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#include "test.h"
#include "vectors.h"

vkvg_fill_rule_t          fillrule  = VKVG_FILL_RULE_NON_ZERO;
static VkSampleCountFlags samples   = VK_SAMPLE_COUNT_8_BIT;
float                     lineWidth = 10.0f;
vkvg_line_join_t          lineJoin  = VKVG_LINE_JOIN_MITER;
vkvg_line_cap_t           lineCap   = VKVG_LINE_CAP_BUTT;
bool                      isClosed = false, isFilled = false;

int  ptsCount     = 4;
int  initPtsCount = 4;
vec2 pts[]        = {
    {150, 150},
    {500, 340},
    {470, 150},
    {160, 350},
};
/*vec2 pts[] = {
    {150,150},
    {250,150},
    {100,150},
    {150,200},
};*/
int    hoverPt        = -1;
double hoverPointSize = 7, pointSize = 5;

#ifdef VKVG_WIRED_DEBUG
vkvg_wired_debug_mode _wired_debug = vkvg_wired_debug_mode_normal;
#endif

void draw() {

    VkvgContext ctx = vkvg_create(surf);
    vkvg_clear(ctx);

#ifdef VKVG_WIRED_DEBUG
    vkvg_wired_debug = _wired_debug;
#endif

    vkvg_set_line_width(ctx, lineWidth);
    vkvg_set_line_join(ctx, lineJoin);
    vkvg_set_line_cap(ctx, lineCap);

    vkvg_move_to(ctx, pts[0].x, pts[0].y);
    vkvg_curve_to(ctx, pts[1].x, pts[1].y, pts[2].x, pts[2].y, pts[3].x, pts[3].y);

    if (isClosed)
        vkvg_close_path(ctx);

    if (isFilled) {
        vkvg_set_source_rgba(ctx, 0.4, 0.6, 0.4, 1);
        vkvg_fill_preserve(ctx);
    }

    vkvg_set_source_rgba(ctx, 1, 0, 0, 0.3f);

    vkvg_stroke(ctx);
    vkvg_flush(ctx);

#ifdef VKVG_WIRED_DEBUG
    vkvg_wired_debug = vkvg_wired_debug_mode_normal;
#endif

    vkvg_set_line_width(ctx, 1);
    vkvg_set_source_rgba(ctx, 0.5, 0.5, 0.5, 0.6);
    for (int i = 0; i < ptsCount; i++) {

        if (i == hoverPt) {
            vkvg_arc(ctx, pts[i].x, pts[i].y, hoverPointSize, 0, M_PIF * 2);
            vkvg_set_source_rgba(ctx, 0.5, 0.5, 1.0, 0.6);
            vkvg_fill_preserve(ctx);
            vkvg_set_source_rgba(ctx, 0.5, 0.5, 0.5, 0.6);
        } else {
            vkvg_arc(ctx, pts[i].x, pts[i].y, pointSize, 0, M_PIF * 2);
            vkvg_fill_preserve(ctx);
        }
        vkvg_stroke(ctx);
    }

    if (hoverPt >= 0) {
        vkvg_stroke_preserve(ctx);
        vkvg_set_dash(ctx, NULL, 0, 0);
        vkvg_set_line_width(ctx, 2);
        vkvg_set_source_rgba(ctx, 0, 0, 0, 1);
        vkvg_stroke(ctx);
        vkvg_set_source_rgba(ctx, 0.5f, 0.5f, 1.0f, 0.7f);
        vkvg_arc(ctx, pts[hoverPt].x, pts[hoverPt].y, pointSize, 0, M_PIF * 2);
        vkvg_fill_preserve(ctx);
        vkvg_stroke(ctx);
    } else
        vkvg_stroke(ctx);

    // draw_v(ctx, 200, 20, VKVG_LINE_JOIN_BEVEL);
    // draw_v(ctx, 300, 80, VKVG_LINE_JOIN_ROUND);
    vkvg_destroy(ctx);
}
static void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods) {
    if (action == GLFW_RELEASE)
        return;
    switch (key) {
    case GLFW_KEY_ESCAPE:
        glfwSetWindowShouldClose(window, GLFW_TRUE);
        break;
    case GLFW_KEY_W:
        isClosed ^= true;
        break;
    case GLFW_KEY_F:
        isFilled ^= true;
        break;
    case GLFW_KEY_J:
        lineJoin++;
        if (lineJoin > 2)
            lineJoin = 0;
        break;
    case GLFW_KEY_C:
        lineCap++;
        if (lineCap > 2)
            lineCap = 0;
        break;
    case GLFW_KEY_KP_ADD:
        lineWidth++;
        break;
    case GLFW_KEY_KP_SUBTRACT:
        if (lineWidth > 1)
            lineWidth--;
        break;
#ifdef VKVG_WIRED_DEBUG
    case GLFW_KEY_F1:
        _wired_debug ^= (1U << 0);
        break;
    case GLFW_KEY_F2:
        _wired_debug ^= (1U << 1);
        break;
    case GLFW_KEY_F3:
        _wired_debug ^= (1U << 2);
        break;
#endif
    }
}
static void mouse_move_callback(GLFWwindow* window, double x, double y) {
    if (mouseDown) {
        if (hoverPt < 0)
            return;
        pts[hoverPt].x = x;
        pts[hoverPt].y = y;
    } else {
        for (int i = 0; i < ptsCount; i++) {
            if (x > pts[i].x - hoverPointSize && x < pts[i].x + hoverPointSize && y > pts[i].y - hoverPointSize &&
                y < pts[i].y + hoverPointSize) {
                hoverPt = i;
                return;
            }
        }
        hoverPt = -1;
    }
}
static void scroll_callback(GLFWwindow* window, double x, double y) {
    if (y < 0.f)
        zoom *= 0.5f;
    else
        zoom *= 2.0f;
}
static void mouse_button_callback(GLFWwindow* window, int but, int state, int modif) {
    if (but != GLFW_MOUSE_BUTTON_1)
        return;
    if (state == GLFW_TRUE)
        mouseDown = true;
    else
        mouseDown = false;
}

int main(int argc, char* argv[]) {

    _parse_args(argc, argv);
    VkEngine e;
    e = vkengine_create(VK_PHYSICAL_DEVICE_TYPE_DISCRETE_GPU, VK_PRESENT_MODE_FIFO_KHR, test_width, test_height);

    VkhPresenter r = e->renderer;
    vkengine_set_key_callback(e, key_callback);
    vkengine_set_mouse_but_callback(e, mouse_button_callback);
    vkengine_set_cursor_pos_callback(e, mouse_move_callback);
    vkengine_set_scroll_callback(e, scroll_callback);

    vkvg_device_create_info_t info = {samples, false, vkh_app_get_inst(e->app), r->dev->phy, r->dev->dev, r->qFam, 0};
    device                         = vkvg_device_create(&info);

    surf = vkvg_surface_create(device, test_width, test_height);

    vkh_presenter_build_blit_cmd(r, vkvg_surface_get_vk_image(surf), test_width, test_height);

    while (!vkengine_should_close(e)) {
        glfwPollEvents();

        draw();

        if (!vkh_presenter_draw(r)) {
            vkh_presenter_get_size(r, &test_width, &test_height);
            vkvg_surface_destroy(surf);
            surf = vkvg_surface_create(device, test_width, test_height);
            vkh_presenter_build_blit_cmd(r, vkvg_surface_get_vk_image(surf), test_width, test_height);
            vkDeviceWaitIdle(r->dev->dev);
            continue;
        }
    }
    vkDeviceWaitIdle(e->dev->dev);

    vkvg_surface_destroy(surf);

    vkvg_device_destroy(device);

    vkengine_destroy(e);

    return 0;
}