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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 = 4.0f;
vkvg_line_join_t lineJoin = VKVG_LINE_JOIN_MITER;
vkvg_line_cap_t lineCap = VKVG_LINE_CAP_BUTT;
bool isClosed = false, refresh = true;
bool startWithArc = false, endWithArc = false;
int ptsCount = 0;
vec2 pts[1024];
int hoverPt = -1;
double pointSize = 7;
float _dashes[] = {5.0f, 3.0f};
int _ndashes = 2;
void emit_path(VkvgContext ctx) {
vkvg_move_to(ctx, pts[0].x, pts[0].y);
for (int i = 1; i < ptsCount; i++)
vkvg_line_to(ctx, pts[i].x, pts[i].y);
if (isClosed)
vkvg_close_path(ctx);
}
void draw() {
refresh = false;
VkvgContext ctx = vkvg_create(surf);
vkvg_clear(ctx);
vkvg_set_source_rgba(ctx, 1, 0, 0, 1);
vkvg_set_line_width(ctx, lineWidth);
vkvg_set_line_join(ctx, lineJoin);
vkvg_set_line_cap(ctx, lineCap);
emit_path(ctx);
float x1, y1, x2, y2;
vkvg_path_extents(ctx, &x1, &y1, &x2, &y2);
vkvg_set_source_rgba(ctx, 0.2, 0.2, 1, 0.5);
if (hoverPt >= 0) {
if (isClosed)
vkvg_fill_preserve(ctx);
vkvg_set_source_rgba(ctx, 1, 0.2, 0.2, 0.5);
vkvg_stroke_preserve(ctx);
vkvg_set_dash(ctx, NULL, 0, 0);
vkvg_set_line_width(ctx, 1);
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 {
if (isClosed)
vkvg_fill_preserve(ctx);
vkvg_set_source_rgba(ctx, 1, 0.2, 0.2, 0.5);
vkvg_stroke(ctx);
}
vkvg_rectangle(ctx, x1, y1, x2 - x1, y2 - y1);
vkvg_set_dash(ctx, _dashes, _ndashes, 0);
vkvg_set_line_width(ctx, 1);
vkvg_set_source_rgba(ctx, 0, 1, 0, 1);
vkvg_stroke(ctx);
vkvg_destroy(ctx);
}
static void key_callback(GLFWwindow *window, int key, int scancode, int action, int mods) {
if (action != GLFW_PRESS)
return;
switch (key) {
case GLFW_KEY_ESCAPE:
glfwSetWindowShouldClose(window, GLFW_TRUE);
break;
case GLFW_KEY_W:
isClosed ^= true;
break;
case GLFW_KEY_DELETE:
ptsCount = 0;
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_SUBTRACT:
if (ptsCount > 1)
ptsCount--;
break;
}
refresh = true;
}
static vec2 mousePos;
static void mouse_move_callback(GLFWwindow *window, double x, double y) {
mousePos = (vec2){x, y};
if (mouseDown) {
if (hoverPt < 0)
return;
pts[hoverPt] = mousePos;
refresh = true;
} else {
for (int i = 0; i < ptsCount; i++) {
if (x > pts[i].x - pointSize && x < pts[i].x + pointSize && y > pts[i].y - pointSize &&
y < pts[i].y + pointSize) {
hoverPt = i;
refresh = true;
return;
}
}
refresh = true;
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;
if (state == GLFW_TRUE && hoverPt < 0)
pts[ptsCount++] = mousePos;
refresh = true;
}
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();
if (refresh)
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;
}
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