporter>(Backboard::typeKey);
    if (backboardImporter == nullptr) {
        return StatusCode::MissingObject;
    }
    backboardImporter->addFileAssetReferencer(this);

    return Super::import(importStack);
}

void Image::assets(const std::vector<FileAsset*>& assets) {
    if ((size_t)assetId() >= assets.size()) {
        return;
    }
    auto asset = assets[assetId()];
    if (asset->is<ImageAsset>()) {
        m_ImageAsset = asset->as<ImageAsset>();
    }
}

Core* Image::clone() const {
    Image* twin = ImageBase::clone()->as<Image>();
    twin->m_ImageAsset = m_ImageAsset;
    return twin;
}

void Image::setMesh(Mesh* mesh) { m_Mesh = mesh; }
Mesh* Image::mesh() const { return m_Mesh; }